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8d83a5d0a2
Avoid explicitly grouping by columns that we know are redundant for sorting, for example we need group by only one of x and y in SELECT ... WHERE x = y GROUP BY x, y This comes up more often than you might think, as shown by the changes in the regression tests. It's nearly free to detect too, since we are just piggybacking on the existing logic that detects redundant pathkeys. (In some of the existing plans that change, it's visible that a sort step preceding the grouping step already didn't bother to sort by the redundant column, making the old plan a bit silly-looking.) To do this, build processed_groupClause and processed_distinctClause lists that omit any provably-redundant sort items, and consult those not the originals where relevant. This means that within the planner, one should usually consult root->processed_groupClause or root->processed_distinctClause if one wants to know which columns are to be grouped on; but to check whether grouping or distinct-ing is happening at all, check non-NIL-ness of parse->groupClause or parse->distinctClause. This is comparable to longstanding rules about handling the HAVING clause, so I don't think it'll be a huge maintenance problem. nodeAgg.c also needs minor mods, because it's now possible to generate AGG_PLAIN and AGG_SORTED Agg nodes with zero grouping columns. Patch by me; thanks to Richard Guo and David Rowley for review. Discussion: https://postgr.es/m/185315.1672179489@sss.pgh.pa.us
5405 lines
125 KiB
Plaintext
5405 lines
125 KiB
Plaintext
CREATE EXTENSION pg_trgm;
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-- Check whether any of our opclasses fail amvalidate
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SELECT amname, opcname
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FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
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WHERE opc.oid >= 16384 AND NOT amvalidate(opc.oid);
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amname | opcname
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--------+---------
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(0 rows)
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--backslash is used in tests below, installcheck will fail if
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--standard_conforming_string is off
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set standard_conforming_strings=on;
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-- reduce noise
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set extra_float_digits = 0;
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select show_trgm('');
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show_trgm
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-----------
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{}
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(1 row)
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select show_trgm('(*&^$@%@');
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show_trgm
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-----------
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{}
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(1 row)
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select show_trgm('a b c');
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show_trgm
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---------------------------------------
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{" a"," b"," c"," a "," b "," c "}
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(1 row)
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select show_trgm(' a b c ');
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show_trgm
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---------------------------------------
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{" a"," b"," c"," a "," b "," c "}
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(1 row)
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select show_trgm('aA bB cC');
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show_trgm
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---------------------------------------------------------
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{" a"," b"," c"," aa"," bb"," cc","aa ","bb ","cc "}
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(1 row)
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select show_trgm(' aA bB cC ');
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show_trgm
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---------------------------------------------------------
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{" a"," b"," c"," aa"," bb"," cc","aa ","bb ","cc "}
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(1 row)
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select show_trgm('a b C0*%^');
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show_trgm
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---------------------------------------------
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{" a"," b"," c"," a "," b "," c0","c0 "}
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(1 row)
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select similarity('wow','WOWa ');
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similarity
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------------
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0.5
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(1 row)
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select similarity('wow',' WOW ');
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similarity
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------------
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1
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(1 row)
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select similarity('---', '####---');
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similarity
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------------
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0
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(1 row)
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CREATE TABLE test_trgm(t text COLLATE "C");
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\copy test_trgm from 'data/trgm.data'
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select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t;
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t | sml
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-------------+----------
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qwertyu0988 | 1
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qwertyu0980 | 0.714286
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qwertyu0981 | 0.714286
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qwertyu0982 | 0.714286
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qwertyu0983 | 0.714286
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qwertyu0984 | 0.714286
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qwertyu0985 | 0.714286
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qwertyu0986 | 0.714286
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qwertyu0987 | 0.714286
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qwertyu0989 | 0.714286
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qwertyu0088 | 0.6
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qwertyu0098 | 0.6
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qwertyu0188 | 0.6
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qwertyu0288 | 0.6
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qwertyu0388 | 0.6
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qwertyu0488 | 0.6
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qwertyu0588 | 0.6
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qwertyu0688 | 0.6
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qwertyu0788 | 0.6
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qwertyu0888 | 0.6
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qwertyu0900 | 0.6
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qwertyu0901 | 0.6
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qwertyu0902 | 0.6
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qwertyu0903 | 0.6
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qwertyu0904 | 0.6
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qwertyu0905 | 0.6
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qwertyu0906 | 0.6
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qwertyu0907 | 0.6
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qwertyu0908 | 0.6
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qwertyu0909 | 0.6
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qwertyu0910 | 0.6
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qwertyu0911 | 0.6
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qwertyu0912 | 0.6
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qwertyu0913 | 0.6
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qwertyu0914 | 0.6
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qwertyu0915 | 0.6
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qwertyu0916 | 0.6
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qwertyu0917 | 0.6
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qwertyu0918 | 0.6
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qwertyu0919 | 0.6
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qwertyu0920 | 0.6
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qwertyu0921 | 0.6
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qwertyu0922 | 0.6
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qwertyu0923 | 0.6
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qwertyu0924 | 0.6
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qwertyu0925 | 0.6
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qwertyu0926 | 0.6
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qwertyu0927 | 0.6
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qwertyu0928 | 0.6
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qwertyu0929 | 0.6
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qwertyu0930 | 0.6
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qwertyu0931 | 0.6
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qwertyu0932 | 0.6
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qwertyu0933 | 0.6
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qwertyu0934 | 0.6
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qwertyu0935 | 0.6
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qwertyu0936 | 0.6
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qwertyu0937 | 0.6
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qwertyu0938 | 0.6
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qwertyu0939 | 0.6
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qwertyu0940 | 0.6
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qwertyu0941 | 0.6
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qwertyu0942 | 0.6
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qwertyu0943 | 0.6
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qwertyu0944 | 0.6
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qwertyu0945 | 0.6
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qwertyu0946 | 0.6
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qwertyu0947 | 0.6
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qwertyu0948 | 0.6
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qwertyu0949 | 0.6
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qwertyu0950 | 0.6
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qwertyu0951 | 0.6
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qwertyu0952 | 0.6
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qwertyu0953 | 0.6
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qwertyu0954 | 0.6
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qwertyu0955 | 0.6
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qwertyu0956 | 0.6
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qwertyu0957 | 0.6
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qwertyu0958 | 0.6
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qwertyu0959 | 0.6
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qwertyu0960 | 0.6
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qwertyu0961 | 0.6
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qwertyu0962 | 0.6
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qwertyu0963 | 0.6
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qwertyu0964 | 0.6
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qwertyu0965 | 0.6
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qwertyu0966 | 0.6
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qwertyu0967 | 0.6
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qwertyu0968 | 0.6
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qwertyu0969 | 0.6
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qwertyu0970 | 0.6
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qwertyu0971 | 0.6
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qwertyu0972 | 0.6
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qwertyu0973 | 0.6
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qwertyu0974 | 0.6
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qwertyu0975 | 0.6
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qwertyu0976 | 0.6
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qwertyu0977 | 0.6
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qwertyu0978 | 0.6
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qwertyu0979 | 0.6
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qwertyu0990 | 0.6
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qwertyu0991 | 0.6
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qwertyu0992 | 0.6
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qwertyu0993 | 0.6
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qwertyu0994 | 0.6
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qwertyu0995 | 0.6
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qwertyu0996 | 0.6
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qwertyu0997 | 0.6
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qwertyu0998 | 0.6
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qwertyu0999 | 0.6
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qwertyu0001 | 0.5
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qwertyu0002 | 0.5
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qwertyu0003 | 0.5
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qwertyu0004 | 0.5
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qwertyu0005 | 0.5
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qwertyu0006 | 0.5
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qwertyu0007 | 0.5
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qwertyu0008 | 0.5
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qwertyu0009 | 0.5
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qwertyu0010 | 0.5
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qwertyu0011 | 0.5
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qwertyu0012 | 0.5
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qwertyu0013 | 0.5
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qwertyu0014 | 0.5
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qwertyu0015 | 0.5
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qwertyu0016 | 0.5
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qwertyu0017 | 0.5
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qwertyu0018 | 0.5
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qwertyu0019 | 0.5
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qwertyu0020 | 0.5
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qwertyu0021 | 0.5
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qwertyu0022 | 0.5
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qwertyu0023 | 0.5
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qwertyu0024 | 0.5
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qwertyu0025 | 0.5
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qwertyu0026 | 0.5
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qwertyu0027 | 0.5
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qwertyu0028 | 0.5
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qwertyu0029 | 0.5
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qwertyu0030 | 0.5
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qwertyu0031 | 0.5
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qwertyu0032 | 0.5
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qwertyu0033 | 0.5
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qwertyu0034 | 0.5
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qwertyu0035 | 0.5
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qwertyu0036 | 0.5
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qwertyu0037 | 0.5
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qwertyu0038 | 0.5
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qwertyu0039 | 0.5
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qwertyu0040 | 0.5
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qwertyu0041 | 0.5
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qwertyu0042 | 0.5
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qwertyu0043 | 0.5
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qwertyu0044 | 0.5
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qwertyu0045 | 0.5
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qwertyu0046 | 0.5
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qwertyu0047 | 0.5
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qwertyu0048 | 0.5
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qwertyu0049 | 0.5
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qwertyu0050 | 0.5
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qwertyu0051 | 0.5
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qwertyu0052 | 0.5
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qwertyu0053 | 0.5
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qwertyu0054 | 0.5
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qwertyu0055 | 0.5
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qwertyu0056 | 0.5
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qwertyu0057 | 0.5
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qwertyu0058 | 0.5
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qwertyu0059 | 0.5
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qwertyu0060 | 0.5
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qwertyu0061 | 0.5
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qwertyu0062 | 0.5
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qwertyu0063 | 0.5
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qwertyu0064 | 0.5
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qwertyu0065 | 0.5
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qwertyu0066 | 0.5
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qwertyu0067 | 0.5
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qwertyu0068 | 0.5
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qwertyu0069 | 0.5
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qwertyu0070 | 0.5
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qwertyu0071 | 0.5
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qwertyu0072 | 0.5
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qwertyu0073 | 0.5
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qwertyu0074 | 0.5
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qwertyu0075 | 0.5
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qwertyu0076 | 0.5
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qwertyu0077 | 0.5
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qwertyu0078 | 0.5
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qwertyu0079 | 0.5
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qwertyu0080 | 0.5
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qwertyu0081 | 0.5
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qwertyu0082 | 0.5
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qwertyu0083 | 0.5
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qwertyu0084 | 0.5
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qwertyu0085 | 0.5
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qwertyu0086 | 0.5
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qwertyu0087 | 0.5
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qwertyu0089 | 0.5
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qwertyu0090 | 0.5
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qwertyu0091 | 0.5
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qwertyu0092 | 0.5
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qwertyu0093 | 0.5
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qwertyu0094 | 0.5
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qwertyu0095 | 0.5
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qwertyu0096 | 0.5
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qwertyu0097 | 0.5
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qwertyu0099 | 0.5
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qwertyu0100 | 0.5
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qwertyu0101 | 0.5
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qwertyu0102 | 0.5
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qwertyu0103 | 0.5
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qwertyu0104 | 0.5
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qwertyu0105 | 0.5
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qwertyu0106 | 0.5
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qwertyu0107 | 0.5
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qwertyu0108 | 0.5
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qwertyu0109 | 0.5
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qwertyu0110 | 0.5
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qwertyu0111 | 0.5
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qwertyu0112 | 0.5
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qwertyu0113 | 0.5
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qwertyu0114 | 0.5
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qwertyu0115 | 0.5
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qwertyu0116 | 0.5
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qwertyu0117 | 0.5
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qwertyu0118 | 0.5
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qwertyu0119 | 0.5
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qwertyu0120 | 0.5
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qwertyu0121 | 0.5
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qwertyu0122 | 0.5
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qwertyu0123 | 0.5
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qwertyu0124 | 0.5
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qwertyu0125 | 0.5
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qwertyu0126 | 0.5
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qwertyu0127 | 0.5
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qwertyu0128 | 0.5
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qwertyu0129 | 0.5
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qwertyu0130 | 0.5
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qwertyu0131 | 0.5
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qwertyu0132 | 0.5
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qwertyu0133 | 0.5
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qwertyu0134 | 0.5
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qwertyu0135 | 0.5
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qwertyu0136 | 0.5
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qwertyu0137 | 0.5
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qwertyu0138 | 0.5
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qwertyu0139 | 0.5
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qwertyu0140 | 0.5
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qwertyu0141 | 0.5
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qwertyu0142 | 0.5
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qwertyu0143 | 0.5
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qwertyu0144 | 0.5
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qwertyu0145 | 0.5
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qwertyu0146 | 0.5
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qwertyu0147 | 0.5
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qwertyu0148 | 0.5
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qwertyu0149 | 0.5
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qwertyu0150 | 0.5
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qwertyu0151 | 0.5
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qwertyu0152 | 0.5
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qwertyu0153 | 0.5
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qwertyu0154 | 0.5
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qwertyu0155 | 0.5
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qwertyu0156 | 0.5
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qwertyu0157 | 0.5
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qwertyu0158 | 0.5
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qwertyu0159 | 0.5
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qwertyu0160 | 0.5
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qwertyu0161 | 0.5
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qwertyu0162 | 0.5
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qwertyu0163 | 0.5
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qwertyu0164 | 0.5
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qwertyu0165 | 0.5
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qwertyu0166 | 0.5
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qwertyu0167 | 0.5
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qwertyu0168 | 0.5
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qwertyu0169 | 0.5
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qwertyu0170 | 0.5
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qwertyu0171 | 0.5
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qwertyu0172 | 0.5
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qwertyu0173 | 0.5
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qwertyu0174 | 0.5
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qwertyu0175 | 0.5
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qwertyu0176 | 0.5
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qwertyu0177 | 0.5
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qwertyu0178 | 0.5
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qwertyu0179 | 0.5
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qwertyu0180 | 0.5
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qwertyu0181 | 0.5
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qwertyu0182 | 0.5
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qwertyu0183 | 0.5
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qwertyu0184 | 0.5
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qwertyu0185 | 0.5
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qwertyu0186 | 0.5
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qwertyu0187 | 0.5
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qwertyu0189 | 0.5
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qwertyu0190 | 0.5
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qwertyu0191 | 0.5
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qwertyu0192 | 0.5
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qwertyu0193 | 0.5
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qwertyu0194 | 0.5
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qwertyu0195 | 0.5
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qwertyu0196 | 0.5
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qwertyu0197 | 0.5
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qwertyu0198 | 0.5
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qwertyu0199 | 0.5
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qwertyu0200 | 0.5
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qwertyu0201 | 0.5
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qwertyu0202 | 0.5
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qwertyu0203 | 0.5
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qwertyu0204 | 0.5
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qwertyu0205 | 0.5
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qwertyu0206 | 0.5
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qwertyu0207 | 0.5
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qwertyu0208 | 0.5
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qwertyu0209 | 0.5
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qwertyu0210 | 0.5
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qwertyu0211 | 0.5
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qwertyu0212 | 0.5
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qwertyu0213 | 0.5
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qwertyu0214 | 0.5
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qwertyu0215 | 0.5
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qwertyu0216 | 0.5
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qwertyu0217 | 0.5
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qwertyu0218 | 0.5
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qwertyu0219 | 0.5
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qwertyu0220 | 0.5
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qwertyu0221 | 0.5
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qwertyu0222 | 0.5
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qwertyu0223 | 0.5
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qwertyu0224 | 0.5
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qwertyu0225 | 0.5
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qwertyu0226 | 0.5
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qwertyu0227 | 0.5
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qwertyu0228 | 0.5
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qwertyu0229 | 0.5
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qwertyu0230 | 0.5
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qwertyu0231 | 0.5
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qwertyu0232 | 0.5
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qwertyu0233 | 0.5
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qwertyu0234 | 0.5
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qwertyu0235 | 0.5
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qwertyu0236 | 0.5
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qwertyu0237 | 0.5
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qwertyu0238 | 0.5
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qwertyu0239 | 0.5
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qwertyu0240 | 0.5
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qwertyu0241 | 0.5
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qwertyu0242 | 0.5
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qwertyu0243 | 0.5
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qwertyu0244 | 0.5
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qwertyu0245 | 0.5
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qwertyu0246 | 0.5
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qwertyu0247 | 0.5
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qwertyu0248 | 0.5
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qwertyu0249 | 0.5
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qwertyu0250 | 0.5
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qwertyu0251 | 0.5
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qwertyu0252 | 0.5
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qwertyu0253 | 0.5
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qwertyu0254 | 0.5
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qwertyu0255 | 0.5
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qwertyu0256 | 0.5
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qwertyu0257 | 0.5
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qwertyu0258 | 0.5
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qwertyu0259 | 0.5
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qwertyu0260 | 0.5
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qwertyu0261 | 0.5
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qwertyu0262 | 0.5
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qwertyu0263 | 0.5
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qwertyu0264 | 0.5
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qwertyu0265 | 0.5
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|
qwertyu0725 | 0.5
|
|
qwertyu0726 | 0.5
|
|
qwertyu0727 | 0.5
|
|
qwertyu0728 | 0.5
|
|
qwertyu0729 | 0.5
|
|
qwertyu0730 | 0.5
|
|
qwertyu0731 | 0.5
|
|
qwertyu0732 | 0.5
|
|
qwertyu0733 | 0.5
|
|
qwertyu0734 | 0.5
|
|
qwertyu0735 | 0.5
|
|
qwertyu0736 | 0.5
|
|
qwertyu0737 | 0.5
|
|
qwertyu0738 | 0.5
|
|
qwertyu0739 | 0.5
|
|
qwertyu0740 | 0.5
|
|
qwertyu0741 | 0.5
|
|
qwertyu0742 | 0.5
|
|
qwertyu0743 | 0.5
|
|
qwertyu0744 | 0.5
|
|
qwertyu0745 | 0.5
|
|
qwertyu0746 | 0.5
|
|
qwertyu0747 | 0.5
|
|
qwertyu0748 | 0.5
|
|
qwertyu0749 | 0.5
|
|
qwertyu0750 | 0.5
|
|
qwertyu0751 | 0.5
|
|
qwertyu0752 | 0.5
|
|
qwertyu0753 | 0.5
|
|
qwertyu0754 | 0.5
|
|
qwertyu0755 | 0.5
|
|
qwertyu0756 | 0.5
|
|
qwertyu0757 | 0.5
|
|
qwertyu0758 | 0.5
|
|
qwertyu0759 | 0.5
|
|
qwertyu0760 | 0.5
|
|
qwertyu0761 | 0.5
|
|
qwertyu0762 | 0.5
|
|
qwertyu0763 | 0.5
|
|
qwertyu0764 | 0.5
|
|
qwertyu0765 | 0.5
|
|
qwertyu0766 | 0.5
|
|
qwertyu0767 | 0.5
|
|
qwertyu0768 | 0.5
|
|
qwertyu0769 | 0.5
|
|
qwertyu0770 | 0.5
|
|
qwertyu0771 | 0.5
|
|
qwertyu0772 | 0.5
|
|
qwertyu0773 | 0.5
|
|
qwertyu0774 | 0.5
|
|
qwertyu0775 | 0.5
|
|
qwertyu0776 | 0.5
|
|
qwertyu0777 | 0.5
|
|
qwertyu0778 | 0.5
|
|
qwertyu0779 | 0.5
|
|
qwertyu0780 | 0.5
|
|
qwertyu0781 | 0.5
|
|
qwertyu0782 | 0.5
|
|
qwertyu0783 | 0.5
|
|
qwertyu0784 | 0.5
|
|
qwertyu0785 | 0.5
|
|
qwertyu0786 | 0.5
|
|
qwertyu0787 | 0.5
|
|
qwertyu0789 | 0.5
|
|
qwertyu0790 | 0.5
|
|
qwertyu0791 | 0.5
|
|
qwertyu0792 | 0.5
|
|
qwertyu0793 | 0.5
|
|
qwertyu0794 | 0.5
|
|
qwertyu0795 | 0.5
|
|
qwertyu0796 | 0.5
|
|
qwertyu0797 | 0.5
|
|
qwertyu0798 | 0.5
|
|
qwertyu0799 | 0.5
|
|
qwertyu0800 | 0.5
|
|
qwertyu0801 | 0.5
|
|
qwertyu0802 | 0.5
|
|
qwertyu0803 | 0.5
|
|
qwertyu0804 | 0.5
|
|
qwertyu0805 | 0.5
|
|
qwertyu0806 | 0.5
|
|
qwertyu0807 | 0.5
|
|
qwertyu0808 | 0.5
|
|
qwertyu0809 | 0.5
|
|
qwertyu0810 | 0.5
|
|
qwertyu0811 | 0.5
|
|
qwertyu0812 | 0.5
|
|
qwertyu0813 | 0.5
|
|
qwertyu0814 | 0.5
|
|
qwertyu0815 | 0.5
|
|
qwertyu0816 | 0.5
|
|
qwertyu0817 | 0.5
|
|
qwertyu0818 | 0.5
|
|
qwertyu0819 | 0.5
|
|
qwertyu0820 | 0.5
|
|
qwertyu0821 | 0.5
|
|
qwertyu0822 | 0.5
|
|
qwertyu0823 | 0.5
|
|
qwertyu0824 | 0.5
|
|
qwertyu0825 | 0.5
|
|
qwertyu0826 | 0.5
|
|
qwertyu0827 | 0.5
|
|
qwertyu0828 | 0.5
|
|
qwertyu0829 | 0.5
|
|
qwertyu0830 | 0.5
|
|
qwertyu0831 | 0.5
|
|
qwertyu0832 | 0.5
|
|
qwertyu0833 | 0.5
|
|
qwertyu0834 | 0.5
|
|
qwertyu0835 | 0.5
|
|
qwertyu0836 | 0.5
|
|
qwertyu0837 | 0.5
|
|
qwertyu0838 | 0.5
|
|
qwertyu0839 | 0.5
|
|
qwertyu0840 | 0.5
|
|
qwertyu0841 | 0.5
|
|
qwertyu0842 | 0.5
|
|
qwertyu0843 | 0.5
|
|
qwertyu0844 | 0.5
|
|
qwertyu0845 | 0.5
|
|
qwertyu0846 | 0.5
|
|
qwertyu0847 | 0.5
|
|
qwertyu0848 | 0.5
|
|
qwertyu0849 | 0.5
|
|
qwertyu0850 | 0.5
|
|
qwertyu0851 | 0.5
|
|
qwertyu0852 | 0.5
|
|
qwertyu0853 | 0.5
|
|
qwertyu0854 | 0.5
|
|
qwertyu0855 | 0.5
|
|
qwertyu0856 | 0.5
|
|
qwertyu0857 | 0.5
|
|
qwertyu0858 | 0.5
|
|
qwertyu0859 | 0.5
|
|
qwertyu0860 | 0.5
|
|
qwertyu0861 | 0.5
|
|
qwertyu0862 | 0.5
|
|
qwertyu0863 | 0.5
|
|
qwertyu0864 | 0.5
|
|
qwertyu0865 | 0.5
|
|
qwertyu0866 | 0.5
|
|
qwertyu0867 | 0.5
|
|
qwertyu0868 | 0.5
|
|
qwertyu0869 | 0.5
|
|
qwertyu0870 | 0.5
|
|
qwertyu0871 | 0.5
|
|
qwertyu0872 | 0.5
|
|
qwertyu0873 | 0.5
|
|
qwertyu0874 | 0.5
|
|
qwertyu0875 | 0.5
|
|
qwertyu0876 | 0.5
|
|
qwertyu0877 | 0.5
|
|
qwertyu0878 | 0.5
|
|
qwertyu0879 | 0.5
|
|
qwertyu0880 | 0.5
|
|
qwertyu0881 | 0.5
|
|
qwertyu0882 | 0.5
|
|
qwertyu0883 | 0.5
|
|
qwertyu0884 | 0.5
|
|
qwertyu0885 | 0.5
|
|
qwertyu0886 | 0.5
|
|
qwertyu0887 | 0.5
|
|
qwertyu0889 | 0.5
|
|
qwertyu0890 | 0.5
|
|
qwertyu0891 | 0.5
|
|
qwertyu0892 | 0.5
|
|
qwertyu0893 | 0.5
|
|
qwertyu0894 | 0.5
|
|
qwertyu0895 | 0.5
|
|
qwertyu0896 | 0.5
|
|
qwertyu0897 | 0.5
|
|
qwertyu0898 | 0.5
|
|
qwertyu0899 | 0.5
|
|
qwertyu1000 | 0.411765
|
|
(1000 rows)
|
|
|
|
select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.6
|
|
qwertyu0980 | 0.411765
|
|
qwertyu0981 | 0.411765
|
|
qwertyu0982 | 0.411765
|
|
qwertyu0983 | 0.411765
|
|
qwertyu0984 | 0.411765
|
|
qwertyu0985 | 0.411765
|
|
qwertyu0986 | 0.411765
|
|
qwertyu0987 | 0.411765
|
|
qwertyu0989 | 0.411765
|
|
qwertyu0088 | 0.333333
|
|
qwertyu0098 | 0.333333
|
|
qwertyu0188 | 0.333333
|
|
qwertyu0288 | 0.333333
|
|
qwertyu0388 | 0.333333
|
|
qwertyu0488 | 0.333333
|
|
qwertyu0588 | 0.333333
|
|
qwertyu0688 | 0.333333
|
|
qwertyu0788 | 0.333333
|
|
qwertyu0888 | 0.333333
|
|
qwertyu0900 | 0.333333
|
|
qwertyu0901 | 0.333333
|
|
qwertyu0902 | 0.333333
|
|
qwertyu0903 | 0.333333
|
|
qwertyu0904 | 0.333333
|
|
qwertyu0905 | 0.333333
|
|
qwertyu0906 | 0.333333
|
|
qwertyu0907 | 0.333333
|
|
qwertyu0908 | 0.333333
|
|
qwertyu0909 | 0.333333
|
|
qwertyu0910 | 0.333333
|
|
qwertyu0911 | 0.333333
|
|
qwertyu0912 | 0.333333
|
|
qwertyu0913 | 0.333333
|
|
qwertyu0914 | 0.333333
|
|
qwertyu0915 | 0.333333
|
|
qwertyu0916 | 0.333333
|
|
qwertyu0917 | 0.333333
|
|
qwertyu0918 | 0.333333
|
|
qwertyu0919 | 0.333333
|
|
qwertyu0920 | 0.333333
|
|
qwertyu0921 | 0.333333
|
|
qwertyu0922 | 0.333333
|
|
qwertyu0923 | 0.333333
|
|
qwertyu0924 | 0.333333
|
|
qwertyu0925 | 0.333333
|
|
qwertyu0926 | 0.333333
|
|
qwertyu0927 | 0.333333
|
|
qwertyu0928 | 0.333333
|
|
qwertyu0929 | 0.333333
|
|
qwertyu0930 | 0.333333
|
|
qwertyu0931 | 0.333333
|
|
qwertyu0932 | 0.333333
|
|
qwertyu0933 | 0.333333
|
|
qwertyu0934 | 0.333333
|
|
qwertyu0935 | 0.333333
|
|
qwertyu0936 | 0.333333
|
|
qwertyu0937 | 0.333333
|
|
qwertyu0938 | 0.333333
|
|
qwertyu0939 | 0.333333
|
|
qwertyu0940 | 0.333333
|
|
qwertyu0941 | 0.333333
|
|
qwertyu0942 | 0.333333
|
|
qwertyu0943 | 0.333333
|
|
qwertyu0944 | 0.333333
|
|
qwertyu0945 | 0.333333
|
|
qwertyu0946 | 0.333333
|
|
qwertyu0947 | 0.333333
|
|
qwertyu0948 | 0.333333
|
|
qwertyu0949 | 0.333333
|
|
qwertyu0950 | 0.333333
|
|
qwertyu0951 | 0.333333
|
|
qwertyu0952 | 0.333333
|
|
qwertyu0953 | 0.333333
|
|
qwertyu0954 | 0.333333
|
|
qwertyu0955 | 0.333333
|
|
qwertyu0956 | 0.333333
|
|
qwertyu0957 | 0.333333
|
|
qwertyu0958 | 0.333333
|
|
qwertyu0959 | 0.333333
|
|
qwertyu0960 | 0.333333
|
|
qwertyu0961 | 0.333333
|
|
qwertyu0962 | 0.333333
|
|
qwertyu0963 | 0.333333
|
|
qwertyu0964 | 0.333333
|
|
qwertyu0965 | 0.333333
|
|
qwertyu0966 | 0.333333
|
|
qwertyu0967 | 0.333333
|
|
qwertyu0968 | 0.333333
|
|
qwertyu0969 | 0.333333
|
|
qwertyu0970 | 0.333333
|
|
qwertyu0971 | 0.333333
|
|
qwertyu0972 | 0.333333
|
|
qwertyu0973 | 0.333333
|
|
qwertyu0974 | 0.333333
|
|
qwertyu0975 | 0.333333
|
|
qwertyu0976 | 0.333333
|
|
qwertyu0977 | 0.333333
|
|
qwertyu0978 | 0.333333
|
|
qwertyu0979 | 0.333333
|
|
qwertyu0990 | 0.333333
|
|
qwertyu0991 | 0.333333
|
|
qwertyu0992 | 0.333333
|
|
qwertyu0993 | 0.333333
|
|
qwertyu0994 | 0.333333
|
|
qwertyu0995 | 0.333333
|
|
qwertyu0996 | 0.333333
|
|
qwertyu0997 | 0.333333
|
|
qwertyu0998 | 0.333333
|
|
qwertyu0999 | 0.333333
|
|
(110 rows)
|
|
|
|
select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.333333
|
|
(1 row)
|
|
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
?column? | t
|
|
----------+-------------
|
|
0.411765 | qwertyu0988
|
|
0.5 | qwertyu0987
|
|
(2 rows)
|
|
|
|
select count(*) from test_trgm where t ~ '[qwerty]{2}-?[qwerty]{2}';
|
|
count
|
|
-------
|
|
1000
|
|
(1 row)
|
|
|
|
create index trgm_idx on test_trgm using gist (t gist_trgm_ops);
|
|
set enable_seqscan=off;
|
|
select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 1
|
|
qwertyu0980 | 0.714286
|
|
qwertyu0981 | 0.714286
|
|
qwertyu0982 | 0.714286
|
|
qwertyu0983 | 0.714286
|
|
qwertyu0984 | 0.714286
|
|
qwertyu0985 | 0.714286
|
|
qwertyu0986 | 0.714286
|
|
qwertyu0987 | 0.714286
|
|
qwertyu0989 | 0.714286
|
|
qwertyu0088 | 0.6
|
|
qwertyu0098 | 0.6
|
|
qwertyu0188 | 0.6
|
|
qwertyu0288 | 0.6
|
|
qwertyu0388 | 0.6
|
|
qwertyu0488 | 0.6
|
|
qwertyu0588 | 0.6
|
|
qwertyu0688 | 0.6
|
|
qwertyu0788 | 0.6
|
|
qwertyu0888 | 0.6
|
|
qwertyu0900 | 0.6
|
|
qwertyu0901 | 0.6
|
|
qwertyu0902 | 0.6
|
|
qwertyu0903 | 0.6
|
|
qwertyu0904 | 0.6
|
|
qwertyu0905 | 0.6
|
|
qwertyu0906 | 0.6
|
|
qwertyu0907 | 0.6
|
|
qwertyu0908 | 0.6
|
|
qwertyu0909 | 0.6
|
|
qwertyu0910 | 0.6
|
|
qwertyu0911 | 0.6
|
|
qwertyu0912 | 0.6
|
|
qwertyu0913 | 0.6
|
|
qwertyu0914 | 0.6
|
|
qwertyu0915 | 0.6
|
|
qwertyu0916 | 0.6
|
|
qwertyu0917 | 0.6
|
|
qwertyu0918 | 0.6
|
|
qwertyu0919 | 0.6
|
|
qwertyu0920 | 0.6
|
|
qwertyu0921 | 0.6
|
|
qwertyu0922 | 0.6
|
|
qwertyu0923 | 0.6
|
|
qwertyu0924 | 0.6
|
|
qwertyu0925 | 0.6
|
|
qwertyu0926 | 0.6
|
|
qwertyu0927 | 0.6
|
|
qwertyu0928 | 0.6
|
|
qwertyu0929 | 0.6
|
|
qwertyu0930 | 0.6
|
|
qwertyu0931 | 0.6
|
|
qwertyu0932 | 0.6
|
|
qwertyu0933 | 0.6
|
|
qwertyu0934 | 0.6
|
|
qwertyu0935 | 0.6
|
|
qwertyu0936 | 0.6
|
|
qwertyu0937 | 0.6
|
|
qwertyu0938 | 0.6
|
|
qwertyu0939 | 0.6
|
|
qwertyu0940 | 0.6
|
|
qwertyu0941 | 0.6
|
|
qwertyu0942 | 0.6
|
|
qwertyu0943 | 0.6
|
|
qwertyu0944 | 0.6
|
|
qwertyu0945 | 0.6
|
|
qwertyu0946 | 0.6
|
|
qwertyu0947 | 0.6
|
|
qwertyu0948 | 0.6
|
|
qwertyu0949 | 0.6
|
|
qwertyu0950 | 0.6
|
|
qwertyu0951 | 0.6
|
|
qwertyu0952 | 0.6
|
|
qwertyu0953 | 0.6
|
|
qwertyu0954 | 0.6
|
|
qwertyu0955 | 0.6
|
|
qwertyu0956 | 0.6
|
|
qwertyu0957 | 0.6
|
|
qwertyu0958 | 0.6
|
|
qwertyu0959 | 0.6
|
|
qwertyu0960 | 0.6
|
|
qwertyu0961 | 0.6
|
|
qwertyu0962 | 0.6
|
|
qwertyu0963 | 0.6
|
|
qwertyu0964 | 0.6
|
|
qwertyu0965 | 0.6
|
|
qwertyu0966 | 0.6
|
|
qwertyu0967 | 0.6
|
|
qwertyu0968 | 0.6
|
|
qwertyu0969 | 0.6
|
|
qwertyu0970 | 0.6
|
|
qwertyu0971 | 0.6
|
|
qwertyu0972 | 0.6
|
|
qwertyu0973 | 0.6
|
|
qwertyu0974 | 0.6
|
|
qwertyu0975 | 0.6
|
|
qwertyu0976 | 0.6
|
|
qwertyu0977 | 0.6
|
|
qwertyu0978 | 0.6
|
|
qwertyu0979 | 0.6
|
|
qwertyu0990 | 0.6
|
|
qwertyu0991 | 0.6
|
|
qwertyu0992 | 0.6
|
|
qwertyu0993 | 0.6
|
|
qwertyu0994 | 0.6
|
|
qwertyu0995 | 0.6
|
|
qwertyu0996 | 0.6
|
|
qwertyu0997 | 0.6
|
|
qwertyu0998 | 0.6
|
|
qwertyu0999 | 0.6
|
|
qwertyu0001 | 0.5
|
|
qwertyu0002 | 0.5
|
|
qwertyu0003 | 0.5
|
|
qwertyu0004 | 0.5
|
|
qwertyu0005 | 0.5
|
|
qwertyu0006 | 0.5
|
|
qwertyu0007 | 0.5
|
|
qwertyu0008 | 0.5
|
|
qwertyu0009 | 0.5
|
|
qwertyu0010 | 0.5
|
|
qwertyu0011 | 0.5
|
|
qwertyu0012 | 0.5
|
|
qwertyu0013 | 0.5
|
|
qwertyu0014 | 0.5
|
|
qwertyu0015 | 0.5
|
|
qwertyu0016 | 0.5
|
|
qwertyu0017 | 0.5
|
|
qwertyu0018 | 0.5
|
|
qwertyu0019 | 0.5
|
|
qwertyu0020 | 0.5
|
|
qwertyu0021 | 0.5
|
|
qwertyu0022 | 0.5
|
|
qwertyu0023 | 0.5
|
|
qwertyu0024 | 0.5
|
|
qwertyu0025 | 0.5
|
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qwertyu0486 | 0.5
|
|
qwertyu0487 | 0.5
|
|
qwertyu0489 | 0.5
|
|
qwertyu0490 | 0.5
|
|
qwertyu0491 | 0.5
|
|
qwertyu0492 | 0.5
|
|
qwertyu0493 | 0.5
|
|
qwertyu0494 | 0.5
|
|
qwertyu0495 | 0.5
|
|
qwertyu0496 | 0.5
|
|
qwertyu0497 | 0.5
|
|
qwertyu0498 | 0.5
|
|
qwertyu0499 | 0.5
|
|
qwertyu0500 | 0.5
|
|
qwertyu0501 | 0.5
|
|
qwertyu0502 | 0.5
|
|
qwertyu0503 | 0.5
|
|
qwertyu0504 | 0.5
|
|
qwertyu0505 | 0.5
|
|
qwertyu0506 | 0.5
|
|
qwertyu0507 | 0.5
|
|
qwertyu0508 | 0.5
|
|
qwertyu0509 | 0.5
|
|
qwertyu0510 | 0.5
|
|
qwertyu0511 | 0.5
|
|
qwertyu0512 | 0.5
|
|
qwertyu0513 | 0.5
|
|
qwertyu0514 | 0.5
|
|
qwertyu0515 | 0.5
|
|
qwertyu0516 | 0.5
|
|
qwertyu0517 | 0.5
|
|
qwertyu0518 | 0.5
|
|
qwertyu0519 | 0.5
|
|
qwertyu0520 | 0.5
|
|
qwertyu0521 | 0.5
|
|
qwertyu0522 | 0.5
|
|
qwertyu0523 | 0.5
|
|
qwertyu0524 | 0.5
|
|
qwertyu0525 | 0.5
|
|
qwertyu0526 | 0.5
|
|
qwertyu0527 | 0.5
|
|
qwertyu0528 | 0.5
|
|
qwertyu0529 | 0.5
|
|
qwertyu0530 | 0.5
|
|
qwertyu0531 | 0.5
|
|
qwertyu0532 | 0.5
|
|
qwertyu0533 | 0.5
|
|
qwertyu0534 | 0.5
|
|
qwertyu0535 | 0.5
|
|
qwertyu0536 | 0.5
|
|
qwertyu0537 | 0.5
|
|
qwertyu0538 | 0.5
|
|
qwertyu0539 | 0.5
|
|
qwertyu0540 | 0.5
|
|
qwertyu0541 | 0.5
|
|
qwertyu0542 | 0.5
|
|
qwertyu0543 | 0.5
|
|
qwertyu0544 | 0.5
|
|
qwertyu0545 | 0.5
|
|
qwertyu0546 | 0.5
|
|
qwertyu0547 | 0.5
|
|
qwertyu0548 | 0.5
|
|
qwertyu0549 | 0.5
|
|
qwertyu0550 | 0.5
|
|
qwertyu0551 | 0.5
|
|
qwertyu0552 | 0.5
|
|
qwertyu0553 | 0.5
|
|
qwertyu0554 | 0.5
|
|
qwertyu0555 | 0.5
|
|
qwertyu0556 | 0.5
|
|
qwertyu0557 | 0.5
|
|
qwertyu0558 | 0.5
|
|
qwertyu0559 | 0.5
|
|
qwertyu0560 | 0.5
|
|
qwertyu0561 | 0.5
|
|
qwertyu0562 | 0.5
|
|
qwertyu0563 | 0.5
|
|
qwertyu0564 | 0.5
|
|
qwertyu0565 | 0.5
|
|
qwertyu0566 | 0.5
|
|
qwertyu0567 | 0.5
|
|
qwertyu0568 | 0.5
|
|
qwertyu0569 | 0.5
|
|
qwertyu0570 | 0.5
|
|
qwertyu0571 | 0.5
|
|
qwertyu0572 | 0.5
|
|
qwertyu0573 | 0.5
|
|
qwertyu0574 | 0.5
|
|
qwertyu0575 | 0.5
|
|
qwertyu0576 | 0.5
|
|
qwertyu0577 | 0.5
|
|
qwertyu0578 | 0.5
|
|
qwertyu0579 | 0.5
|
|
qwertyu0580 | 0.5
|
|
qwertyu0581 | 0.5
|
|
qwertyu0582 | 0.5
|
|
qwertyu0583 | 0.5
|
|
qwertyu0584 | 0.5
|
|
qwertyu0585 | 0.5
|
|
qwertyu0586 | 0.5
|
|
qwertyu0587 | 0.5
|
|
qwertyu0589 | 0.5
|
|
qwertyu0590 | 0.5
|
|
qwertyu0591 | 0.5
|
|
qwertyu0592 | 0.5
|
|
qwertyu0593 | 0.5
|
|
qwertyu0594 | 0.5
|
|
qwertyu0595 | 0.5
|
|
qwertyu0596 | 0.5
|
|
qwertyu0597 | 0.5
|
|
qwertyu0598 | 0.5
|
|
qwertyu0599 | 0.5
|
|
qwertyu0600 | 0.5
|
|
qwertyu0601 | 0.5
|
|
qwertyu0602 | 0.5
|
|
qwertyu0603 | 0.5
|
|
qwertyu0604 | 0.5
|
|
qwertyu0605 | 0.5
|
|
qwertyu0606 | 0.5
|
|
qwertyu0607 | 0.5
|
|
qwertyu0608 | 0.5
|
|
qwertyu0609 | 0.5
|
|
qwertyu0610 | 0.5
|
|
qwertyu0611 | 0.5
|
|
qwertyu0612 | 0.5
|
|
qwertyu0613 | 0.5
|
|
qwertyu0614 | 0.5
|
|
qwertyu0615 | 0.5
|
|
qwertyu0616 | 0.5
|
|
qwertyu0617 | 0.5
|
|
qwertyu0618 | 0.5
|
|
qwertyu0619 | 0.5
|
|
qwertyu0620 | 0.5
|
|
qwertyu0621 | 0.5
|
|
qwertyu0622 | 0.5
|
|
qwertyu0623 | 0.5
|
|
qwertyu0624 | 0.5
|
|
qwertyu0625 | 0.5
|
|
qwertyu0626 | 0.5
|
|
qwertyu0627 | 0.5
|
|
qwertyu0628 | 0.5
|
|
qwertyu0629 | 0.5
|
|
qwertyu0630 | 0.5
|
|
qwertyu0631 | 0.5
|
|
qwertyu0632 | 0.5
|
|
qwertyu0633 | 0.5
|
|
qwertyu0634 | 0.5
|
|
qwertyu0635 | 0.5
|
|
qwertyu0636 | 0.5
|
|
qwertyu0637 | 0.5
|
|
qwertyu0638 | 0.5
|
|
qwertyu0639 | 0.5
|
|
qwertyu0640 | 0.5
|
|
qwertyu0641 | 0.5
|
|
qwertyu0642 | 0.5
|
|
qwertyu0643 | 0.5
|
|
qwertyu0644 | 0.5
|
|
qwertyu0645 | 0.5
|
|
qwertyu0646 | 0.5
|
|
qwertyu0647 | 0.5
|
|
qwertyu0648 | 0.5
|
|
qwertyu0649 | 0.5
|
|
qwertyu0650 | 0.5
|
|
qwertyu0651 | 0.5
|
|
qwertyu0652 | 0.5
|
|
qwertyu0653 | 0.5
|
|
qwertyu0654 | 0.5
|
|
qwertyu0655 | 0.5
|
|
qwertyu0656 | 0.5
|
|
qwertyu0657 | 0.5
|
|
qwertyu0658 | 0.5
|
|
qwertyu0659 | 0.5
|
|
qwertyu0660 | 0.5
|
|
qwertyu0661 | 0.5
|
|
qwertyu0662 | 0.5
|
|
qwertyu0663 | 0.5
|
|
qwertyu0664 | 0.5
|
|
qwertyu0665 | 0.5
|
|
qwertyu0666 | 0.5
|
|
qwertyu0667 | 0.5
|
|
qwertyu0668 | 0.5
|
|
qwertyu0669 | 0.5
|
|
qwertyu0670 | 0.5
|
|
qwertyu0671 | 0.5
|
|
qwertyu0672 | 0.5
|
|
qwertyu0673 | 0.5
|
|
qwertyu0674 | 0.5
|
|
qwertyu0675 | 0.5
|
|
qwertyu0676 | 0.5
|
|
qwertyu0677 | 0.5
|
|
qwertyu0678 | 0.5
|
|
qwertyu0679 | 0.5
|
|
qwertyu0680 | 0.5
|
|
qwertyu0681 | 0.5
|
|
qwertyu0682 | 0.5
|
|
qwertyu0683 | 0.5
|
|
qwertyu0684 | 0.5
|
|
qwertyu0685 | 0.5
|
|
qwertyu0686 | 0.5
|
|
qwertyu0687 | 0.5
|
|
qwertyu0689 | 0.5
|
|
qwertyu0690 | 0.5
|
|
qwertyu0691 | 0.5
|
|
qwertyu0692 | 0.5
|
|
qwertyu0693 | 0.5
|
|
qwertyu0694 | 0.5
|
|
qwertyu0695 | 0.5
|
|
qwertyu0696 | 0.5
|
|
qwertyu0697 | 0.5
|
|
qwertyu0698 | 0.5
|
|
qwertyu0699 | 0.5
|
|
qwertyu0700 | 0.5
|
|
qwertyu0701 | 0.5
|
|
qwertyu0702 | 0.5
|
|
qwertyu0703 | 0.5
|
|
qwertyu0704 | 0.5
|
|
qwertyu0705 | 0.5
|
|
qwertyu0706 | 0.5
|
|
qwertyu0707 | 0.5
|
|
qwertyu0708 | 0.5
|
|
qwertyu0709 | 0.5
|
|
qwertyu0710 | 0.5
|
|
qwertyu0711 | 0.5
|
|
qwertyu0712 | 0.5
|
|
qwertyu0713 | 0.5
|
|
qwertyu0714 | 0.5
|
|
qwertyu0715 | 0.5
|
|
qwertyu0716 | 0.5
|
|
qwertyu0717 | 0.5
|
|
qwertyu0718 | 0.5
|
|
qwertyu0719 | 0.5
|
|
qwertyu0720 | 0.5
|
|
qwertyu0721 | 0.5
|
|
qwertyu0722 | 0.5
|
|
qwertyu0723 | 0.5
|
|
qwertyu0724 | 0.5
|
|
qwertyu0725 | 0.5
|
|
qwertyu0726 | 0.5
|
|
qwertyu0727 | 0.5
|
|
qwertyu0728 | 0.5
|
|
qwertyu0729 | 0.5
|
|
qwertyu0730 | 0.5
|
|
qwertyu0731 | 0.5
|
|
qwertyu0732 | 0.5
|
|
qwertyu0733 | 0.5
|
|
qwertyu0734 | 0.5
|
|
qwertyu0735 | 0.5
|
|
qwertyu0736 | 0.5
|
|
qwertyu0737 | 0.5
|
|
qwertyu0738 | 0.5
|
|
qwertyu0739 | 0.5
|
|
qwertyu0740 | 0.5
|
|
qwertyu0741 | 0.5
|
|
qwertyu0742 | 0.5
|
|
qwertyu0743 | 0.5
|
|
qwertyu0744 | 0.5
|
|
qwertyu0745 | 0.5
|
|
qwertyu0746 | 0.5
|
|
qwertyu0747 | 0.5
|
|
qwertyu0748 | 0.5
|
|
qwertyu0749 | 0.5
|
|
qwertyu0750 | 0.5
|
|
qwertyu0751 | 0.5
|
|
qwertyu0752 | 0.5
|
|
qwertyu0753 | 0.5
|
|
qwertyu0754 | 0.5
|
|
qwertyu0755 | 0.5
|
|
qwertyu0756 | 0.5
|
|
qwertyu0757 | 0.5
|
|
qwertyu0758 | 0.5
|
|
qwertyu0759 | 0.5
|
|
qwertyu0760 | 0.5
|
|
qwertyu0761 | 0.5
|
|
qwertyu0762 | 0.5
|
|
qwertyu0763 | 0.5
|
|
qwertyu0764 | 0.5
|
|
qwertyu0765 | 0.5
|
|
qwertyu0766 | 0.5
|
|
qwertyu0767 | 0.5
|
|
qwertyu0768 | 0.5
|
|
qwertyu0769 | 0.5
|
|
qwertyu0770 | 0.5
|
|
qwertyu0771 | 0.5
|
|
qwertyu0772 | 0.5
|
|
qwertyu0773 | 0.5
|
|
qwertyu0774 | 0.5
|
|
qwertyu0775 | 0.5
|
|
qwertyu0776 | 0.5
|
|
qwertyu0777 | 0.5
|
|
qwertyu0778 | 0.5
|
|
qwertyu0779 | 0.5
|
|
qwertyu0780 | 0.5
|
|
qwertyu0781 | 0.5
|
|
qwertyu0782 | 0.5
|
|
qwertyu0783 | 0.5
|
|
qwertyu0784 | 0.5
|
|
qwertyu0785 | 0.5
|
|
qwertyu0786 | 0.5
|
|
qwertyu0787 | 0.5
|
|
qwertyu0789 | 0.5
|
|
qwertyu0790 | 0.5
|
|
qwertyu0791 | 0.5
|
|
qwertyu0792 | 0.5
|
|
qwertyu0793 | 0.5
|
|
qwertyu0794 | 0.5
|
|
qwertyu0795 | 0.5
|
|
qwertyu0796 | 0.5
|
|
qwertyu0797 | 0.5
|
|
qwertyu0798 | 0.5
|
|
qwertyu0799 | 0.5
|
|
qwertyu0800 | 0.5
|
|
qwertyu0801 | 0.5
|
|
qwertyu0802 | 0.5
|
|
qwertyu0803 | 0.5
|
|
qwertyu0804 | 0.5
|
|
qwertyu0805 | 0.5
|
|
qwertyu0806 | 0.5
|
|
qwertyu0807 | 0.5
|
|
qwertyu0808 | 0.5
|
|
qwertyu0809 | 0.5
|
|
qwertyu0810 | 0.5
|
|
qwertyu0811 | 0.5
|
|
qwertyu0812 | 0.5
|
|
qwertyu0813 | 0.5
|
|
qwertyu0814 | 0.5
|
|
qwertyu0815 | 0.5
|
|
qwertyu0816 | 0.5
|
|
qwertyu0817 | 0.5
|
|
qwertyu0818 | 0.5
|
|
qwertyu0819 | 0.5
|
|
qwertyu0820 | 0.5
|
|
qwertyu0821 | 0.5
|
|
qwertyu0822 | 0.5
|
|
qwertyu0823 | 0.5
|
|
qwertyu0824 | 0.5
|
|
qwertyu0825 | 0.5
|
|
qwertyu0826 | 0.5
|
|
qwertyu0827 | 0.5
|
|
qwertyu0828 | 0.5
|
|
qwertyu0829 | 0.5
|
|
qwertyu0830 | 0.5
|
|
qwertyu0831 | 0.5
|
|
qwertyu0832 | 0.5
|
|
qwertyu0833 | 0.5
|
|
qwertyu0834 | 0.5
|
|
qwertyu0835 | 0.5
|
|
qwertyu0836 | 0.5
|
|
qwertyu0837 | 0.5
|
|
qwertyu0838 | 0.5
|
|
qwertyu0839 | 0.5
|
|
qwertyu0840 | 0.5
|
|
qwertyu0841 | 0.5
|
|
qwertyu0842 | 0.5
|
|
qwertyu0843 | 0.5
|
|
qwertyu0844 | 0.5
|
|
qwertyu0845 | 0.5
|
|
qwertyu0846 | 0.5
|
|
qwertyu0847 | 0.5
|
|
qwertyu0848 | 0.5
|
|
qwertyu0849 | 0.5
|
|
qwertyu0850 | 0.5
|
|
qwertyu0851 | 0.5
|
|
qwertyu0852 | 0.5
|
|
qwertyu0853 | 0.5
|
|
qwertyu0854 | 0.5
|
|
qwertyu0855 | 0.5
|
|
qwertyu0856 | 0.5
|
|
qwertyu0857 | 0.5
|
|
qwertyu0858 | 0.5
|
|
qwertyu0859 | 0.5
|
|
qwertyu0860 | 0.5
|
|
qwertyu0861 | 0.5
|
|
qwertyu0862 | 0.5
|
|
qwertyu0863 | 0.5
|
|
qwertyu0864 | 0.5
|
|
qwertyu0865 | 0.5
|
|
qwertyu0866 | 0.5
|
|
qwertyu0867 | 0.5
|
|
qwertyu0868 | 0.5
|
|
qwertyu0869 | 0.5
|
|
qwertyu0870 | 0.5
|
|
qwertyu0871 | 0.5
|
|
qwertyu0872 | 0.5
|
|
qwertyu0873 | 0.5
|
|
qwertyu0874 | 0.5
|
|
qwertyu0875 | 0.5
|
|
qwertyu0876 | 0.5
|
|
qwertyu0877 | 0.5
|
|
qwertyu0878 | 0.5
|
|
qwertyu0879 | 0.5
|
|
qwertyu0880 | 0.5
|
|
qwertyu0881 | 0.5
|
|
qwertyu0882 | 0.5
|
|
qwertyu0883 | 0.5
|
|
qwertyu0884 | 0.5
|
|
qwertyu0885 | 0.5
|
|
qwertyu0886 | 0.5
|
|
qwertyu0887 | 0.5
|
|
qwertyu0889 | 0.5
|
|
qwertyu0890 | 0.5
|
|
qwertyu0891 | 0.5
|
|
qwertyu0892 | 0.5
|
|
qwertyu0893 | 0.5
|
|
qwertyu0894 | 0.5
|
|
qwertyu0895 | 0.5
|
|
qwertyu0896 | 0.5
|
|
qwertyu0897 | 0.5
|
|
qwertyu0898 | 0.5
|
|
qwertyu0899 | 0.5
|
|
qwertyu1000 | 0.411765
|
|
(1000 rows)
|
|
|
|
select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.6
|
|
qwertyu0980 | 0.411765
|
|
qwertyu0981 | 0.411765
|
|
qwertyu0982 | 0.411765
|
|
qwertyu0983 | 0.411765
|
|
qwertyu0984 | 0.411765
|
|
qwertyu0985 | 0.411765
|
|
qwertyu0986 | 0.411765
|
|
qwertyu0987 | 0.411765
|
|
qwertyu0989 | 0.411765
|
|
qwertyu0088 | 0.333333
|
|
qwertyu0098 | 0.333333
|
|
qwertyu0188 | 0.333333
|
|
qwertyu0288 | 0.333333
|
|
qwertyu0388 | 0.333333
|
|
qwertyu0488 | 0.333333
|
|
qwertyu0588 | 0.333333
|
|
qwertyu0688 | 0.333333
|
|
qwertyu0788 | 0.333333
|
|
qwertyu0888 | 0.333333
|
|
qwertyu0900 | 0.333333
|
|
qwertyu0901 | 0.333333
|
|
qwertyu0902 | 0.333333
|
|
qwertyu0903 | 0.333333
|
|
qwertyu0904 | 0.333333
|
|
qwertyu0905 | 0.333333
|
|
qwertyu0906 | 0.333333
|
|
qwertyu0907 | 0.333333
|
|
qwertyu0908 | 0.333333
|
|
qwertyu0909 | 0.333333
|
|
qwertyu0910 | 0.333333
|
|
qwertyu0911 | 0.333333
|
|
qwertyu0912 | 0.333333
|
|
qwertyu0913 | 0.333333
|
|
qwertyu0914 | 0.333333
|
|
qwertyu0915 | 0.333333
|
|
qwertyu0916 | 0.333333
|
|
qwertyu0917 | 0.333333
|
|
qwertyu0918 | 0.333333
|
|
qwertyu0919 | 0.333333
|
|
qwertyu0920 | 0.333333
|
|
qwertyu0921 | 0.333333
|
|
qwertyu0922 | 0.333333
|
|
qwertyu0923 | 0.333333
|
|
qwertyu0924 | 0.333333
|
|
qwertyu0925 | 0.333333
|
|
qwertyu0926 | 0.333333
|
|
qwertyu0927 | 0.333333
|
|
qwertyu0928 | 0.333333
|
|
qwertyu0929 | 0.333333
|
|
qwertyu0930 | 0.333333
|
|
qwertyu0931 | 0.333333
|
|
qwertyu0932 | 0.333333
|
|
qwertyu0933 | 0.333333
|
|
qwertyu0934 | 0.333333
|
|
qwertyu0935 | 0.333333
|
|
qwertyu0936 | 0.333333
|
|
qwertyu0937 | 0.333333
|
|
qwertyu0938 | 0.333333
|
|
qwertyu0939 | 0.333333
|
|
qwertyu0940 | 0.333333
|
|
qwertyu0941 | 0.333333
|
|
qwertyu0942 | 0.333333
|
|
qwertyu0943 | 0.333333
|
|
qwertyu0944 | 0.333333
|
|
qwertyu0945 | 0.333333
|
|
qwertyu0946 | 0.333333
|
|
qwertyu0947 | 0.333333
|
|
qwertyu0948 | 0.333333
|
|
qwertyu0949 | 0.333333
|
|
qwertyu0950 | 0.333333
|
|
qwertyu0951 | 0.333333
|
|
qwertyu0952 | 0.333333
|
|
qwertyu0953 | 0.333333
|
|
qwertyu0954 | 0.333333
|
|
qwertyu0955 | 0.333333
|
|
qwertyu0956 | 0.333333
|
|
qwertyu0957 | 0.333333
|
|
qwertyu0958 | 0.333333
|
|
qwertyu0959 | 0.333333
|
|
qwertyu0960 | 0.333333
|
|
qwertyu0961 | 0.333333
|
|
qwertyu0962 | 0.333333
|
|
qwertyu0963 | 0.333333
|
|
qwertyu0964 | 0.333333
|
|
qwertyu0965 | 0.333333
|
|
qwertyu0966 | 0.333333
|
|
qwertyu0967 | 0.333333
|
|
qwertyu0968 | 0.333333
|
|
qwertyu0969 | 0.333333
|
|
qwertyu0970 | 0.333333
|
|
qwertyu0971 | 0.333333
|
|
qwertyu0972 | 0.333333
|
|
qwertyu0973 | 0.333333
|
|
qwertyu0974 | 0.333333
|
|
qwertyu0975 | 0.333333
|
|
qwertyu0976 | 0.333333
|
|
qwertyu0977 | 0.333333
|
|
qwertyu0978 | 0.333333
|
|
qwertyu0979 | 0.333333
|
|
qwertyu0990 | 0.333333
|
|
qwertyu0991 | 0.333333
|
|
qwertyu0992 | 0.333333
|
|
qwertyu0993 | 0.333333
|
|
qwertyu0994 | 0.333333
|
|
qwertyu0995 | 0.333333
|
|
qwertyu0996 | 0.333333
|
|
qwertyu0997 | 0.333333
|
|
qwertyu0998 | 0.333333
|
|
qwertyu0999 | 0.333333
|
|
(110 rows)
|
|
|
|
select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.333333
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
QUERY PLAN
|
|
---------------------------------------------------
|
|
Limit
|
|
-> Index Scan using trgm_idx on test_trgm
|
|
Order By: (t <-> 'q0987wertyu0988'::text)
|
|
(3 rows)
|
|
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
?column? | t
|
|
----------+-------------
|
|
0.411765 | qwertyu0988
|
|
0.5 | qwertyu0987
|
|
(2 rows)
|
|
|
|
select count(*) from test_trgm where t ~ '[qwerty]{2}-?[qwerty]{2}';
|
|
count
|
|
-------
|
|
1000
|
|
(1 row)
|
|
|
|
drop index trgm_idx;
|
|
create index trgm_idx on test_trgm using gist (t gist_trgm_ops(siglen=0));
|
|
ERROR: value 0 out of bounds for option "siglen"
|
|
DETAIL: Valid values are between "1" and "2024".
|
|
create index trgm_idx on test_trgm using gist (t gist_trgm_ops(siglen=2025));
|
|
ERROR: value 2025 out of bounds for option "siglen"
|
|
DETAIL: Valid values are between "1" and "2024".
|
|
create index trgm_idx on test_trgm using gist (t gist_trgm_ops(siglen=2024));
|
|
set enable_seqscan=off;
|
|
select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 1
|
|
qwertyu0980 | 0.714286
|
|
qwertyu0981 | 0.714286
|
|
qwertyu0982 | 0.714286
|
|
qwertyu0983 | 0.714286
|
|
qwertyu0984 | 0.714286
|
|
qwertyu0985 | 0.714286
|
|
qwertyu0986 | 0.714286
|
|
qwertyu0987 | 0.714286
|
|
qwertyu0989 | 0.714286
|
|
qwertyu0088 | 0.6
|
|
qwertyu0098 | 0.6
|
|
qwertyu0188 | 0.6
|
|
qwertyu0288 | 0.6
|
|
qwertyu0388 | 0.6
|
|
qwertyu0488 | 0.6
|
|
qwertyu0588 | 0.6
|
|
qwertyu0688 | 0.6
|
|
qwertyu0788 | 0.6
|
|
qwertyu0888 | 0.6
|
|
qwertyu0900 | 0.6
|
|
qwertyu0901 | 0.6
|
|
qwertyu0902 | 0.6
|
|
qwertyu0903 | 0.6
|
|
qwertyu0904 | 0.6
|
|
qwertyu0905 | 0.6
|
|
qwertyu0906 | 0.6
|
|
qwertyu0907 | 0.6
|
|
qwertyu0908 | 0.6
|
|
qwertyu0909 | 0.6
|
|
qwertyu0910 | 0.6
|
|
qwertyu0911 | 0.6
|
|
qwertyu0912 | 0.6
|
|
qwertyu0913 | 0.6
|
|
qwertyu0914 | 0.6
|
|
qwertyu0915 | 0.6
|
|
qwertyu0916 | 0.6
|
|
qwertyu0917 | 0.6
|
|
qwertyu0918 | 0.6
|
|
qwertyu0919 | 0.6
|
|
qwertyu0920 | 0.6
|
|
qwertyu0921 | 0.6
|
|
qwertyu0922 | 0.6
|
|
qwertyu0923 | 0.6
|
|
qwertyu0924 | 0.6
|
|
qwertyu0925 | 0.6
|
|
qwertyu0926 | 0.6
|
|
qwertyu0927 | 0.6
|
|
qwertyu0928 | 0.6
|
|
qwertyu0929 | 0.6
|
|
qwertyu0930 | 0.6
|
|
qwertyu0931 | 0.6
|
|
qwertyu0932 | 0.6
|
|
qwertyu0933 | 0.6
|
|
qwertyu0934 | 0.6
|
|
qwertyu0935 | 0.6
|
|
qwertyu0936 | 0.6
|
|
qwertyu0937 | 0.6
|
|
qwertyu0938 | 0.6
|
|
qwertyu0939 | 0.6
|
|
qwertyu0940 | 0.6
|
|
qwertyu0941 | 0.6
|
|
qwertyu0942 | 0.6
|
|
qwertyu0943 | 0.6
|
|
qwertyu0944 | 0.6
|
|
qwertyu0945 | 0.6
|
|
qwertyu0946 | 0.6
|
|
qwertyu0947 | 0.6
|
|
qwertyu0948 | 0.6
|
|
qwertyu0949 | 0.6
|
|
qwertyu0950 | 0.6
|
|
qwertyu0951 | 0.6
|
|
qwertyu0952 | 0.6
|
|
qwertyu0953 | 0.6
|
|
qwertyu0954 | 0.6
|
|
qwertyu0955 | 0.6
|
|
qwertyu0956 | 0.6
|
|
qwertyu0957 | 0.6
|
|
qwertyu0958 | 0.6
|
|
qwertyu0959 | 0.6
|
|
qwertyu0960 | 0.6
|
|
qwertyu0961 | 0.6
|
|
qwertyu0962 | 0.6
|
|
qwertyu0963 | 0.6
|
|
qwertyu0964 | 0.6
|
|
qwertyu0965 | 0.6
|
|
qwertyu0966 | 0.6
|
|
qwertyu0967 | 0.6
|
|
qwertyu0968 | 0.6
|
|
qwertyu0969 | 0.6
|
|
qwertyu0970 | 0.6
|
|
qwertyu0971 | 0.6
|
|
qwertyu0972 | 0.6
|
|
qwertyu0973 | 0.6
|
|
qwertyu0974 | 0.6
|
|
qwertyu0975 | 0.6
|
|
qwertyu0976 | 0.6
|
|
qwertyu0977 | 0.6
|
|
qwertyu0978 | 0.6
|
|
qwertyu0979 | 0.6
|
|
qwertyu0990 | 0.6
|
|
qwertyu0991 | 0.6
|
|
qwertyu0992 | 0.6
|
|
qwertyu0993 | 0.6
|
|
qwertyu0994 | 0.6
|
|
qwertyu0995 | 0.6
|
|
qwertyu0996 | 0.6
|
|
qwertyu0997 | 0.6
|
|
qwertyu0998 | 0.6
|
|
qwertyu0999 | 0.6
|
|
qwertyu0001 | 0.5
|
|
qwertyu0002 | 0.5
|
|
qwertyu0003 | 0.5
|
|
qwertyu0004 | 0.5
|
|
qwertyu0005 | 0.5
|
|
qwertyu0006 | 0.5
|
|
qwertyu0007 | 0.5
|
|
qwertyu0008 | 0.5
|
|
qwertyu0009 | 0.5
|
|
qwertyu0010 | 0.5
|
|
qwertyu0011 | 0.5
|
|
qwertyu0012 | 0.5
|
|
qwertyu0013 | 0.5
|
|
qwertyu0014 | 0.5
|
|
qwertyu0015 | 0.5
|
|
qwertyu0016 | 0.5
|
|
qwertyu0017 | 0.5
|
|
qwertyu0018 | 0.5
|
|
qwertyu0019 | 0.5
|
|
qwertyu0020 | 0.5
|
|
qwertyu0021 | 0.5
|
|
qwertyu0022 | 0.5
|
|
qwertyu0023 | 0.5
|
|
qwertyu0024 | 0.5
|
|
qwertyu0025 | 0.5
|
|
qwertyu0026 | 0.5
|
|
qwertyu0027 | 0.5
|
|
qwertyu0028 | 0.5
|
|
qwertyu0029 | 0.5
|
|
qwertyu0030 | 0.5
|
|
qwertyu0031 | 0.5
|
|
qwertyu0032 | 0.5
|
|
qwertyu0033 | 0.5
|
|
qwertyu0034 | 0.5
|
|
qwertyu0035 | 0.5
|
|
qwertyu0036 | 0.5
|
|
qwertyu0037 | 0.5
|
|
qwertyu0038 | 0.5
|
|
qwertyu0039 | 0.5
|
|
qwertyu0040 | 0.5
|
|
qwertyu0041 | 0.5
|
|
qwertyu0042 | 0.5
|
|
qwertyu0043 | 0.5
|
|
qwertyu0044 | 0.5
|
|
qwertyu0045 | 0.5
|
|
qwertyu0046 | 0.5
|
|
qwertyu0047 | 0.5
|
|
qwertyu0048 | 0.5
|
|
qwertyu0049 | 0.5
|
|
qwertyu0050 | 0.5
|
|
qwertyu0051 | 0.5
|
|
qwertyu0052 | 0.5
|
|
qwertyu0053 | 0.5
|
|
qwertyu0054 | 0.5
|
|
qwertyu0055 | 0.5
|
|
qwertyu0056 | 0.5
|
|
qwertyu0057 | 0.5
|
|
qwertyu0058 | 0.5
|
|
qwertyu0059 | 0.5
|
|
qwertyu0060 | 0.5
|
|
qwertyu0061 | 0.5
|
|
qwertyu0062 | 0.5
|
|
qwertyu0063 | 0.5
|
|
qwertyu0064 | 0.5
|
|
qwertyu0065 | 0.5
|
|
qwertyu0066 | 0.5
|
|
qwertyu0067 | 0.5
|
|
qwertyu0068 | 0.5
|
|
qwertyu0069 | 0.5
|
|
qwertyu0070 | 0.5
|
|
qwertyu0071 | 0.5
|
|
qwertyu0072 | 0.5
|
|
qwertyu0073 | 0.5
|
|
qwertyu0074 | 0.5
|
|
qwertyu0075 | 0.5
|
|
qwertyu0076 | 0.5
|
|
qwertyu0077 | 0.5
|
|
qwertyu0078 | 0.5
|
|
qwertyu0079 | 0.5
|
|
qwertyu0080 | 0.5
|
|
qwertyu0081 | 0.5
|
|
qwertyu0082 | 0.5
|
|
qwertyu0083 | 0.5
|
|
qwertyu0084 | 0.5
|
|
qwertyu0085 | 0.5
|
|
qwertyu0086 | 0.5
|
|
qwertyu0087 | 0.5
|
|
qwertyu0089 | 0.5
|
|
qwertyu0090 | 0.5
|
|
qwertyu0091 | 0.5
|
|
qwertyu0092 | 0.5
|
|
qwertyu0093 | 0.5
|
|
qwertyu0094 | 0.5
|
|
qwertyu0095 | 0.5
|
|
qwertyu0096 | 0.5
|
|
qwertyu0097 | 0.5
|
|
qwertyu0099 | 0.5
|
|
qwertyu0100 | 0.5
|
|
qwertyu0101 | 0.5
|
|
qwertyu0102 | 0.5
|
|
qwertyu0103 | 0.5
|
|
qwertyu0104 | 0.5
|
|
qwertyu0105 | 0.5
|
|
qwertyu0106 | 0.5
|
|
qwertyu0107 | 0.5
|
|
qwertyu0108 | 0.5
|
|
qwertyu0109 | 0.5
|
|
qwertyu0110 | 0.5
|
|
qwertyu0111 | 0.5
|
|
qwertyu0112 | 0.5
|
|
qwertyu0113 | 0.5
|
|
qwertyu0114 | 0.5
|
|
qwertyu0115 | 0.5
|
|
qwertyu0116 | 0.5
|
|
qwertyu0117 | 0.5
|
|
qwertyu0118 | 0.5
|
|
qwertyu0119 | 0.5
|
|
qwertyu0120 | 0.5
|
|
qwertyu0121 | 0.5
|
|
qwertyu0122 | 0.5
|
|
qwertyu0123 | 0.5
|
|
qwertyu0124 | 0.5
|
|
qwertyu0125 | 0.5
|
|
qwertyu0126 | 0.5
|
|
qwertyu0127 | 0.5
|
|
qwertyu0128 | 0.5
|
|
qwertyu0129 | 0.5
|
|
qwertyu0130 | 0.5
|
|
qwertyu0131 | 0.5
|
|
qwertyu0132 | 0.5
|
|
qwertyu0133 | 0.5
|
|
qwertyu0134 | 0.5
|
|
qwertyu0135 | 0.5
|
|
qwertyu0136 | 0.5
|
|
qwertyu0137 | 0.5
|
|
qwertyu0138 | 0.5
|
|
qwertyu0139 | 0.5
|
|
qwertyu0140 | 0.5
|
|
qwertyu0141 | 0.5
|
|
qwertyu0142 | 0.5
|
|
qwertyu0143 | 0.5
|
|
qwertyu0144 | 0.5
|
|
qwertyu0145 | 0.5
|
|
qwertyu0146 | 0.5
|
|
qwertyu0147 | 0.5
|
|
qwertyu0148 | 0.5
|
|
qwertyu0149 | 0.5
|
|
qwertyu0150 | 0.5
|
|
qwertyu0151 | 0.5
|
|
qwertyu0152 | 0.5
|
|
qwertyu0153 | 0.5
|
|
qwertyu0154 | 0.5
|
|
qwertyu0155 | 0.5
|
|
qwertyu0156 | 0.5
|
|
qwertyu0157 | 0.5
|
|
qwertyu0158 | 0.5
|
|
qwertyu0159 | 0.5
|
|
qwertyu0160 | 0.5
|
|
qwertyu0161 | 0.5
|
|
qwertyu0162 | 0.5
|
|
qwertyu0163 | 0.5
|
|
qwertyu0164 | 0.5
|
|
qwertyu0165 | 0.5
|
|
qwertyu0166 | 0.5
|
|
qwertyu0167 | 0.5
|
|
qwertyu0168 | 0.5
|
|
qwertyu0169 | 0.5
|
|
qwertyu0170 | 0.5
|
|
qwertyu0171 | 0.5
|
|
qwertyu0172 | 0.5
|
|
qwertyu0173 | 0.5
|
|
qwertyu0174 | 0.5
|
|
qwertyu0175 | 0.5
|
|
qwertyu0176 | 0.5
|
|
qwertyu0177 | 0.5
|
|
qwertyu0178 | 0.5
|
|
qwertyu0179 | 0.5
|
|
qwertyu0180 | 0.5
|
|
qwertyu0181 | 0.5
|
|
qwertyu0182 | 0.5
|
|
qwertyu0183 | 0.5
|
|
qwertyu0184 | 0.5
|
|
qwertyu0185 | 0.5
|
|
qwertyu0186 | 0.5
|
|
qwertyu0187 | 0.5
|
|
qwertyu0189 | 0.5
|
|
qwertyu0190 | 0.5
|
|
qwertyu0191 | 0.5
|
|
qwertyu0192 | 0.5
|
|
qwertyu0193 | 0.5
|
|
qwertyu0194 | 0.5
|
|
qwertyu0195 | 0.5
|
|
qwertyu0196 | 0.5
|
|
qwertyu0197 | 0.5
|
|
qwertyu0198 | 0.5
|
|
qwertyu0199 | 0.5
|
|
qwertyu0200 | 0.5
|
|
qwertyu0201 | 0.5
|
|
qwertyu0202 | 0.5
|
|
qwertyu0203 | 0.5
|
|
qwertyu0204 | 0.5
|
|
qwertyu0205 | 0.5
|
|
qwertyu0206 | 0.5
|
|
qwertyu0207 | 0.5
|
|
qwertyu0208 | 0.5
|
|
qwertyu0209 | 0.5
|
|
qwertyu0210 | 0.5
|
|
qwertyu0211 | 0.5
|
|
qwertyu0212 | 0.5
|
|
qwertyu0213 | 0.5
|
|
qwertyu0214 | 0.5
|
|
qwertyu0215 | 0.5
|
|
qwertyu0216 | 0.5
|
|
qwertyu0217 | 0.5
|
|
qwertyu0218 | 0.5
|
|
qwertyu0219 | 0.5
|
|
qwertyu0220 | 0.5
|
|
qwertyu0221 | 0.5
|
|
qwertyu0222 | 0.5
|
|
qwertyu0223 | 0.5
|
|
qwertyu0224 | 0.5
|
|
qwertyu0225 | 0.5
|
|
qwertyu0226 | 0.5
|
|
qwertyu0227 | 0.5
|
|
qwertyu0228 | 0.5
|
|
qwertyu0229 | 0.5
|
|
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|
qwertyu0689 | 0.5
|
|
qwertyu0690 | 0.5
|
|
qwertyu0691 | 0.5
|
|
qwertyu0692 | 0.5
|
|
qwertyu0693 | 0.5
|
|
qwertyu0694 | 0.5
|
|
qwertyu0695 | 0.5
|
|
qwertyu0696 | 0.5
|
|
qwertyu0697 | 0.5
|
|
qwertyu0698 | 0.5
|
|
qwertyu0699 | 0.5
|
|
qwertyu0700 | 0.5
|
|
qwertyu0701 | 0.5
|
|
qwertyu0702 | 0.5
|
|
qwertyu0703 | 0.5
|
|
qwertyu0704 | 0.5
|
|
qwertyu0705 | 0.5
|
|
qwertyu0706 | 0.5
|
|
qwertyu0707 | 0.5
|
|
qwertyu0708 | 0.5
|
|
qwertyu0709 | 0.5
|
|
qwertyu0710 | 0.5
|
|
qwertyu0711 | 0.5
|
|
qwertyu0712 | 0.5
|
|
qwertyu0713 | 0.5
|
|
qwertyu0714 | 0.5
|
|
qwertyu0715 | 0.5
|
|
qwertyu0716 | 0.5
|
|
qwertyu0717 | 0.5
|
|
qwertyu0718 | 0.5
|
|
qwertyu0719 | 0.5
|
|
qwertyu0720 | 0.5
|
|
qwertyu0721 | 0.5
|
|
qwertyu0722 | 0.5
|
|
qwertyu0723 | 0.5
|
|
qwertyu0724 | 0.5
|
|
qwertyu0725 | 0.5
|
|
qwertyu0726 | 0.5
|
|
qwertyu0727 | 0.5
|
|
qwertyu0728 | 0.5
|
|
qwertyu0729 | 0.5
|
|
qwertyu0730 | 0.5
|
|
qwertyu0731 | 0.5
|
|
qwertyu0732 | 0.5
|
|
qwertyu0733 | 0.5
|
|
qwertyu0734 | 0.5
|
|
qwertyu0735 | 0.5
|
|
qwertyu0736 | 0.5
|
|
qwertyu0737 | 0.5
|
|
qwertyu0738 | 0.5
|
|
qwertyu0739 | 0.5
|
|
qwertyu0740 | 0.5
|
|
qwertyu0741 | 0.5
|
|
qwertyu0742 | 0.5
|
|
qwertyu0743 | 0.5
|
|
qwertyu0744 | 0.5
|
|
qwertyu0745 | 0.5
|
|
qwertyu0746 | 0.5
|
|
qwertyu0747 | 0.5
|
|
qwertyu0748 | 0.5
|
|
qwertyu0749 | 0.5
|
|
qwertyu0750 | 0.5
|
|
qwertyu0751 | 0.5
|
|
qwertyu0752 | 0.5
|
|
qwertyu0753 | 0.5
|
|
qwertyu0754 | 0.5
|
|
qwertyu0755 | 0.5
|
|
qwertyu0756 | 0.5
|
|
qwertyu0757 | 0.5
|
|
qwertyu0758 | 0.5
|
|
qwertyu0759 | 0.5
|
|
qwertyu0760 | 0.5
|
|
qwertyu0761 | 0.5
|
|
qwertyu0762 | 0.5
|
|
qwertyu0763 | 0.5
|
|
qwertyu0764 | 0.5
|
|
qwertyu0765 | 0.5
|
|
qwertyu0766 | 0.5
|
|
qwertyu0767 | 0.5
|
|
qwertyu0768 | 0.5
|
|
qwertyu0769 | 0.5
|
|
qwertyu0770 | 0.5
|
|
qwertyu0771 | 0.5
|
|
qwertyu0772 | 0.5
|
|
qwertyu0773 | 0.5
|
|
qwertyu0774 | 0.5
|
|
qwertyu0775 | 0.5
|
|
qwertyu0776 | 0.5
|
|
qwertyu0777 | 0.5
|
|
qwertyu0778 | 0.5
|
|
qwertyu0779 | 0.5
|
|
qwertyu0780 | 0.5
|
|
qwertyu0781 | 0.5
|
|
qwertyu0782 | 0.5
|
|
qwertyu0783 | 0.5
|
|
qwertyu0784 | 0.5
|
|
qwertyu0785 | 0.5
|
|
qwertyu0786 | 0.5
|
|
qwertyu0787 | 0.5
|
|
qwertyu0789 | 0.5
|
|
qwertyu0790 | 0.5
|
|
qwertyu0791 | 0.5
|
|
qwertyu0792 | 0.5
|
|
qwertyu0793 | 0.5
|
|
qwertyu0794 | 0.5
|
|
qwertyu0795 | 0.5
|
|
qwertyu0796 | 0.5
|
|
qwertyu0797 | 0.5
|
|
qwertyu0798 | 0.5
|
|
qwertyu0799 | 0.5
|
|
qwertyu0800 | 0.5
|
|
qwertyu0801 | 0.5
|
|
qwertyu0802 | 0.5
|
|
qwertyu0803 | 0.5
|
|
qwertyu0804 | 0.5
|
|
qwertyu0805 | 0.5
|
|
qwertyu0806 | 0.5
|
|
qwertyu0807 | 0.5
|
|
qwertyu0808 | 0.5
|
|
qwertyu0809 | 0.5
|
|
qwertyu0810 | 0.5
|
|
qwertyu0811 | 0.5
|
|
qwertyu0812 | 0.5
|
|
qwertyu0813 | 0.5
|
|
qwertyu0814 | 0.5
|
|
qwertyu0815 | 0.5
|
|
qwertyu0816 | 0.5
|
|
qwertyu0817 | 0.5
|
|
qwertyu0818 | 0.5
|
|
qwertyu0819 | 0.5
|
|
qwertyu0820 | 0.5
|
|
qwertyu0821 | 0.5
|
|
qwertyu0822 | 0.5
|
|
qwertyu0823 | 0.5
|
|
qwertyu0824 | 0.5
|
|
qwertyu0825 | 0.5
|
|
qwertyu0826 | 0.5
|
|
qwertyu0827 | 0.5
|
|
qwertyu0828 | 0.5
|
|
qwertyu0829 | 0.5
|
|
qwertyu0830 | 0.5
|
|
qwertyu0831 | 0.5
|
|
qwertyu0832 | 0.5
|
|
qwertyu0833 | 0.5
|
|
qwertyu0834 | 0.5
|
|
qwertyu0835 | 0.5
|
|
qwertyu0836 | 0.5
|
|
qwertyu0837 | 0.5
|
|
qwertyu0838 | 0.5
|
|
qwertyu0839 | 0.5
|
|
qwertyu0840 | 0.5
|
|
qwertyu0841 | 0.5
|
|
qwertyu0842 | 0.5
|
|
qwertyu0843 | 0.5
|
|
qwertyu0844 | 0.5
|
|
qwertyu0845 | 0.5
|
|
qwertyu0846 | 0.5
|
|
qwertyu0847 | 0.5
|
|
qwertyu0848 | 0.5
|
|
qwertyu0849 | 0.5
|
|
qwertyu0850 | 0.5
|
|
qwertyu0851 | 0.5
|
|
qwertyu0852 | 0.5
|
|
qwertyu0853 | 0.5
|
|
qwertyu0854 | 0.5
|
|
qwertyu0855 | 0.5
|
|
qwertyu0856 | 0.5
|
|
qwertyu0857 | 0.5
|
|
qwertyu0858 | 0.5
|
|
qwertyu0859 | 0.5
|
|
qwertyu0860 | 0.5
|
|
qwertyu0861 | 0.5
|
|
qwertyu0862 | 0.5
|
|
qwertyu0863 | 0.5
|
|
qwertyu0864 | 0.5
|
|
qwertyu0865 | 0.5
|
|
qwertyu0866 | 0.5
|
|
qwertyu0867 | 0.5
|
|
qwertyu0868 | 0.5
|
|
qwertyu0869 | 0.5
|
|
qwertyu0870 | 0.5
|
|
qwertyu0871 | 0.5
|
|
qwertyu0872 | 0.5
|
|
qwertyu0873 | 0.5
|
|
qwertyu0874 | 0.5
|
|
qwertyu0875 | 0.5
|
|
qwertyu0876 | 0.5
|
|
qwertyu0877 | 0.5
|
|
qwertyu0878 | 0.5
|
|
qwertyu0879 | 0.5
|
|
qwertyu0880 | 0.5
|
|
qwertyu0881 | 0.5
|
|
qwertyu0882 | 0.5
|
|
qwertyu0883 | 0.5
|
|
qwertyu0884 | 0.5
|
|
qwertyu0885 | 0.5
|
|
qwertyu0886 | 0.5
|
|
qwertyu0887 | 0.5
|
|
qwertyu0889 | 0.5
|
|
qwertyu0890 | 0.5
|
|
qwertyu0891 | 0.5
|
|
qwertyu0892 | 0.5
|
|
qwertyu0893 | 0.5
|
|
qwertyu0894 | 0.5
|
|
qwertyu0895 | 0.5
|
|
qwertyu0896 | 0.5
|
|
qwertyu0897 | 0.5
|
|
qwertyu0898 | 0.5
|
|
qwertyu0899 | 0.5
|
|
qwertyu1000 | 0.411765
|
|
(1000 rows)
|
|
|
|
select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.6
|
|
qwertyu0980 | 0.411765
|
|
qwertyu0981 | 0.411765
|
|
qwertyu0982 | 0.411765
|
|
qwertyu0983 | 0.411765
|
|
qwertyu0984 | 0.411765
|
|
qwertyu0985 | 0.411765
|
|
qwertyu0986 | 0.411765
|
|
qwertyu0987 | 0.411765
|
|
qwertyu0989 | 0.411765
|
|
qwertyu0088 | 0.333333
|
|
qwertyu0098 | 0.333333
|
|
qwertyu0188 | 0.333333
|
|
qwertyu0288 | 0.333333
|
|
qwertyu0388 | 0.333333
|
|
qwertyu0488 | 0.333333
|
|
qwertyu0588 | 0.333333
|
|
qwertyu0688 | 0.333333
|
|
qwertyu0788 | 0.333333
|
|
qwertyu0888 | 0.333333
|
|
qwertyu0900 | 0.333333
|
|
qwertyu0901 | 0.333333
|
|
qwertyu0902 | 0.333333
|
|
qwertyu0903 | 0.333333
|
|
qwertyu0904 | 0.333333
|
|
qwertyu0905 | 0.333333
|
|
qwertyu0906 | 0.333333
|
|
qwertyu0907 | 0.333333
|
|
qwertyu0908 | 0.333333
|
|
qwertyu0909 | 0.333333
|
|
qwertyu0910 | 0.333333
|
|
qwertyu0911 | 0.333333
|
|
qwertyu0912 | 0.333333
|
|
qwertyu0913 | 0.333333
|
|
qwertyu0914 | 0.333333
|
|
qwertyu0915 | 0.333333
|
|
qwertyu0916 | 0.333333
|
|
qwertyu0917 | 0.333333
|
|
qwertyu0918 | 0.333333
|
|
qwertyu0919 | 0.333333
|
|
qwertyu0920 | 0.333333
|
|
qwertyu0921 | 0.333333
|
|
qwertyu0922 | 0.333333
|
|
qwertyu0923 | 0.333333
|
|
qwertyu0924 | 0.333333
|
|
qwertyu0925 | 0.333333
|
|
qwertyu0926 | 0.333333
|
|
qwertyu0927 | 0.333333
|
|
qwertyu0928 | 0.333333
|
|
qwertyu0929 | 0.333333
|
|
qwertyu0930 | 0.333333
|
|
qwertyu0931 | 0.333333
|
|
qwertyu0932 | 0.333333
|
|
qwertyu0933 | 0.333333
|
|
qwertyu0934 | 0.333333
|
|
qwertyu0935 | 0.333333
|
|
qwertyu0936 | 0.333333
|
|
qwertyu0937 | 0.333333
|
|
qwertyu0938 | 0.333333
|
|
qwertyu0939 | 0.333333
|
|
qwertyu0940 | 0.333333
|
|
qwertyu0941 | 0.333333
|
|
qwertyu0942 | 0.333333
|
|
qwertyu0943 | 0.333333
|
|
qwertyu0944 | 0.333333
|
|
qwertyu0945 | 0.333333
|
|
qwertyu0946 | 0.333333
|
|
qwertyu0947 | 0.333333
|
|
qwertyu0948 | 0.333333
|
|
qwertyu0949 | 0.333333
|
|
qwertyu0950 | 0.333333
|
|
qwertyu0951 | 0.333333
|
|
qwertyu0952 | 0.333333
|
|
qwertyu0953 | 0.333333
|
|
qwertyu0954 | 0.333333
|
|
qwertyu0955 | 0.333333
|
|
qwertyu0956 | 0.333333
|
|
qwertyu0957 | 0.333333
|
|
qwertyu0958 | 0.333333
|
|
qwertyu0959 | 0.333333
|
|
qwertyu0960 | 0.333333
|
|
qwertyu0961 | 0.333333
|
|
qwertyu0962 | 0.333333
|
|
qwertyu0963 | 0.333333
|
|
qwertyu0964 | 0.333333
|
|
qwertyu0965 | 0.333333
|
|
qwertyu0966 | 0.333333
|
|
qwertyu0967 | 0.333333
|
|
qwertyu0968 | 0.333333
|
|
qwertyu0969 | 0.333333
|
|
qwertyu0970 | 0.333333
|
|
qwertyu0971 | 0.333333
|
|
qwertyu0972 | 0.333333
|
|
qwertyu0973 | 0.333333
|
|
qwertyu0974 | 0.333333
|
|
qwertyu0975 | 0.333333
|
|
qwertyu0976 | 0.333333
|
|
qwertyu0977 | 0.333333
|
|
qwertyu0978 | 0.333333
|
|
qwertyu0979 | 0.333333
|
|
qwertyu0990 | 0.333333
|
|
qwertyu0991 | 0.333333
|
|
qwertyu0992 | 0.333333
|
|
qwertyu0993 | 0.333333
|
|
qwertyu0994 | 0.333333
|
|
qwertyu0995 | 0.333333
|
|
qwertyu0996 | 0.333333
|
|
qwertyu0997 | 0.333333
|
|
qwertyu0998 | 0.333333
|
|
qwertyu0999 | 0.333333
|
|
(110 rows)
|
|
|
|
select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.333333
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
QUERY PLAN
|
|
---------------------------------------------------
|
|
Limit
|
|
-> Index Scan using trgm_idx on test_trgm
|
|
Order By: (t <-> 'q0987wertyu0988'::text)
|
|
(3 rows)
|
|
|
|
select t <-> 'q0987wertyu0988', t from test_trgm order by t <-> 'q0987wertyu0988' limit 2;
|
|
?column? | t
|
|
----------+-------------
|
|
0.411765 | qwertyu0988
|
|
0.5 | qwertyu0987
|
|
(2 rows)
|
|
|
|
select count(*) from test_trgm where t ~ '[qwerty]{2}-?[qwerty]{2}';
|
|
count
|
|
-------
|
|
1000
|
|
(1 row)
|
|
|
|
drop index trgm_idx;
|
|
create index trgm_idx on test_trgm using gin (t gin_trgm_ops);
|
|
set enable_seqscan=off;
|
|
select t,similarity(t,'qwertyu0988') as sml from test_trgm where t % 'qwertyu0988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 1
|
|
qwertyu0980 | 0.714286
|
|
qwertyu0981 | 0.714286
|
|
qwertyu0982 | 0.714286
|
|
qwertyu0983 | 0.714286
|
|
qwertyu0984 | 0.714286
|
|
qwertyu0985 | 0.714286
|
|
qwertyu0986 | 0.714286
|
|
qwertyu0987 | 0.714286
|
|
qwertyu0989 | 0.714286
|
|
qwertyu0088 | 0.6
|
|
qwertyu0098 | 0.6
|
|
qwertyu0188 | 0.6
|
|
qwertyu0288 | 0.6
|
|
qwertyu0388 | 0.6
|
|
qwertyu0488 | 0.6
|
|
qwertyu0588 | 0.6
|
|
qwertyu0688 | 0.6
|
|
qwertyu0788 | 0.6
|
|
qwertyu0888 | 0.6
|
|
qwertyu0900 | 0.6
|
|
qwertyu0901 | 0.6
|
|
qwertyu0902 | 0.6
|
|
qwertyu0903 | 0.6
|
|
qwertyu0904 | 0.6
|
|
qwertyu0905 | 0.6
|
|
qwertyu0906 | 0.6
|
|
qwertyu0907 | 0.6
|
|
qwertyu0908 | 0.6
|
|
qwertyu0909 | 0.6
|
|
qwertyu0910 | 0.6
|
|
qwertyu0911 | 0.6
|
|
qwertyu0912 | 0.6
|
|
qwertyu0913 | 0.6
|
|
qwertyu0914 | 0.6
|
|
qwertyu0915 | 0.6
|
|
qwertyu0916 | 0.6
|
|
qwertyu0917 | 0.6
|
|
qwertyu0918 | 0.6
|
|
qwertyu0919 | 0.6
|
|
qwertyu0920 | 0.6
|
|
qwertyu0921 | 0.6
|
|
qwertyu0922 | 0.6
|
|
qwertyu0923 | 0.6
|
|
qwertyu0924 | 0.6
|
|
qwertyu0925 | 0.6
|
|
qwertyu0926 | 0.6
|
|
qwertyu0927 | 0.6
|
|
qwertyu0928 | 0.6
|
|
qwertyu0929 | 0.6
|
|
qwertyu0930 | 0.6
|
|
qwertyu0931 | 0.6
|
|
qwertyu0932 | 0.6
|
|
qwertyu0933 | 0.6
|
|
qwertyu0934 | 0.6
|
|
qwertyu0935 | 0.6
|
|
qwertyu0936 | 0.6
|
|
qwertyu0937 | 0.6
|
|
qwertyu0938 | 0.6
|
|
qwertyu0939 | 0.6
|
|
qwertyu0940 | 0.6
|
|
qwertyu0941 | 0.6
|
|
qwertyu0942 | 0.6
|
|
qwertyu0943 | 0.6
|
|
qwertyu0944 | 0.6
|
|
qwertyu0945 | 0.6
|
|
qwertyu0946 | 0.6
|
|
qwertyu0947 | 0.6
|
|
qwertyu0948 | 0.6
|
|
qwertyu0949 | 0.6
|
|
qwertyu0950 | 0.6
|
|
qwertyu0951 | 0.6
|
|
qwertyu0952 | 0.6
|
|
qwertyu0953 | 0.6
|
|
qwertyu0954 | 0.6
|
|
qwertyu0955 | 0.6
|
|
qwertyu0956 | 0.6
|
|
qwertyu0957 | 0.6
|
|
qwertyu0958 | 0.6
|
|
qwertyu0959 | 0.6
|
|
qwertyu0960 | 0.6
|
|
qwertyu0961 | 0.6
|
|
qwertyu0962 | 0.6
|
|
qwertyu0963 | 0.6
|
|
qwertyu0964 | 0.6
|
|
qwertyu0965 | 0.6
|
|
qwertyu0966 | 0.6
|
|
qwertyu0967 | 0.6
|
|
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qwertyu1000 | 0.411765
|
|
(1000 rows)
|
|
|
|
select t,similarity(t,'gwertyu0988') as sml from test_trgm where t % 'gwertyu0988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.6
|
|
qwertyu0980 | 0.411765
|
|
qwertyu0981 | 0.411765
|
|
qwertyu0982 | 0.411765
|
|
qwertyu0983 | 0.411765
|
|
qwertyu0984 | 0.411765
|
|
qwertyu0985 | 0.411765
|
|
qwertyu0986 | 0.411765
|
|
qwertyu0987 | 0.411765
|
|
qwertyu0989 | 0.411765
|
|
qwertyu0088 | 0.333333
|
|
qwertyu0098 | 0.333333
|
|
qwertyu0188 | 0.333333
|
|
qwertyu0288 | 0.333333
|
|
qwertyu0388 | 0.333333
|
|
qwertyu0488 | 0.333333
|
|
qwertyu0588 | 0.333333
|
|
qwertyu0688 | 0.333333
|
|
qwertyu0788 | 0.333333
|
|
qwertyu0888 | 0.333333
|
|
qwertyu0900 | 0.333333
|
|
qwertyu0901 | 0.333333
|
|
qwertyu0902 | 0.333333
|
|
qwertyu0903 | 0.333333
|
|
qwertyu0904 | 0.333333
|
|
qwertyu0905 | 0.333333
|
|
qwertyu0906 | 0.333333
|
|
qwertyu0907 | 0.333333
|
|
qwertyu0908 | 0.333333
|
|
qwertyu0909 | 0.333333
|
|
qwertyu0910 | 0.333333
|
|
qwertyu0911 | 0.333333
|
|
qwertyu0912 | 0.333333
|
|
qwertyu0913 | 0.333333
|
|
qwertyu0914 | 0.333333
|
|
qwertyu0915 | 0.333333
|
|
qwertyu0916 | 0.333333
|
|
qwertyu0917 | 0.333333
|
|
qwertyu0918 | 0.333333
|
|
qwertyu0919 | 0.333333
|
|
qwertyu0920 | 0.333333
|
|
qwertyu0921 | 0.333333
|
|
qwertyu0922 | 0.333333
|
|
qwertyu0923 | 0.333333
|
|
qwertyu0924 | 0.333333
|
|
qwertyu0925 | 0.333333
|
|
qwertyu0926 | 0.333333
|
|
qwertyu0927 | 0.333333
|
|
qwertyu0928 | 0.333333
|
|
qwertyu0929 | 0.333333
|
|
qwertyu0930 | 0.333333
|
|
qwertyu0931 | 0.333333
|
|
qwertyu0932 | 0.333333
|
|
qwertyu0933 | 0.333333
|
|
qwertyu0934 | 0.333333
|
|
qwertyu0935 | 0.333333
|
|
qwertyu0936 | 0.333333
|
|
qwertyu0937 | 0.333333
|
|
qwertyu0938 | 0.333333
|
|
qwertyu0939 | 0.333333
|
|
qwertyu0940 | 0.333333
|
|
qwertyu0941 | 0.333333
|
|
qwertyu0942 | 0.333333
|
|
qwertyu0943 | 0.333333
|
|
qwertyu0944 | 0.333333
|
|
qwertyu0945 | 0.333333
|
|
qwertyu0946 | 0.333333
|
|
qwertyu0947 | 0.333333
|
|
qwertyu0948 | 0.333333
|
|
qwertyu0949 | 0.333333
|
|
qwertyu0950 | 0.333333
|
|
qwertyu0951 | 0.333333
|
|
qwertyu0952 | 0.333333
|
|
qwertyu0953 | 0.333333
|
|
qwertyu0954 | 0.333333
|
|
qwertyu0955 | 0.333333
|
|
qwertyu0956 | 0.333333
|
|
qwertyu0957 | 0.333333
|
|
qwertyu0958 | 0.333333
|
|
qwertyu0959 | 0.333333
|
|
qwertyu0960 | 0.333333
|
|
qwertyu0961 | 0.333333
|
|
qwertyu0962 | 0.333333
|
|
qwertyu0963 | 0.333333
|
|
qwertyu0964 | 0.333333
|
|
qwertyu0965 | 0.333333
|
|
qwertyu0966 | 0.333333
|
|
qwertyu0967 | 0.333333
|
|
qwertyu0968 | 0.333333
|
|
qwertyu0969 | 0.333333
|
|
qwertyu0970 | 0.333333
|
|
qwertyu0971 | 0.333333
|
|
qwertyu0972 | 0.333333
|
|
qwertyu0973 | 0.333333
|
|
qwertyu0974 | 0.333333
|
|
qwertyu0975 | 0.333333
|
|
qwertyu0976 | 0.333333
|
|
qwertyu0977 | 0.333333
|
|
qwertyu0978 | 0.333333
|
|
qwertyu0979 | 0.333333
|
|
qwertyu0990 | 0.333333
|
|
qwertyu0991 | 0.333333
|
|
qwertyu0992 | 0.333333
|
|
qwertyu0993 | 0.333333
|
|
qwertyu0994 | 0.333333
|
|
qwertyu0995 | 0.333333
|
|
qwertyu0996 | 0.333333
|
|
qwertyu0997 | 0.333333
|
|
qwertyu0998 | 0.333333
|
|
qwertyu0999 | 0.333333
|
|
(110 rows)
|
|
|
|
select t,similarity(t,'gwertyu1988') as sml from test_trgm where t % 'gwertyu1988' order by sml desc, t;
|
|
t | sml
|
|
-------------+----------
|
|
qwertyu0988 | 0.333333
|
|
(1 row)
|
|
|
|
select count(*) from test_trgm where t ~ '[qwerty]{2}-?[qwerty]{2}';
|
|
count
|
|
-------
|
|
1000
|
|
(1 row)
|
|
|
|
-- check handling of indexquals that generate no searchable conditions
|
|
explain (costs off)
|
|
select count(*) from test_trgm where t like '%99%' and t like '%qwerty%';
|
|
QUERY PLAN
|
|
-----------------------------------------------------------------------------
|
|
Aggregate
|
|
-> Bitmap Heap Scan on test_trgm
|
|
Recheck Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qwerty%'::text))
|
|
-> Bitmap Index Scan on trgm_idx
|
|
Index Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qwerty%'::text))
|
|
(5 rows)
|
|
|
|
select count(*) from test_trgm where t like '%99%' and t like '%qwerty%';
|
|
count
|
|
-------
|
|
19
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select count(*) from test_trgm where t like '%99%' and t like '%qw%';
|
|
QUERY PLAN
|
|
-------------------------------------------------------------------------
|
|
Aggregate
|
|
-> Bitmap Heap Scan on test_trgm
|
|
Recheck Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qw%'::text))
|
|
-> Bitmap Index Scan on trgm_idx
|
|
Index Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qw%'::text))
|
|
(5 rows)
|
|
|
|
select count(*) from test_trgm where t like '%99%' and t like '%qw%';
|
|
count
|
|
-------
|
|
19
|
|
(1 row)
|
|
|
|
-- ensure that pending-list items are handled correctly, too
|
|
create temp table t_test_trgm(t text COLLATE "C");
|
|
create index t_trgm_idx on t_test_trgm using gin (t gin_trgm_ops);
|
|
insert into t_test_trgm values ('qwerty99'), ('qwerty01');
|
|
explain (costs off)
|
|
select count(*) from t_test_trgm where t like '%99%' and t like '%qwerty%';
|
|
QUERY PLAN
|
|
-----------------------------------------------------------------------------
|
|
Aggregate
|
|
-> Bitmap Heap Scan on t_test_trgm
|
|
Recheck Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qwerty%'::text))
|
|
-> Bitmap Index Scan on t_trgm_idx
|
|
Index Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qwerty%'::text))
|
|
(5 rows)
|
|
|
|
select count(*) from t_test_trgm where t like '%99%' and t like '%qwerty%';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select count(*) from t_test_trgm where t like '%99%' and t like '%qw%';
|
|
QUERY PLAN
|
|
-------------------------------------------------------------------------
|
|
Aggregate
|
|
-> Bitmap Heap Scan on t_test_trgm
|
|
Recheck Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qw%'::text))
|
|
-> Bitmap Index Scan on t_trgm_idx
|
|
Index Cond: ((t ~~ '%99%'::text) AND (t ~~ '%qw%'::text))
|
|
(5 rows)
|
|
|
|
select count(*) from t_test_trgm where t like '%99%' and t like '%qw%';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
-- run the same queries with sequential scan to check the results
|
|
set enable_bitmapscan=off;
|
|
set enable_seqscan=on;
|
|
select count(*) from test_trgm where t like '%99%' and t like '%qwerty%';
|
|
count
|
|
-------
|
|
19
|
|
(1 row)
|
|
|
|
select count(*) from test_trgm where t like '%99%' and t like '%qw%';
|
|
count
|
|
-------
|
|
19
|
|
(1 row)
|
|
|
|
select count(*) from t_test_trgm where t like '%99%' and t like '%qwerty%';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
select count(*) from t_test_trgm where t like '%99%' and t like '%qw%';
|
|
count
|
|
-------
|
|
1
|
|
(1 row)
|
|
|
|
reset enable_bitmapscan;
|
|
create table test2(t text COLLATE "C");
|
|
insert into test2 values ('abcdef');
|
|
insert into test2 values ('quark');
|
|
insert into test2 values (' z foo bar');
|
|
insert into test2 values ('/123/-45/');
|
|
insert into test2 values ('line 1');
|
|
insert into test2 values ('%line 2');
|
|
insert into test2 values ('line 3%');
|
|
insert into test2 values ('%line 4%');
|
|
insert into test2 values ('%li%ne 5%');
|
|
insert into test2 values ('li_e 6');
|
|
create index test2_idx_gin on test2 using gin (t gin_trgm_ops);
|
|
set enable_seqscan=off;
|
|
explain (costs off)
|
|
select * from test2 where t like '%BCD%';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Bitmap Heap Scan on test2
|
|
Recheck Cond: (t ~~ '%BCD%'::text)
|
|
-> Bitmap Index Scan on test2_idx_gin
|
|
Index Cond: (t ~~ '%BCD%'::text)
|
|
(4 rows)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t ilike '%BCD%';
|
|
QUERY PLAN
|
|
-------------------------------------------
|
|
Bitmap Heap Scan on test2
|
|
Recheck Cond: (t ~~* '%BCD%'::text)
|
|
-> Bitmap Index Scan on test2_idx_gin
|
|
Index Cond: (t ~~* '%BCD%'::text)
|
|
(4 rows)
|
|
|
|
select * from test2 where t like '%BCD%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t like '%bcd%';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t like E'%\\bcd%';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ilike '%BCD%';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ilike 'qua%';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t like '%z foo bar%';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t like ' z foo%';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
QUERY PLAN
|
|
--------------------------------------------
|
|
Bitmap Heap Scan on test2
|
|
Recheck Cond: (t ~ '[abc]{3}'::text)
|
|
-> Bitmap Index Scan on test2_idx_gin
|
|
Index Cond: (t ~ '[abc]{3}'::text)
|
|
(4 rows)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t ~* 'DEF';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Bitmap Heap Scan on test2
|
|
Recheck Cond: (t ~* 'DEF'::text)
|
|
-> Bitmap Index Scan on test2_idx_gin
|
|
Index Cond: (t ~* 'DEF'::text)
|
|
(4 rows)
|
|
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'a[bc]+d';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ '(abc)*$';
|
|
t
|
|
-------------
|
|
abcdef
|
|
quark
|
|
z foo bar
|
|
/123/-45/
|
|
line 1
|
|
%line 2
|
|
line 3%
|
|
%line 4%
|
|
%li%ne 5%
|
|
li_e 6
|
|
(10 rows)
|
|
|
|
select * from test2 where t ~* 'DEF';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'dEf';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t ~* '^q';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~* '[abc]{3}[def]{3}';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~* 'ab[a-z]{3}';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~* '(^| )qua';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'q.*rk$';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'q';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ '[a-z]{3}';
|
|
t
|
|
-------------
|
|
abcdef
|
|
quark
|
|
z foo bar
|
|
line 1
|
|
%line 2
|
|
line 3%
|
|
%line 4%
|
|
(7 rows)
|
|
|
|
select * from test2 where t ~* '(a{10}|b{10}|c{10}){10}';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t ~ 'z foo bar';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ ' z foo bar';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ ' z foo bar';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ ' z foo';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'qua(?!foo)';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ '/\d+/-\d';
|
|
t
|
|
-----------
|
|
/123/-45/
|
|
(1 row)
|
|
|
|
-- test = operator
|
|
explain (costs off)
|
|
select * from test2 where t = 'abcdef';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Bitmap Heap Scan on test2
|
|
Recheck Cond: (t = 'abcdef'::text)
|
|
-> Bitmap Index Scan on test2_idx_gin
|
|
Index Cond: (t = 'abcdef'::text)
|
|
(4 rows)
|
|
|
|
select * from test2 where t = 'abcdef';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t = '%line%';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Bitmap Heap Scan on test2
|
|
Recheck Cond: (t = '%line%'::text)
|
|
-> Bitmap Index Scan on test2_idx_gin
|
|
Index Cond: (t = '%line%'::text)
|
|
(4 rows)
|
|
|
|
select * from test2 where t = '%line%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = 'li_e 1';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%line 2';
|
|
t
|
|
---------
|
|
%line 2
|
|
(1 row)
|
|
|
|
select * from test2 where t = 'line 3%';
|
|
t
|
|
---------
|
|
line 3%
|
|
(1 row)
|
|
|
|
select * from test2 where t = '%line 3%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%line 4%';
|
|
t
|
|
----------
|
|
%line 4%
|
|
(1 row)
|
|
|
|
select * from test2 where t = '%line 5%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%li_ne 5%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%li%ne 5%';
|
|
t
|
|
-----------
|
|
%li%ne 5%
|
|
(1 row)
|
|
|
|
select * from test2 where t = 'line 6';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = 'li_e 6';
|
|
t
|
|
--------
|
|
li_e 6
|
|
(1 row)
|
|
|
|
drop index test2_idx_gin;
|
|
create index test2_idx_gist on test2 using gist (t gist_trgm_ops);
|
|
set enable_seqscan=off;
|
|
explain (costs off)
|
|
select * from test2 where t like '%BCD%';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Index Scan using test2_idx_gist on test2
|
|
Index Cond: (t ~~ '%BCD%'::text)
|
|
(2 rows)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t ilike '%BCD%';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Index Scan using test2_idx_gist on test2
|
|
Index Cond: (t ~~* '%BCD%'::text)
|
|
(2 rows)
|
|
|
|
select * from test2 where t like '%BCD%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t like '%bcd%';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t like E'%\\bcd%';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ilike '%BCD%';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ilike 'qua%';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t like '%z foo bar%';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t like ' z foo%';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Index Scan using test2_idx_gist on test2
|
|
Index Cond: (t ~ '[abc]{3}'::text)
|
|
(2 rows)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t ~* 'DEF';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Index Scan using test2_idx_gist on test2
|
|
Index Cond: (t ~* 'DEF'::text)
|
|
(2 rows)
|
|
|
|
select * from test2 where t ~ '[abc]{3}';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'a[bc]+d';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ '(abc)*$';
|
|
t
|
|
-------------
|
|
abcdef
|
|
quark
|
|
z foo bar
|
|
/123/-45/
|
|
line 1
|
|
%line 2
|
|
line 3%
|
|
%line 4%
|
|
%li%ne 5%
|
|
li_e 6
|
|
(10 rows)
|
|
|
|
select * from test2 where t ~* 'DEF';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'dEf';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t ~* '^q';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~* '[abc]{3}[def]{3}';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~* 'ab[a-z]{3}';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
select * from test2 where t ~* '(^| )qua';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'q.*rk$';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'q';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ '[a-z]{3}';
|
|
t
|
|
-------------
|
|
abcdef
|
|
quark
|
|
z foo bar
|
|
line 1
|
|
%line 2
|
|
line 3%
|
|
%line 4%
|
|
(7 rows)
|
|
|
|
select * from test2 where t ~* '(a{10}|b{10}|c{10}){10}';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t ~ 'z foo bar';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ ' z foo bar';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ ' z foo bar';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ ' z foo';
|
|
t
|
|
-------------
|
|
z foo bar
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ 'qua(?!foo)';
|
|
t
|
|
-------
|
|
quark
|
|
(1 row)
|
|
|
|
select * from test2 where t ~ '/\d+/-\d';
|
|
t
|
|
-----------
|
|
/123/-45/
|
|
(1 row)
|
|
|
|
-- test = operator
|
|
explain (costs off)
|
|
select * from test2 where t = 'abcdef';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Index Scan using test2_idx_gist on test2
|
|
Index Cond: (t = 'abcdef'::text)
|
|
(2 rows)
|
|
|
|
select * from test2 where t = 'abcdef';
|
|
t
|
|
--------
|
|
abcdef
|
|
(1 row)
|
|
|
|
explain (costs off)
|
|
select * from test2 where t = '%line%';
|
|
QUERY PLAN
|
|
------------------------------------------
|
|
Index Scan using test2_idx_gist on test2
|
|
Index Cond: (t = '%line%'::text)
|
|
(2 rows)
|
|
|
|
select * from test2 where t = '%line%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = 'li_e 1';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%line 2';
|
|
t
|
|
---------
|
|
%line 2
|
|
(1 row)
|
|
|
|
select * from test2 where t = 'line 3%';
|
|
t
|
|
---------
|
|
line 3%
|
|
(1 row)
|
|
|
|
select * from test2 where t = '%line 3%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%line 4%';
|
|
t
|
|
----------
|
|
%line 4%
|
|
(1 row)
|
|
|
|
select * from test2 where t = '%line 5%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%li_ne 5%';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = '%li%ne 5%';
|
|
t
|
|
-----------
|
|
%li%ne 5%
|
|
(1 row)
|
|
|
|
select * from test2 where t = 'line 6';
|
|
t
|
|
---
|
|
(0 rows)
|
|
|
|
select * from test2 where t = 'li_e 6';
|
|
t
|
|
--------
|
|
li_e 6
|
|
(1 row)
|
|
|
|
-- Check similarity threshold (bug #14202)
|
|
CREATE TEMP TABLE restaurants (city text);
|
|
INSERT INTO restaurants SELECT 'Warsaw' FROM generate_series(1, 10000);
|
|
INSERT INTO restaurants SELECT 'Szczecin' FROM generate_series(1, 10000);
|
|
CREATE INDEX ON restaurants USING gist(city gist_trgm_ops);
|
|
-- Similarity of the two names (for reference).
|
|
SELECT similarity('Szczecin', 'Warsaw');
|
|
similarity
|
|
------------
|
|
0
|
|
(1 row)
|
|
|
|
-- Should get only 'Warsaw' for either setting of set_limit.
|
|
EXPLAIN (COSTS OFF)
|
|
SELECT DISTINCT city, similarity(city, 'Warsaw'), show_limit()
|
|
FROM restaurants WHERE city % 'Warsaw';
|
|
QUERY PLAN
|
|
-------------------------------------------------------
|
|
HashAggregate
|
|
Group Key: city, similarity(city, 'Warsaw'::text)
|
|
-> Bitmap Heap Scan on restaurants
|
|
Recheck Cond: (city % 'Warsaw'::text)
|
|
-> Bitmap Index Scan on restaurants_city_idx
|
|
Index Cond: (city % 'Warsaw'::text)
|
|
(6 rows)
|
|
|
|
SELECT set_limit(0.3);
|
|
set_limit
|
|
-----------
|
|
0.3
|
|
(1 row)
|
|
|
|
SELECT DISTINCT city, similarity(city, 'Warsaw'), show_limit()
|
|
FROM restaurants WHERE city % 'Warsaw';
|
|
city | similarity | show_limit
|
|
--------+------------+------------
|
|
Warsaw | 1 | 0.3
|
|
(1 row)
|
|
|
|
SELECT set_limit(0.5);
|
|
set_limit
|
|
-----------
|
|
0.5
|
|
(1 row)
|
|
|
|
SELECT DISTINCT city, similarity(city, 'Warsaw'), show_limit()
|
|
FROM restaurants WHERE city % 'Warsaw';
|
|
city | similarity | show_limit
|
|
--------+------------+------------
|
|
Warsaw | 1 | 0.5
|
|
(1 row)
|
|
|