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postgresql/src/test/regress/expected/tsearch.out
Tom Lane 716ea626a8 Make construct_[md_]array return a valid empty array for zero-size input. 
If construct_array() or construct_md_array() were given a dimension of
zero, they'd produce an array that contains no elements but has positive
dimension.  This violates a general expectation that empty arrays should
have ndims = 0; in particular, while arrays like this print as empty,
they don't compare equal to other empty arrays.

Up to now we've expected callers to avoid making such calls and instead
be careful to call construct_empty_array() if there would be no elements.
But this has always been an easily missed case, and we've repeatedly had to
fix callers to do it right.  In bug #14826, Erwin Brandstetter pointed out
yet another such oversight, in ts_lexize(); and a bit of examination of
other call sites found at least two more with similar issues.  So let's
fix the problem centrally and permanently by changing these two functions
to construct a proper zero-D empty array whenever the array would be empty.

This renders a few explicit calls of construct_empty_array() redundant,
but the only such place I found that really seemed worth changing was in
ExecEvalArrayExpr().

Although this fixes some very old bugs, no back-patch: the problem is
pretty minor and the risk of changing behavior seems to outweigh the
benefit in stable branches.

Discussion: https://postgr.es/m/20170923125723.1448.39412@wrigleys.postgresql.org
Discussion: https://postgr.es/m/20570.1506198383@sss.pgh.pa.us
2017-09-25 11:55:24 -04:00

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--
-- Sanity checks for text search catalogs
--
-- NB: we assume the oidjoins test will have caught any dangling links,
-- that is OID or REGPROC fields that are not zero and do not match some
-- row in the linked-to table. However, if we want to enforce that a link
-- field can't be 0, we have to check it here.
-- Find unexpected zero link entries
SELECT oid, prsname
FROM pg_ts_parser
WHERE prsnamespace = 0 OR prsstart = 0 OR prstoken = 0 OR prsend = 0 OR
-- prsheadline is optional
prslextype = 0;
oid | prsname
-----+---------
(0 rows)
SELECT oid, dictname
FROM pg_ts_dict
WHERE dictnamespace = 0 OR dictowner = 0 OR dicttemplate = 0;
oid | dictname
-----+----------
(0 rows)
SELECT oid, tmplname
FROM pg_ts_template
WHERE tmplnamespace = 0 OR tmpllexize = 0; -- tmplinit is optional
oid | tmplname
-----+----------
(0 rows)
SELECT oid, cfgname
FROM pg_ts_config
WHERE cfgnamespace = 0 OR cfgowner = 0 OR cfgparser = 0;
oid | cfgname
-----+---------
(0 rows)
SELECT mapcfg, maptokentype, mapseqno
FROM pg_ts_config_map
WHERE mapcfg = 0 OR mapdict = 0;
mapcfg | maptokentype | mapseqno
--------+--------------+----------
(0 rows)
-- Look for pg_ts_config_map entries that aren't one of parser's token types
SELECT * FROM
( SELECT oid AS cfgid, (ts_token_type(cfgparser)).tokid AS tokid
FROM pg_ts_config ) AS tt
RIGHT JOIN pg_ts_config_map AS m
ON (tt.cfgid=m.mapcfg AND tt.tokid=m.maptokentype)
WHERE
tt.cfgid IS NULL OR tt.tokid IS NULL;
cfgid | tokid | mapcfg | maptokentype | mapseqno | mapdict
-------+-------+--------+--------------+----------+---------
(0 rows)
-- test basic text search behavior without indexes, then with
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr|qh';
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr&qh';
count
-------
17
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq&yt';
count
-------
6
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq|yt';
count
-------
98
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq&yt)|(wr&qh)';
count
-------
23
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq|yt)&(wr|qh)';
count
-------
39
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'w:*|q:*';
count
-------
494
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ any ('{wr,qh}');
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'no_such_lexeme';
count
-------
0
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '!no_such_lexeme';
count
-------
508
(1 row)
create index wowidx on test_tsvector using gist (a);
SET enable_seqscan=OFF;
SET enable_indexscan=ON;
SET enable_bitmapscan=OFF;
explain (costs off) SELECT count(*) FROM test_tsvector WHERE a @@ 'wr|qh';
QUERY PLAN
-------------------------------------------------------
Aggregate
-> Index Scan using wowidx on test_tsvector
Index Cond: (a @@ '''wr'' | ''qh'''::tsquery)
(3 rows)
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr|qh';
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr&qh';
count
-------
17
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq&yt';
count
-------
6
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq|yt';
count
-------
98
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq&yt)|(wr&qh)';
count
-------
23
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq|yt)&(wr|qh)';
count
-------
39
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'w:*|q:*';
count
-------
494
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ any ('{wr,qh}');
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'no_such_lexeme';
count
-------
0
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '!no_such_lexeme';
count
-------
508
(1 row)
SET enable_indexscan=OFF;
SET enable_bitmapscan=ON;
explain (costs off) SELECT count(*) FROM test_tsvector WHERE a @@ 'wr|qh';
QUERY PLAN
-------------------------------------------------------------
Aggregate
-> Bitmap Heap Scan on test_tsvector
Recheck Cond: (a @@ '''wr'' | ''qh'''::tsquery)
-> Bitmap Index Scan on wowidx
Index Cond: (a @@ '''wr'' | ''qh'''::tsquery)
(5 rows)
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr|qh';
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr&qh';
count
-------
17
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq&yt';
count
-------
6
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq|yt';
count
-------
98
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq&yt)|(wr&qh)';
count
-------
23
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq|yt)&(wr|qh)';
count
-------
39
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'w:*|q:*';
count
-------
494
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ any ('{wr,qh}');
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'no_such_lexeme';
count
-------
0
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '!no_such_lexeme';
count
-------
508
(1 row)
RESET enable_seqscan;
RESET enable_indexscan;
RESET enable_bitmapscan;
DROP INDEX wowidx;
CREATE INDEX wowidx ON test_tsvector USING gin (a);
SET enable_seqscan=OFF;
-- GIN only supports bitmapscan, so no need to test plain indexscan
explain (costs off) SELECT count(*) FROM test_tsvector WHERE a @@ 'wr|qh';
QUERY PLAN
-------------------------------------------------------------
Aggregate
-> Bitmap Heap Scan on test_tsvector
Recheck Cond: (a @@ '''wr'' | ''qh'''::tsquery)
-> Bitmap Index Scan on wowidx
Index Cond: (a @@ '''wr'' | ''qh'''::tsquery)
(5 rows)
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr|qh';
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'wr&qh';
count
-------
17
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq&yt';
count
-------
6
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'eq|yt';
count
-------
98
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq&yt)|(wr&qh)';
count
-------
23
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '(eq|yt)&(wr|qh)';
count
-------
39
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'w:*|q:*';
count
-------
494
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ any ('{wr,qh}');
count
-------
158
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ 'no_such_lexeme';
count
-------
0
(1 row)
SELECT count(*) FROM test_tsvector WHERE a @@ '!no_such_lexeme';
count
-------
508
(1 row)
RESET enable_seqscan;
INSERT INTO test_tsvector VALUES ('???', 'DFG:1A,2B,6C,10 FGH');
SELECT * FROM ts_stat('SELECT a FROM test_tsvector') ORDER BY ndoc DESC, nentry DESC, word LIMIT 10;
word | ndoc | nentry
------+------+--------
qq | 108 | 108
qt | 102 | 102
qe | 100 | 100
qh | 98 | 98
qw | 98 | 98
qa | 97 | 97
ql | 94 | 94
qs | 94 | 94
qi | 92 | 92
qr | 92 | 92
(10 rows)
SELECT * FROM ts_stat('SELECT a FROM test_tsvector', 'AB') ORDER BY ndoc DESC, nentry DESC, word;
word | ndoc | nentry
------+------+--------
DFG | 1 | 2
(1 row)
--dictionaries and to_tsvector
SELECT ts_lexize('english_stem', 'skies');
ts_lexize
-----------
{sky}
(1 row)
SELECT ts_lexize('english_stem', 'identity');
ts_lexize
-----------
{ident}
(1 row)
SELECT * FROM ts_token_type('default');
tokid | alias | description
-------+-----------------+------------------------------------------
1 | asciiword | Word, all ASCII
2 | word | Word, all letters
3 | numword | Word, letters and digits
4 | email | Email address
5 | url | URL
6 | host | Host
7 | sfloat | Scientific notation
8 | version | Version number
9 | hword_numpart | Hyphenated word part, letters and digits
10 | hword_part | Hyphenated word part, all letters
11 | hword_asciipart | Hyphenated word part, all ASCII
12 | blank | Space symbols
13 | tag | XML tag
14 | protocol | Protocol head
15 | numhword | Hyphenated word, letters and digits
16 | asciihword | Hyphenated word, all ASCII
17 | hword | Hyphenated word, all letters
18 | url_path | URL path
19 | file | File or path name
20 | float | Decimal notation
21 | int | Signed integer
22 | uint | Unsigned integer
23 | entity | XML entity
(23 rows)
SELECT * FROM ts_parse('default', '345 qwe@efd.r '' http://www.com/ http://aew.werc.ewr/?ad=qwe&dw 1aew.werc.ewr/?ad=qwe&dw 2aew.werc.ewr http://3aew.werc.ewr/?ad=qwe&dw http://4aew.werc.ewr http://5aew.werc.ewr:8100/? ad=qwe&dw 6aew.werc.ewr:8100/?ad=qwe&dw 7aew.werc.ewr:8100/?ad=qwe&dw=%20%32 +4.0e-10 qwe qwe qwqwe 234.435 455 5.005 teodor@stack.net teodor@123-stack.net 123_teodor@stack.net 123-teodor@stack.net qwe-wer asdf <fr>qwer jf sdjk<we hjwer <werrwe> ewr1> ewri2 <a href="qwe<qwe>">
/usr/local/fff /awdf/dwqe/4325 rewt/ewr wefjn /wqe-324/ewr gist.h gist.h.c gist.c. readline 4.2 4.2. 4.2, readline-4.2 readline-4.2. 234
<i <b> wow < jqw <> qwerty');
tokid | token
-------+--------------------------------------
22 | 345
12 |
1 | qwe
12 | @
19 | efd.r
12 | '
14 | http://
6 | www.com
12 | /
14 | http://
5 | aew.werc.ewr/?ad=qwe&dw
6 | aew.werc.ewr
18 | /?ad=qwe&dw
12 |
5 | 1aew.werc.ewr/?ad=qwe&dw
6 | 1aew.werc.ewr
18 | /?ad=qwe&dw
12 |
6 | 2aew.werc.ewr
12 |
14 | http://
5 | 3aew.werc.ewr/?ad=qwe&dw
6 | 3aew.werc.ewr
18 | /?ad=qwe&dw
12 |
14 | http://
6 | 4aew.werc.ewr
12 |
14 | http://
5 | 5aew.werc.ewr:8100/?
6 | 5aew.werc.ewr:8100
18 | /?
12 |
1 | ad
12 | =
1 | qwe
12 | &
1 | dw
12 |
5 | 6aew.werc.ewr:8100/?ad=qwe&dw
6 | 6aew.werc.ewr:8100
18 | /?ad=qwe&dw
12 |
5 | 7aew.werc.ewr:8100/?ad=qwe&dw=%20%32
6 | 7aew.werc.ewr:8100
18 | /?ad=qwe&dw=%20%32
12 |
7 | +4.0e-10
12 |
1 | qwe
12 |
1 | qwe
12 |
1 | qwqwe
12 |
20 | 234.435
12 |
22 | 455
12 |
20 | 5.005
12 |
4 | teodor@stack.net
12 |
4 | teodor@123-stack.net
12 |
4 | 123_teodor@stack.net
12 |
4 | 123-teodor@stack.net
12 |
16 | qwe-wer
11 | qwe
12 | -
11 | wer
12 |
1 | asdf
12 |
13 | <fr>
1 | qwer
12 |
1 | jf
12 |
1 | sdjk
12 | <
1 | we
12 |
1 | hjwer
12 |
13 | <werrwe>
12 |
3 | ewr1
12 | >
3 | ewri2
12 |
13 | <a href="qwe<qwe>">
12 | +
|
19 | /usr/local/fff
12 |
19 | /awdf/dwqe/4325
12 |
19 | rewt/ewr
12 |
1 | wefjn
12 |
19 | /wqe-324/ewr
12 |
19 | gist.h
12 |
19 | gist.h.c
12 |
19 | gist.c
12 | .
1 | readline
12 |
20 | 4.2
12 |
20 | 4.2
12 | .
20 | 4.2
12 | ,
1 | readline
20 | -4.2
12 |
1 | readline
20 | -4.2
12 | .
22 | 234
12 | +
|
12 | <
1 | i
12 |
13 | <b>
12 |
1 | wow
12 |
12 | <
1 | jqw
12 |
12 | <>
1 | qwerty
(139 rows)
SELECT to_tsvector('english', '345 qwe@efd.r '' http://www.com/ http://aew.werc.ewr/?ad=qwe&dw 1aew.werc.ewr/?ad=qwe&dw 2aew.werc.ewr http://3aew.werc.ewr/?ad=qwe&dw http://4aew.werc.ewr http://5aew.werc.ewr:8100/? ad=qwe&dw 6aew.werc.ewr:8100/?ad=qwe&dw 7aew.werc.ewr:8100/?ad=qwe&dw=%20%32 +4.0e-10 qwe qwe qwqwe 234.435 455 5.005 teodor@stack.net teodor@123-stack.net 123_teodor@stack.net 123-teodor@stack.net qwe-wer asdf <fr>qwer jf sdjk<we hjwer <werrwe> ewr1> ewri2 <a href="qwe<qwe>">
/usr/local/fff /awdf/dwqe/4325 rewt/ewr wefjn /wqe-324/ewr gist.h gist.h.c gist.c. readline 4.2 4.2. 4.2, readline-4.2 readline-4.2. 234
<i <b> wow < jqw <> qwerty');
to_tsvector
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
'+4.0e-10':28 '-4.2':63,65 '/?':18 '/?ad=qwe&dw':7,10,14,24 '/?ad=qwe&dw=%20%32':27 '/awdf/dwqe/4325':51 '/usr/local/fff':50 '/wqe-324/ewr':54 '123-teodor@stack.net':38 '123_teodor@stack.net':37 '1aew.werc.ewr':9 '1aew.werc.ewr/?ad=qwe&dw':8 '234':66 '234.435':32 '2aew.werc.ewr':11 '345':1 '3aew.werc.ewr':13 '3aew.werc.ewr/?ad=qwe&dw':12 '4.2':59,60,61 '455':33 '4aew.werc.ewr':15 '5.005':34 '5aew.werc.ewr:8100':17 '5aew.werc.ewr:8100/?':16 '6aew.werc.ewr:8100':23 '6aew.werc.ewr:8100/?ad=qwe&dw':22 '7aew.werc.ewr:8100':26 '7aew.werc.ewr:8100/?ad=qwe&dw=%20%32':25 'ad':19 'aew.werc.ewr':6 'aew.werc.ewr/?ad=qwe&dw':5 'asdf':42 'dw':21 'efd.r':3 'ewr1':48 'ewri2':49 'gist.c':57 'gist.h':55 'gist.h.c':56 'hjwer':47 'jf':44 'jqw':69 'qwe':2,20,29,30,40 'qwe-wer':39 'qwer':43 'qwerti':70 'qwqwe':31 'readlin':58,62,64 'rewt/ewr':52 'sdjk':45 'teodor@123-stack.net':36 'teodor@stack.net':35 'wefjn':53 'wer':41 'wow':68 'www.com':4
(1 row)
SELECT length(to_tsvector('english', '345 qwe@efd.r '' http://www.com/ http://aew.werc.ewr/?ad=qwe&dw 1aew.werc.ewr/?ad=qwe&dw 2aew.werc.ewr http://3aew.werc.ewr/?ad=qwe&dw http://4aew.werc.ewr http://5aew.werc.ewr:8100/? ad=qwe&dw 6aew.werc.ewr:8100/?ad=qwe&dw 7aew.werc.ewr:8100/?ad=qwe&dw=%20%32 +4.0e-10 qwe qwe qwqwe 234.435 455 5.005 teodor@stack.net teodor@123-stack.net 123_teodor@stack.net 123-teodor@stack.net qwe-wer asdf <fr>qwer jf sdjk<we hjwer <werrwe> ewr1> ewri2 <a href="qwe<qwe>">
/usr/local/fff /awdf/dwqe/4325 rewt/ewr wefjn /wqe-324/ewr gist.h gist.h.c gist.c. readline 4.2 4.2. 4.2, readline-4.2 readline-4.2. 234
<i <b> wow < jqw <> qwerty'));
length
--------
56
(1 row)
-- ts_debug
SELECT * from ts_debug('english', '<myns:foo-bar_baz.blurfl>abc&nm1;def&#xa9;ghi&#245;jkl</myns:foo-bar_baz.blurfl>');
alias | description | token | dictionaries | dictionary | lexemes
-----------+-----------------+----------------------------+----------------+--------------+---------
tag | XML tag | <myns:foo-bar_baz.blurfl> | {} | |
asciiword | Word, all ASCII | abc | {english_stem} | english_stem | {abc}
entity | XML entity | &nm1; | {} | |
asciiword | Word, all ASCII | def | {english_stem} | english_stem | {def}
entity | XML entity | &#xa9; | {} | |
asciiword | Word, all ASCII | ghi | {english_stem} | english_stem | {ghi}
entity | XML entity | &#245; | {} | |
asciiword | Word, all ASCII | jkl | {english_stem} | english_stem | {jkl}
tag | XML tag | </myns:foo-bar_baz.blurfl> | {} | |
(9 rows)
-- check parsing of URLs
SELECT * from ts_debug('english', 'http://www.harewoodsolutions.co.uk/press.aspx</span>');
alias | description | token | dictionaries | dictionary | lexemes
----------+---------------+----------------------------------------+--------------+------------+------------------------------------------
protocol | Protocol head | http:// | {} | |
url | URL | www.harewoodsolutions.co.uk/press.aspx | {simple} | simple | {www.harewoodsolutions.co.uk/press.aspx}
host | Host | www.harewoodsolutions.co.uk | {simple} | simple | {www.harewoodsolutions.co.uk}
url_path | URL path | /press.aspx | {simple} | simple | {/press.aspx}
tag | XML tag | </span> | {} | |
(5 rows)
SELECT * from ts_debug('english', 'http://aew.wer0c.ewr/id?ad=qwe&dw<span>');
alias | description | token | dictionaries | dictionary | lexemes
----------+---------------+----------------------------+--------------+------------+------------------------------
protocol | Protocol head | http:// | {} | |
url | URL | aew.wer0c.ewr/id?ad=qwe&dw | {simple} | simple | {aew.wer0c.ewr/id?ad=qwe&dw}
host | Host | aew.wer0c.ewr | {simple} | simple | {aew.wer0c.ewr}
url_path | URL path | /id?ad=qwe&dw | {simple} | simple | {/id?ad=qwe&dw}
tag | XML tag | <span> | {} | |
(5 rows)
SELECT * from ts_debug('english', 'http://5aew.werc.ewr:8100/?');
alias | description | token | dictionaries | dictionary | lexemes
----------+---------------+----------------------+--------------+------------+------------------------
protocol | Protocol head | http:// | {} | |
url | URL | 5aew.werc.ewr:8100/? | {simple} | simple | {5aew.werc.ewr:8100/?}
host | Host | 5aew.werc.ewr:8100 | {simple} | simple | {5aew.werc.ewr:8100}
url_path | URL path | /? | {simple} | simple | {/?}
(4 rows)
SELECT * from ts_debug('english', '5aew.werc.ewr:8100/?xx');
alias | description | token | dictionaries | dictionary | lexemes
----------+-------------+------------------------+--------------+------------+--------------------------
url | URL | 5aew.werc.ewr:8100/?xx | {simple} | simple | {5aew.werc.ewr:8100/?xx}
host | Host | 5aew.werc.ewr:8100 | {simple} | simple | {5aew.werc.ewr:8100}
url_path | URL path | /?xx | {simple} | simple | {/?xx}
(3 rows)
SELECT token, alias,
dictionaries, dictionaries is null as dnull, array_dims(dictionaries) as ddims,
lexemes, lexemes is null as lnull, array_dims(lexemes) as ldims
from ts_debug('english', 'a title');
token | alias | dictionaries | dnull | ddims | lexemes | lnull | ldims
-------+-----------+----------------+-------+-------+---------+-------+-------
a | asciiword | {english_stem} | f | [1:1] | {} | f |
| blank | {} | f | | | t |
title | asciiword | {english_stem} | f | [1:1] | {titl} | f | [1:1]
(3 rows)
-- to_tsquery
SELECT to_tsquery('english', 'qwe & sKies ');
to_tsquery
---------------
'qwe' & 'sky'
(1 row)
SELECT to_tsquery('simple', 'qwe & sKies ');
to_tsquery
-----------------
'qwe' & 'skies'
(1 row)
SELECT to_tsquery('english', '''the wether'':dc & '' sKies '':BC ');
to_tsquery
------------------------
'wether':CD & 'sky':BC
(1 row)
SELECT to_tsquery('english', 'asd&(and|fghj)');
to_tsquery
----------------
'asd' & 'fghj'
(1 row)
SELECT to_tsquery('english', '(asd&and)|fghj');
to_tsquery
----------------
'asd' | 'fghj'
(1 row)
SELECT to_tsquery('english', '(asd&!and)|fghj');
to_tsquery
----------------
'asd' | 'fghj'
(1 row)
SELECT to_tsquery('english', '(the|and&(i&1))&fghj');
to_tsquery
--------------
'1' & 'fghj'
(1 row)
SELECT plainto_tsquery('english', 'the and z 1))& fghj');
plainto_tsquery
--------------------
'z' & '1' & 'fghj'
(1 row)
SELECT plainto_tsquery('english', 'foo bar') && plainto_tsquery('english', 'asd');
?column?
-----------------------
'foo' & 'bar' & 'asd'
(1 row)
SELECT plainto_tsquery('english', 'foo bar') || plainto_tsquery('english', 'asd fg');
?column?
------------------------------
'foo' & 'bar' | 'asd' & 'fg'
(1 row)
SELECT plainto_tsquery('english', 'foo bar') || !!plainto_tsquery('english', 'asd fg');
?column?
-----------------------------------
'foo' & 'bar' | !( 'asd' & 'fg' )
(1 row)
SELECT plainto_tsquery('english', 'foo bar') && 'asd | fg';
?column?
----------------------------------
'foo' & 'bar' & ( 'asd' | 'fg' )
(1 row)
-- Check stop word deletion, a and s are stop-words
SELECT to_tsquery('english', '!(a & !b) & c');
to_tsquery
-------------
!!'b' & 'c'
(1 row)
SELECT to_tsquery('english', '!(a & !b)');
to_tsquery
------------
!!'b'
(1 row)
SELECT to_tsquery('english', '(1 <-> 2) <-> a');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '(1 <-> a) <-> 2');
to_tsquery
-------------
'1' <2> '2'
(1 row)
SELECT to_tsquery('english', '(a <-> 1) <-> 2');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', 'a <-> (1 <-> 2)');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '1 <-> (a <-> 2)');
to_tsquery
-------------
'1' <2> '2'
(1 row)
SELECT to_tsquery('english', '1 <-> (2 <-> a)');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '(1 <-> 2) <3> a');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '(1 <-> a) <3> 2');
to_tsquery
-------------
'1' <4> '2'
(1 row)
SELECT to_tsquery('english', '(a <-> 1) <3> 2');
to_tsquery
-------------
'1' <3> '2'
(1 row)
SELECT to_tsquery('english', 'a <3> (1 <-> 2)');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '1 <3> (a <-> 2)');
to_tsquery
-------------
'1' <4> '2'
(1 row)
SELECT to_tsquery('english', '1 <3> (2 <-> a)');
to_tsquery
-------------
'1' <3> '2'
(1 row)
SELECT to_tsquery('english', '(1 <3> 2) <-> a');
to_tsquery
-------------
'1' <3> '2'
(1 row)
SELECT to_tsquery('english', '(1 <3> a) <-> 2');
to_tsquery
-------------
'1' <4> '2'
(1 row)
SELECT to_tsquery('english', '(a <3> 1) <-> 2');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', 'a <-> (1 <3> 2)');
to_tsquery
-------------
'1' <3> '2'
(1 row)
SELECT to_tsquery('english', '1 <-> (a <3> 2)');
to_tsquery
-------------
'1' <4> '2'
(1 row)
SELECT to_tsquery('english', '1 <-> (2 <3> a)');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '((a <-> 1) <-> 2) <-> s');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '(2 <-> (a <-> 1)) <-> s');
to_tsquery
-------------
'2' <2> '1'
(1 row)
SELECT to_tsquery('english', '((1 <-> a) <-> 2) <-> s');
to_tsquery
-------------
'1' <2> '2'
(1 row)
SELECT to_tsquery('english', '(2 <-> (1 <-> a)) <-> s');
to_tsquery
-------------
'2' <-> '1'
(1 row)
SELECT to_tsquery('english', 's <-> ((a <-> 1) <-> 2)');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', 's <-> (2 <-> (a <-> 1))');
to_tsquery
-------------
'2' <2> '1'
(1 row)
SELECT to_tsquery('english', 's <-> ((1 <-> a) <-> 2)');
to_tsquery
-------------
'1' <2> '2'
(1 row)
SELECT to_tsquery('english', 's <-> (2 <-> (1 <-> a))');
to_tsquery
-------------
'2' <-> '1'
(1 row)
SELECT to_tsquery('english', '((a <-> 1) <-> s) <-> 2');
to_tsquery
-------------
'1' <2> '2'
(1 row)
SELECT to_tsquery('english', '(s <-> (a <-> 1)) <-> 2');
to_tsquery
-------------
'1' <-> '2'
(1 row)
SELECT to_tsquery('english', '((1 <-> a) <-> s) <-> 2');
to_tsquery
-------------
'1' <3> '2'
(1 row)
SELECT to_tsquery('english', '(s <-> (1 <-> a)) <-> 2');
to_tsquery
-------------
'1' <2> '2'
(1 row)
SELECT to_tsquery('english', '2 <-> ((a <-> 1) <-> s)');
to_tsquery
-------------
'2' <2> '1'
(1 row)
SELECT to_tsquery('english', '2 <-> (s <-> (a <-> 1))');
to_tsquery
-------------
'2' <3> '1'
(1 row)
SELECT to_tsquery('english', '2 <-> ((1 <-> a) <-> s)');
to_tsquery
-------------
'2' <-> '1'
(1 row)
SELECT to_tsquery('english', '2 <-> (s <-> (1 <-> a))');
to_tsquery
-------------
'2' <2> '1'
(1 row)
SELECT to_tsquery('english', 'foo <-> (a <-> (the <-> bar))');
to_tsquery
-----------------
'foo' <3> 'bar'
(1 row)
SELECT to_tsquery('english', '((foo <-> a) <-> the) <-> bar');
to_tsquery
-----------------
'foo' <3> 'bar'
(1 row)
SELECT to_tsquery('english', 'foo <-> a <-> the <-> bar');
to_tsquery
-----------------
'foo' <3> 'bar'
(1 row)
SELECT phraseto_tsquery('english', 'PostgreSQL can be extended by the user in many ways');
phraseto_tsquery
-----------------------------------------------------------
'postgresql' <3> 'extend' <3> 'user' <2> 'mani' <-> 'way'
(1 row)
SELECT ts_rank_cd(to_tsvector('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
'), to_tsquery('english', 'paint&water'));
ts_rank_cd
------------
0.05
(1 row)
SELECT ts_rank_cd(to_tsvector('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
'), to_tsquery('english', 'breath&motion&water'));
ts_rank_cd
------------
0.00833333
(1 row)
SELECT ts_rank_cd(to_tsvector('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
'), to_tsquery('english', 'ocean'));
ts_rank_cd
------------
0.1
(1 row)
SELECT ts_rank_cd(to_tsvector('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
'), to_tsquery('english', 'painted <-> Ship'));
ts_rank_cd
------------
0.1
(1 row)
SELECT ts_rank_cd(strip(to_tsvector('both stripped')),
to_tsquery('both & stripped'));
ts_rank_cd
------------
0
(1 row)
SELECT ts_rank_cd(to_tsvector('unstripped') || strip(to_tsvector('stripped')),
to_tsquery('unstripped & stripped'));
ts_rank_cd
------------
0
(1 row)
--headline tests
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', to_tsquery('english', 'paint&water'));
ts_headline
-----------------------------------------
<b>painted</b> Ocean. +
<b>Water</b>, <b>water</b>, every where+
And all the boards did shrink; +
<b>Water</b>, <b>water</b>, every
(1 row)
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', to_tsquery('english', 'breath&motion&water'));
ts_headline
----------------------------------
<b>breath</b> nor <b>motion</b>,+
As idle as a painted Ship +
Upon a painted Ocean. +
<b>Water</b>, <b>water</b>
(1 row)
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', to_tsquery('english', 'ocean'));
ts_headline
----------------------------------
<b>Ocean</b>. +
Water, water, every where +
And all the boards did shrink;+
Water, water, every where
(1 row)
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', phraseto_tsquery('english', 'painted Ocean'));
ts_headline
----------------------------------
<b>painted</b> <b>Ocean</b>. +
Water, water, every where +
And all the boards did shrink;+
Water, water, every
(1 row)
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', phraseto_tsquery('english', 'idle as a painted Ship'));
ts_headline
---------------------------------------------
<b>idle</b> as a <b>painted</b> <b>Ship</b>+
Upon a <b>painted</b> Ocean. +
Water, water, every where +
And all the boards
(1 row)
SELECT ts_headline('english', '
<html>
<!-- some comment -->
<body>
Sea view wow <u>foo bar</u> <i>qq</i>
<a href="http://www.google.com/foo.bar.html" target="_blank">YES &nbsp;</a>
ff-bg
<script>
document.write(15);
</script>
</body>
</html>',
to_tsquery('english', 'sea&foo'), 'HighlightAll=true');
ts_headline
-----------------------------------------------------------------------------
+
<html> +
<!-- some comment --> +
<body> +
<b>Sea</b> view wow <u><b>foo</b> bar</u> <i>qq</i> +
<a href="http://www.google.com/foo.bar.html" target="_blank">YES &nbsp;</a>+
ff-bg +
<script> +
document.write(15); +
</script> +
</body> +
</html>
(1 row)
SELECT ts_headline('simple', '1 2 3 1 3'::text, '1 <-> 3', 'MaxWords=2, MinWords=1');
ts_headline
-------------------
<b>1</b> <b>3</b>
(1 row)
SELECT ts_headline('simple', '1 2 3 1 3'::text, '1 & 3', 'MaxWords=4, MinWords=1');
ts_headline
------------------------------
<b>1</b> 2 <b>3</b> <b>1</b>
(1 row)
SELECT ts_headline('simple', '1 2 3 1 3'::text, '1 <-> 3', 'MaxWords=4, MinWords=1');
ts_headline
-------------------
<b>1</b> <b>3</b>
(1 row)
--Check if headline fragments work
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', to_tsquery('english', 'ocean'), 'MaxFragments=1');
ts_headline
------------------------------------
after day, +
We stuck, nor breath nor motion,+
As idle as a painted Ship +
Upon a painted <b>Ocean</b>. +
Water, water, every where +
And all the boards did shrink; +
Water, water, every where, +
Nor any drop
(1 row)
--Check if more than one fragments are displayed
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', to_tsquery('english', 'Coleridge & stuck'), 'MaxFragments=2');
ts_headline
----------------------------------------------
after day, day after day, +
We <b>stuck</b>, nor breath nor motion, +
As idle as a painted Ship +
Upon a painted Ocean. +
Water, water, every where +
And all the boards did shrink; +
Water, water, every where ... drop to drink.+
S. T. <b>Coleridge</b>
(1 row)
--Fragments when there all query words are not in the document
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', to_tsquery('english', 'ocean & seahorse'), 'MaxFragments=1');
ts_headline
------------------------------------
+
Day after day, day after day, +
We stuck, nor breath nor motion,+
As idle as
(1 row)
--FragmentDelimiter option
SELECT ts_headline('english', '
Day after day, day after day,
We stuck, nor breath nor motion,
As idle as a painted Ship
Upon a painted Ocean.
Water, water, every where
And all the boards did shrink;
Water, water, every where,
Nor any drop to drink.
S. T. Coleridge (1772-1834)
', to_tsquery('english', 'Coleridge & stuck'), 'MaxFragments=2,FragmentDelimiter=***');
ts_headline
--------------------------------------------
after day, day after day, +
We <b>stuck</b>, nor breath nor motion, +
As idle as a painted Ship +
Upon a painted Ocean. +
Water, water, every where +
And all the boards did shrink; +
Water, water, every where***drop to drink.+
S. T. <b>Coleridge</b>
(1 row)
--Rewrite sub system
CREATE TABLE test_tsquery (txtkeyword TEXT, txtsample TEXT);
\set ECHO none
ALTER TABLE test_tsquery ADD COLUMN keyword tsquery;
UPDATE test_tsquery SET keyword = to_tsquery('english', txtkeyword);
ALTER TABLE test_tsquery ADD COLUMN sample tsquery;
UPDATE test_tsquery SET sample = to_tsquery('english', txtsample::text);
SELECT COUNT(*) FROM test_tsquery WHERE keyword < 'new & york';
count
-------
2
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword <= 'new & york';
count
-------
3
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword = 'new & york';
count
-------
1
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword >= 'new & york';
count
-------
4
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword > 'new & york';
count
-------
3
(1 row)
CREATE UNIQUE INDEX bt_tsq ON test_tsquery (keyword);
SET enable_seqscan=OFF;
SELECT COUNT(*) FROM test_tsquery WHERE keyword < 'new & york';
count
-------
2
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword <= 'new & york';
count
-------
3
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword = 'new & york';
count
-------
1
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword >= 'new & york';
count
-------
4
(1 row)
SELECT COUNT(*) FROM test_tsquery WHERE keyword > 'new & york';
count
-------
3
(1 row)
RESET enable_seqscan;
SELECT ts_rewrite('foo & bar & qq & new & york', 'new & york'::tsquery, 'big & apple | nyc | new & york & city');
ts_rewrite
------------------------------------------------------------------------------
'foo' & 'bar' & 'qq' & ( 'city' & 'new' & 'york' | 'nyc' | 'big' & 'apple' )
(1 row)
SELECT ts_rewrite(ts_rewrite('new & !york ', 'york', '!jersey'),
'jersey', 'mexico');
ts_rewrite
--------------------
'new' & !!'mexico'
(1 row)
SELECT ts_rewrite('moscow', 'SELECT keyword, sample FROM test_tsquery'::text );
ts_rewrite
---------------------
'moskva' | 'moscow'
(1 row)
SELECT ts_rewrite('moscow & hotel', 'SELECT keyword, sample FROM test_tsquery'::text );
ts_rewrite
-----------------------------------
'hotel' & ( 'moskva' | 'moscow' )
(1 row)
SELECT ts_rewrite('bar & new & qq & foo & york', 'SELECT keyword, sample FROM test_tsquery'::text );
ts_rewrite
---------------------------------------------------------------------------------
'citi' & 'foo' & ( 'bar' | 'qq' ) & ( 'nyc' | 'big' & 'appl' | 'new' & 'york' )
(1 row)
SELECT ts_rewrite( 'moscow', 'SELECT keyword, sample FROM test_tsquery');
ts_rewrite
---------------------
'moskva' | 'moscow'
(1 row)
SELECT ts_rewrite( 'moscow & hotel', 'SELECT keyword, sample FROM test_tsquery');
ts_rewrite
-----------------------------------
'hotel' & ( 'moskva' | 'moscow' )
(1 row)
SELECT ts_rewrite( 'bar & new & qq & foo & york', 'SELECT keyword, sample FROM test_tsquery');
ts_rewrite
---------------------------------------------------------------------------------
'citi' & 'foo' & ( 'bar' | 'qq' ) & ( 'nyc' | 'big' & 'appl' | 'new' & 'york' )
(1 row)
SELECT ts_rewrite('1 & (2 <-> 3)', 'SELECT keyword, sample FROM test_tsquery'::text );
ts_rewrite
-------------
'2' <-> '4'
(1 row)
SELECT ts_rewrite('1 & (2 <2> 3)', 'SELECT keyword, sample FROM test_tsquery'::text );
ts_rewrite
-------------------
'1' & '2' <2> '3'
(1 row)
SELECT ts_rewrite('5 <-> (1 & (2 <-> 3))', 'SELECT keyword, sample FROM test_tsquery'::text );
ts_rewrite
-------------------------
'5' <-> ( '2' <-> '4' )
(1 row)
SELECT ts_rewrite('5 <-> (6 | 8)', 'SELECT keyword, sample FROM test_tsquery'::text );
ts_rewrite
-----------------------
'5' <-> ( '6' | '8' )
(1 row)
-- Check empty substitution
SELECT ts_rewrite(to_tsquery('5 & (6 | 5)'), to_tsquery('5'), to_tsquery(''));
NOTICE: text-search query doesn't contain lexemes: ""
ts_rewrite
------------
'6'
(1 row)
SELECT ts_rewrite(to_tsquery('!5'), to_tsquery('5'), to_tsquery(''));
NOTICE: text-search query doesn't contain lexemes: ""
ts_rewrite
------------
(1 row)
SELECT keyword FROM test_tsquery WHERE keyword @> 'new';
keyword
----------------
'new' & 'york'
(1 row)
SELECT keyword FROM test_tsquery WHERE keyword @> 'moscow';
keyword
----------
'moscow'
(1 row)
SELECT keyword FROM test_tsquery WHERE keyword <@ 'new';
keyword
---------
(0 rows)
SELECT keyword FROM test_tsquery WHERE keyword <@ 'moscow';
keyword
----------
'moscow'
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow') AS query;
ts_rewrite
---------------------
'moskva' | 'moscow'
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow & hotel') AS query;
ts_rewrite
-----------------------------------
'hotel' & ( 'moskva' | 'moscow' )
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'bar & new & qq & foo & york') AS query;
ts_rewrite
---------------------------------------------------------------------------------
'citi' & 'foo' & ( 'bar' | 'qq' ) & ( 'nyc' | 'big' & 'appl' | 'new' & 'york' )
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow') AS query;
ts_rewrite
---------------------
'moskva' | 'moscow'
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow & hotel') AS query;
ts_rewrite
-----------------------------------
'hotel' & ( 'moskva' | 'moscow' )
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'bar & new & qq & foo & york') AS query;
ts_rewrite
---------------------------------------------------------------------------------
'citi' & 'foo' & ( 'bar' | 'qq' ) & ( 'nyc' | 'big' & 'appl' | 'new' & 'york' )
(1 row)
CREATE INDEX qq ON test_tsquery USING gist (keyword tsquery_ops);
SET enable_seqscan=OFF;
SELECT keyword FROM test_tsquery WHERE keyword @> 'new';
keyword
----------------
'new' & 'york'
(1 row)
SELECT keyword FROM test_tsquery WHERE keyword @> 'moscow';
keyword
----------
'moscow'
(1 row)
SELECT keyword FROM test_tsquery WHERE keyword <@ 'new';
keyword
---------
(0 rows)
SELECT keyword FROM test_tsquery WHERE keyword <@ 'moscow';
keyword
----------
'moscow'
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow') AS query;
ts_rewrite
---------------------
'moskva' | 'moscow'
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow & hotel') AS query;
ts_rewrite
-----------------------------------
'hotel' & ( 'moskva' | 'moscow' )
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'bar & new & qq & foo & york') AS query;
ts_rewrite
---------------------------------------------------------------------------------
'citi' & 'foo' & ( 'bar' | 'qq' ) & ( 'nyc' | 'big' & 'appl' | 'new' & 'york' )
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow') AS query;
ts_rewrite
---------------------
'moskva' | 'moscow'
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'moscow & hotel') AS query;
ts_rewrite
-----------------------------------
'hotel' & ( 'moskva' | 'moscow' )
(1 row)
SELECT ts_rewrite( query, 'SELECT keyword, sample FROM test_tsquery' ) FROM to_tsquery('english', 'bar & new & qq & foo & york') AS query;
ts_rewrite
---------------------------------------------------------------------------------
'citi' & 'foo' & ( 'bar' | 'qq' ) & ( 'nyc' | 'big' & 'appl' | 'new' & 'york' )
(1 row)
SELECT ts_rewrite(tsquery_phrase('foo', 'foo'), 'foo', 'bar | baz');
ts_rewrite
-----------------------------------------
( 'bar' | 'baz' ) <-> ( 'bar' | 'baz' )
(1 row)
SELECT to_tsvector('foo bar') @@
ts_rewrite(tsquery_phrase('foo', 'foo'), 'foo', 'bar | baz');
?column?
----------
f
(1 row)
SELECT to_tsvector('bar baz') @@
ts_rewrite(tsquery_phrase('foo', 'foo'), 'foo', 'bar | baz');
?column?
----------
t
(1 row)
RESET enable_seqscan;
--test GUC
SET default_text_search_config=simple;
SELECT to_tsvector('SKIES My booKs');
to_tsvector
----------------------------
'books':3 'my':2 'skies':1
(1 row)
SELECT plainto_tsquery('SKIES My booKs');
plainto_tsquery
--------------------------
'skies' & 'my' & 'books'
(1 row)
SELECT to_tsquery('SKIES & My | booKs');
to_tsquery
--------------------------
'skies' & 'my' | 'books'
(1 row)
SET default_text_search_config=english;
SELECT to_tsvector('SKIES My booKs');
to_tsvector
------------------
'book':3 'sky':1
(1 row)
SELECT plainto_tsquery('SKIES My booKs');
plainto_tsquery
-----------------
'sky' & 'book'
(1 row)
SELECT to_tsquery('SKIES & My | booKs');
to_tsquery
----------------
'sky' | 'book'
(1 row)
--trigger
CREATE TRIGGER tsvectorupdate
BEFORE UPDATE OR INSERT ON test_tsvector
FOR EACH ROW EXECUTE PROCEDURE tsvector_update_trigger(a, 'pg_catalog.english', t);
SELECT count(*) FROM test_tsvector WHERE a @@ to_tsquery('345&qwerty');
count
-------
0
(1 row)
INSERT INTO test_tsvector (t) VALUES ('345 qwerty');
SELECT count(*) FROM test_tsvector WHERE a @@ to_tsquery('345&qwerty');
count
-------
1
(1 row)
UPDATE test_tsvector SET t = null WHERE t = '345 qwerty';
SELECT count(*) FROM test_tsvector WHERE a @@ to_tsquery('345&qwerty');
count
-------
0
(1 row)
INSERT INTO test_tsvector (t) VALUES ('345 qwerty');
SELECT count(*) FROM test_tsvector WHERE a @@ to_tsquery('345&qwerty');
count
-------
1
(1 row)
-- test finding items in GIN's pending list
create temp table pendtest (ts tsvector);
create index pendtest_idx on pendtest using gin(ts);
insert into pendtest values (to_tsvector('Lore ipsam'));
insert into pendtest values (to_tsvector('Lore ipsum'));
select * from pendtest where 'ipsu:*'::tsquery @@ ts;
ts
--------------------
'ipsum':2 'lore':1
(1 row)
select * from pendtest where 'ipsa:*'::tsquery @@ ts;
ts
--------------------
'ipsam':2 'lore':1
(1 row)
select * from pendtest where 'ips:*'::tsquery @@ ts;
ts
--------------------
'ipsam':2 'lore':1
'ipsum':2 'lore':1
(2 rows)
select * from pendtest where 'ipt:*'::tsquery @@ ts;
ts
----
(0 rows)
select * from pendtest where 'ipi:*'::tsquery @@ ts;
ts
----
(0 rows)
--check OP_PHRASE on index
create temp table phrase_index_test(fts tsvector);
insert into phrase_index_test values ('A fat cat has just eaten a rat.');
insert into phrase_index_test values (to_tsvector('english', 'A fat cat has just eaten a rat.'));
create index phrase_index_test_idx on phrase_index_test using gin(fts);
set enable_seqscan = off;
select * from phrase_index_test where fts @@ phraseto_tsquery('english', 'fat cat');
fts
-----------------------------------
'cat':3 'eaten':6 'fat':2 'rat':8
(1 row)
set enable_seqscan = on;
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