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9f984ba6d2
Commit 16fa9b2b30 introduced a faster way to build GiST indexes, by
sorting all the data. This commit adds the sortsupport functions needed
to make use of that feature for btree_gist.
Author: Andrey Borodin
Discussion: https://www.postgresql.org/message-id/2F3F7265-0D22-44DB-AD71-8554C743D943@yandex-team.ru
41 lines
1.2 KiB
SQL
41 lines
1.2 KiB
SQL
-- bit check
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CREATE TABLE bittmp (a bit(33));
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\copy bittmp from 'data/bit.data'
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SET enable_seqscan=on;
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SELECT count(*) FROM bittmp WHERE a < '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a <= '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a = '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a >= '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a > '011011000100010111011000110000100';
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SET client_min_messages = DEBUG1;
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CREATE INDEX bitidx ON bittmp USING GIST ( a );
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CREATE INDEX bitidx_b ON bittmp USING GIST ( a ) WITH (buffering=on);
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DROP INDEX bitidx_b;
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RESET client_min_messages;
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SET enable_seqscan=off;
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SELECT count(*) FROM bittmp WHERE a < '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a <= '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a = '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a >= '011011000100010111011000110000100';
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SELECT count(*) FROM bittmp WHERE a > '011011000100010111011000110000100';
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-- Test index-only scans
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SET enable_bitmapscan=off;
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EXPLAIN (COSTS OFF)
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SELECT a FROM bittmp WHERE a BETWEEN '1000000' and '1000001';
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