postgresql/contrib/btree_gist/sql/int2.sql
Tom Lane 8436489c81 Add KNNGIST support to contrib/btree_gist.
This extends GiST's support for nearest-neighbor searches to many of the
standard data types.

Teodor Sigaev
2011-03-02 14:44:33 -05:00

38 lines
890 B
SQL

-- int2 check
CREATE TABLE int2tmp (a int2);
\copy int2tmp from 'data/int2.data'
SET enable_seqscan=on;
SELECT count(*) FROM int2tmp WHERE a < 237;
SELECT count(*) FROM int2tmp WHERE a <= 237;
SELECT count(*) FROM int2tmp WHERE a = 237;
SELECT count(*) FROM int2tmp WHERE a >= 237;
SELECT count(*) FROM int2tmp WHERE a > 237;
SELECT a, a <-> '237' FROM int2tmp ORDER BY a <-> '237' LIMIT 3;
CREATE INDEX int2idx ON int2tmp USING gist ( a );
SET enable_seqscan=off;
SELECT count(*) FROM int2tmp WHERE a < 237::int2;
SELECT count(*) FROM int2tmp WHERE a <= 237::int2;
SELECT count(*) FROM int2tmp WHERE a = 237::int2;
SELECT count(*) FROM int2tmp WHERE a >= 237::int2;
SELECT count(*) FROM int2tmp WHERE a > 237::int2;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '237' FROM int2tmp ORDER BY a <-> '237' LIMIT 3;
SELECT a, a <-> '237' FROM int2tmp ORDER BY a <-> '237' LIMIT 3;