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8436489c81
This extends GiST's support for nearest-neighbor searches to many of the standard data types. Teodor Sigaev
38 lines
1004 B
SQL
38 lines
1004 B
SQL
-- float8 check
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CREATE TABLE float8tmp (a float8);
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\copy float8tmp from 'data/float8.data'
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SET enable_seqscan=on;
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SELECT count(*) FROM float8tmp WHERE a < -1890.0;
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SELECT count(*) FROM float8tmp WHERE a <= -1890.0;
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SELECT count(*) FROM float8tmp WHERE a = -1890.0;
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SELECT count(*) FROM float8tmp WHERE a >= -1890.0;
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SELECT count(*) FROM float8tmp WHERE a > -1890.0;
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SELECT a, a <-> '-1890.0' FROM float8tmp ORDER BY a <-> '-1890.0' LIMIT 3;
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CREATE INDEX float8idx ON float8tmp USING gist ( a );
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SET enable_seqscan=off;
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SELECT count(*) FROM float8tmp WHERE a < -1890.0::float8;
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SELECT count(*) FROM float8tmp WHERE a <= -1890.0::float8;
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SELECT count(*) FROM float8tmp WHERE a = -1890.0::float8;
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SELECT count(*) FROM float8tmp WHERE a >= -1890.0::float8;
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SELECT count(*) FROM float8tmp WHERE a > -1890.0::float8;
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EXPLAIN (COSTS OFF)
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SELECT a, a <-> '-1890.0' FROM float8tmp ORDER BY a <-> '-1890.0' LIMIT 3;
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SELECT a, a <-> '-1890.0' FROM float8tmp ORDER BY a <-> '-1890.0' LIMIT 3;
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