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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
1022 B
SQL
38 lines
1022 B
SQL
-- date check
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CREATE TABLE datetmp (a date);
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\copy datetmp from 'data/date.data'
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SET enable_seqscan=on;
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SELECT count(*) FROM datetmp WHERE a < '2001-02-13';
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SELECT count(*) FROM datetmp WHERE a <= '2001-02-13';
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SELECT count(*) FROM datetmp WHERE a = '2001-02-13';
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SELECT count(*) FROM datetmp WHERE a >= '2001-02-13';
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SELECT count(*) FROM datetmp WHERE a > '2001-02-13';
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SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3;
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CREATE INDEX dateidx ON datetmp USING gist ( a );
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SET enable_seqscan=off;
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SELECT count(*) FROM datetmp WHERE a < '2001-02-13'::date;
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SELECT count(*) FROM datetmp WHERE a <= '2001-02-13'::date;
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SELECT count(*) FROM datetmp WHERE a = '2001-02-13'::date;
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SELECT count(*) FROM datetmp WHERE a >= '2001-02-13'::date;
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SELECT count(*) FROM datetmp WHERE a > '2001-02-13'::date;
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EXPLAIN (COSTS OFF)
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SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3;
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SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3;
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