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Add KNNGIST support to contrib/btree_gist.

Browse Source 
This extends GiST's support for nearest-neighbor searches to many of the
standard data types.

Teodor Sigaev
This commit is contained in:
Tom Lane
2011-03-02 14:43:24 -05:00
parent 6094c242d1
commit 8436489c81
40 changed files with 1546 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
contrib/btree_gist/sql/cash.sql
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@ -16,6 +16,8 @@ SELECT count(*) FROM moneytmp WHERE a >= '22649.64';
SELECT count(*) FROM moneytmp WHERE a > '22649.64';
SELECT a, a <-> '21472.79' FROM moneytmp ORDER BY a <-> '21472.79' LIMIT 3;
CREATE INDEX moneyidx ON moneytmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM moneytmp WHERE a = '22649.64'::money;
SELECT count(*) FROM moneytmp WHERE a >= '22649.64'::money;
SELECT count(*) FROM moneytmp WHERE a > '22649.64'::money;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '21472.79' FROM moneytmp ORDER BY a <-> '21472.79' LIMIT 3;
SELECT a, a <-> '21472.79' FROM moneytmp ORDER BY a <-> '21472.79' LIMIT 3;

6
contrib/btree_gist/sql/date.sql
View File

@ -16,6 +16,8 @@ SELECT count(*) FROM datetmp WHERE a >= '2001-02-13';
SELECT count(*) FROM datetmp WHERE a > '2001-02-13';
SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3;
CREATE INDEX dateidx ON datetmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM datetmp WHERE a = '2001-02-13'::date;
SELECT count(*) FROM datetmp WHERE a >= '2001-02-13'::date;
SELECT count(*) FROM datetmp WHERE a > '2001-02-13'::date;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3;
SELECT a, a <-> '2001-02-13' FROM datetmp ORDER BY a <-> '2001-02-13' LIMIT 3;

6
contrib/btree_gist/sql/float4.sql
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@ -16,6 +16,8 @@ SELECT count(*) FROM float4tmp WHERE a >= -179.0;
SELECT count(*) FROM float4tmp WHERE a > -179.0;
SELECT a, a <-> '-179.0' FROM float4tmp ORDER BY a <-> '-179.0' LIMIT 3;
CREATE INDEX float4idx ON float4tmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM float4tmp WHERE a = -179.0::float4;
SELECT count(*) FROM float4tmp WHERE a >= -179.0::float4;
SELECT count(*) FROM float4tmp WHERE a > -179.0::float4;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '-179.0' FROM float4tmp ORDER BY a <-> '-179.0' LIMIT 3;
SELECT a, a <-> '-179.0' FROM float4tmp ORDER BY a <-> '-179.0' LIMIT 3;

6
contrib/btree_gist/sql/float8.sql
View File

@ -16,6 +16,8 @@ SELECT count(*) FROM float8tmp WHERE a >= -1890.0;
SELECT count(*) FROM float8tmp WHERE a > -1890.0;
SELECT a, a <-> '-1890.0' FROM float8tmp ORDER BY a <-> '-1890.0' LIMIT 3;
CREATE INDEX float8idx ON float8tmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM float8tmp WHERE a = -1890.0::float8;
SELECT count(*) FROM float8tmp WHERE a >= -1890.0::float8;
SELECT count(*) FROM float8tmp WHERE a > -1890.0::float8;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '-1890.0' FROM float8tmp ORDER BY a <-> '-1890.0' LIMIT 3;
SELECT a, a <-> '-1890.0' FROM float8tmp ORDER BY a <-> '-1890.0' LIMIT 3;

6
contrib/btree_gist/sql/int2.sql
View File

@ -16,6 +16,8 @@ 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;
@ -29,3 +31,7 @@ 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;

6
contrib/btree_gist/sql/int4.sql
View File

@ -16,6 +16,8 @@ SELECT count(*) FROM int4tmp WHERE a >= 237;
SELECT count(*) FROM int4tmp WHERE a > 237;
SELECT a, a <-> '237' FROM int4tmp ORDER BY a <-> '237' LIMIT 3;
CREATE INDEX int4idx ON int4tmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM int4tmp WHERE a = 237::int4;
SELECT count(*) FROM int4tmp WHERE a >= 237::int4;
SELECT count(*) FROM int4tmp WHERE a > 237::int4;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '237' FROM int4tmp ORDER BY a <-> '237' LIMIT 3;
SELECT a, a <-> '237' FROM int4tmp ORDER BY a <-> '237' LIMIT 3;

6
contrib/btree_gist/sql/int8.sql
View File

@ -16,6 +16,8 @@ SELECT count(*) FROM int8tmp WHERE a >= 464571291354841;
SELECT count(*) FROM int8tmp WHERE a > 464571291354841;
SELECT a, a <-> '464571291354841' FROM int8tmp ORDER BY a <-> '464571291354841' LIMIT 3;
CREATE INDEX int8idx ON int8tmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM int8tmp WHERE a = 464571291354841::int8;
SELECT count(*) FROM int8tmp WHERE a >= 464571291354841::int8;
SELECT count(*) FROM int8tmp WHERE a > 464571291354841::int8;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '464571291354841' FROM int8tmp ORDER BY a <-> '464571291354841' LIMIT 3;
SELECT a, a <-> '464571291354841' FROM int8tmp ORDER BY a <-> '464571291354841' LIMIT 3;

6
contrib/btree_gist/sql/interval.sql
View File

@ -16,6 +16,8 @@ SELECT count(*) FROM intervaltmp WHERE a >= '199 days 21:21:23';
SELECT count(*) FROM intervaltmp WHERE a > '199 days 21:21:23';
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;
CREATE INDEX intervalidx ON intervaltmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM intervaltmp WHERE a = '199 days 21:21:23'::interval;
SELECT count(*) FROM intervaltmp WHERE a >= '199 days 21:21:23'::interval;
SELECT count(*) FROM intervaltmp WHERE a > '199 days 21:21:23'::interval;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;
SELECT a, a <-> '199 days 21:21:23' FROM intervaltmp ORDER BY a <-> '199 days 21:21:23' LIMIT 3;

6
contrib/btree_gist/sql/time.sql
View File

@ -16,6 +16,8 @@ SELECT count(*) FROM timetmp WHERE a >= '10:57:11';
SELECT count(*) FROM timetmp WHERE a > '10:57:11';
SELECT a, a <-> '10:57:11' FROM timetmp ORDER BY a <-> '10:57:11' LIMIT 3;
CREATE INDEX timeidx ON timetmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM timetmp WHERE a = '10:57:11'::time;
SELECT count(*) FROM timetmp WHERE a >= '10:57:11'::time;
SELECT count(*) FROM timetmp WHERE a > '10:57:11'::time;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '10:57:11' FROM timetmp ORDER BY a <-> '10:57:11' LIMIT 3;
SELECT a, a <-> '10:57:11' FROM timetmp ORDER BY a <-> '10:57:11' LIMIT 3;

6
contrib/btree_gist/sql/timestamp.sql
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@ -16,6 +16,8 @@ SELECT count(*) FROM timestamptmp WHERE a >= '2004-10-26 08:55:08';
SELECT count(*) FROM timestamptmp WHERE a > '2004-10-26 08:55:08';
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;
CREATE INDEX timestampidx ON timestamptmp USING gist ( a );
SET enable_seqscan=off;
@ -29,3 +31,7 @@ SELECT count(*) FROM timestamptmp WHERE a = '2004-10-26 08:55:08'::timestamp;
SELECT count(*) FROM timestamptmp WHERE a >= '2004-10-26 08:55:08'::timestamp;
SELECT count(*) FROM timestamptmp WHERE a > '2004-10-26 08:55:08'::timestamp;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;
SELECT a, a <-> '2004-10-26 08:55:08' FROM timestamptmp ORDER BY a <-> '2004-10-26 08:55:08' LIMIT 3;

6
contrib/btree_gist/sql/timestamptz.sql
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@ -37,7 +37,7 @@ SELECT count(*) FROM timestamptztmp WHERE a >= '2018-12-18 10:59:54 GMT+4';
SELECT count(*) FROM timestamptztmp WHERE a > '2018-12-18 10:59:54 GMT+4';
SELECT a, a <-> '2018-12-18 10:59:54 GMT+2' FROM timestamptztmp ORDER BY a <-> '2018-12-18 10:59:54 GMT+2' LIMIT 3;
CREATE INDEX timestamptzidx ON timestamptztmp USING gist ( a );
@ -74,3 +74,7 @@ SELECT count(*) FROM timestamptztmp WHERE a = '2018-12-18 10:59:54 GMT+4'::time
SELECT count(*) FROM timestamptztmp WHERE a >= '2018-12-18 10:59:54 GMT+4'::timestamptz;
SELECT count(*) FROM timestamptztmp WHERE a > '2018-12-18 10:59:54 GMT+4'::timestamptz;
EXPLAIN (COSTS OFF)
SELECT a, a <-> '2018-12-18 10:59:54 GMT+2' FROM timestamptztmp ORDER BY a <-> '2018-12-18 10:59:54 GMT+2' LIMIT 3;
SELECT a, a <-> '2018-12-18 10:59:54 GMT+2' FROM timestamptztmp ORDER BY a <-> '2018-12-18 10:59:54 GMT+2' LIMIT 3;