database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-06-13 07:41:39 +03:00
Code Activity

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
View File

@ -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;