> ----- Original Message ----- >> From: Tom Lane <t...@sss.pgh.pa.us> >> To: Denis de Bernardy <ddeberna...@yahoo.com> >> Cc: "pgsql-performance@postgresql.org" > <pgsql-performance@postgresql.org> >> Sent: Wednesday, May 4, 2011 4:12 PM >> Subject: Re: [PERFORM] row estimate very wrong for array type >> >> Array && uses areasel() which is only a stub :-(
On a separate note, in case this ever gets found via google, I managed to force the use of the correct index in the meanwhile: # explain analyze select * from test where (0 = any(intarr1) or 1 = any(intarr1)) and (2 = any(intarr2) or 4 = any(intarr2)) order by sortcol limit 10; QUERY PLAN ----------------------------------------------------------------------------------------------------------------------------------- Limit (cost=0.00..385.16 rows=10 width=217) (actual time=0.107..0.151 rows=10 loops=1) -> Index Scan using test_sortcol_key on test (cost=0.00..14019.98 rows=364 width=217) (actual time=0.106..0.146 rows=10 loops=1) Filter: (((0 = ANY (intarr1)) OR (1 = ANY (intarr1))) AND ((2 = ANY (intarr2)) OR (4 = ANY (intarr2)))) Total runtime: 0.214 ms I guess I'm in for maintaining counts and rewriting queries as needed. :-( D -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
