Re: [SQL] [7.0.3] optimizing a LIKE query ...

2001-04-04 Thread Tom Lane
The Hermit Hacker <[EMAIL PROTECTED]> writes: > I'm figuring that if I can somehow get the query (using subselects, > maybe?), to have the LIKE part of the query work only on the 6k records > returned by the "=" part of it, the overall results should be faster ... In 7.0.* I think the only way to

[SQL] [7.0.3] optimizing a LIKE query ...

2001-04-04 Thread The Hermit Hacker
Can someone suggest how to improve the following query, so as to make the LIKE section operate on the results found by the = one? SELECT ndict.url_id,ndict.intag FROM ndict,url WHERE ndict.word_id=-720551816 AND url.rec_id=ndict.url_id AND ((url.url || '') LIKE '%http://www.postgresql.o