Re: [PERFORM] Optimizer wrongly picks Nested Loop Left Join

2005-05-11 Thread Edin Kadribasic
From: "Tom Lane" <[EMAIL PROTECTED]> > "Edin Kadribasic" <[EMAIL PROTECTED]> writes: > > I have a query that is giving the optimizer (and me) great headache. > > The main problem seems to be that the rowcount estimates for > ax

[PERFORM] Optimizer wrongly picks Nested Loop Left Join

2005-05-11 Thread Edin Kadribasic
Hi, I have a query that is giving the optimizer (and me) great headache. When its in the good mood the optimizer chooses Hash Left Join and the query executes in 13ms or so, but sometimes (more and more often) it chooses Nested Loop Left Join and the execution time goes up to 2-30sec. The query: