Re: [GENERAL] good experience with performance in 8.2 for multi column indexes

2008-04-20 Thread Michael Enke
No, both negative. Michael Tom Lane wrote: Michael Enke <[EMAIL PROTECTED]> writes: For my setup, in 8.1 a delete query which deletes 20 entries depending on rows in another table runs about 7h, in 8.2 (and later) it runs 9s! If those rowcount estimates are even close to accurate, the

Re: [GENERAL] good experience with performance in 8.2 for multi column indexes

2008-04-18 Thread Tom Lane
Michael Enke <[EMAIL PROTECTED]> writes: > For my setup, in 8.1 a delete query which deletes 20 entries depending on > rows in another table > runs about 7h, in 8.2 (and later) it runs 9s! If those rowcount estimates are even close to accurate, there's no reason for the hash plan to be so muc

Re: [GENERAL] good experience with performance in 8.2 for multi column indexes

2008-04-18 Thread Thomas Markus
Hi, your query cant perform well on 8.1 better use a query like delete from pluext1 using pluext2 where pluext1.plunmbr = pluext2.plunmbr and pluext1.pluexttype = pluext2.pluexttype it should perform much faster. be sure to use indizes regards thomas Michael Enke schrieb: Hi lists, I want