Re: select query taking too long

2005-10-19 Thread Michael Dykman
I"m a little confused by the query you posted.. it looks like it would work, although with many redundant subqueries to get there. From your requirement, I don't understand why you needs to wrap it in a self- referencing subquery.. Why does this not give you the same logical value? selec

Re: select query taking too long

2005-10-19 Thread Anoop kumar V
Unfortunately, I cannot create indexes for these tables. These are on production and I cannot modify the tables in anyway. Also, none of the columns are unique in nature - they just serve as a reporting store. Is there anyway that I can tune the select query itself and hope some performance enhanc

Re: select query taking too long

2005-10-19 Thread Jasper Bryant-Greene
On Wed, 2005-10-19 at 17:39 -0400, Anoop kumar V wrote: > I have 2 tables used for reporting and there are no primary keys or > indexes for either. I am trying to run a select query to identify some > rows that need to be removed. But for around 100,000 rows the query is > taking too long. Can some

select query taking too long

2005-10-19 Thread Anoop kumar V
hi All, I have 2 tables used for reporting and there are no primary keys or indexes for either. I am trying to run a select query to identify some rows that need to be removed. But for around 100,000 rows the query is taking too long. Can somebody please help me in tuning this query? The 2 tables