Can you rework it to use a correlated sub-query along the lines: SELECT a.f1,a.f2,b.ff1,b.ff2 FROM table1 a LEFT OUTER JOIN table2 b ON a.id = b.id AND b.ff3 = 'T' and exists (select 1 from table2 where WHERE mydate BETWEEN '3/4/2002' AND '3/6/2002' AND ff4 = 'somevalue' and id = a.id and ff3 = a.ff3)
Just a suggestion... Chuck McElwee etech solutions inc www.etechsolutions.com -----Original Message----- From: Adrian Cesana [mailto:[EMAIL PROTECTED]] Sent: Wednesday, March 06, 2002 7:41 PM To: CF-Talk Subject: slooow query using JOIN This queries performance is acceptable (about 1 second) when run like this: SELECT a.f1,a.f2,b.ff1,b.ff2 FROM table1 a LEFT OUTER JOIN table2 b ON a.id = b.id AND b.ff3 = 'T' WHERE a.mydate BETWEEN '3/4/2002' AND '3/6/2002' AND b.ff4 = 'somevalue' It is terrible (60 seconds) when run like this: SELECT a.f1,a.f2,b.ff1,b.ff2 FROM table1 a LEFT OUTER JOIN table2 b ON a.id = b.id AND b.ff3 = 'T' WHERE b.mydate BETWEEN '3/4/2002' AND '3/6/2002' AND b.ff4 = 'somevalue' I need the date range to come from the b.maydate. The field is indexed. If I run another query directy on table2 b without a JOIN and using b.mydate for some daterange it is quite fast. Any idea how to speed this up? Thanks,Adrian MSSQL 7 ______________________________________________________________________ Why Share? Dedicated Win 2000 Server � PIII 800 / 256 MB RAM / 40 GB HD / 20 GB MO/XFER Instant Activation � $99/Month � Free Setup http://www.pennyhost.com/redirect.cfm?adcode=coldfusionc FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/[email protected]/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
