Hi all again, I've been experimenting and would like to know if there is a known bug in the std function when used with a group by clause? I'd like to know if others have found this problem or is it just me:
I have a query without a groupby clause and the avg and std functions work fine. I add a group by clause on a field brought in from another table and the avg still works as expected but the std function returns all 0's. eg: this works: select count(Test1000.OID) as N, avg(Accuracy) as AccAvg, std(Accuracy) as AccStd from Test1000,ROrders WHERE ROrders.OID=Test1000.OID --------------- N AccAvg AccStd 545 91.3133 13.0047 this does NOT: select count(Test1000.OID) as N,Language, avg(Accuracy) as AccAvg,std(Accuracy) as AccStd from Test1000,ROrders WHERE ROrders.OID=Test1000.OID Group by Language ---------------------------- N Language AccAvg AccStd 521 1 91.4302 0.0000 24 2 87.3846 0.0000 Any thoughts or referals would be greatly appreciated! Judy Simon Webmaster & DB Systems Engineer NeuroTrax Israel LTD, Shilat, Israel Tel: +972-8-976-3067 Fax: +972-8-976-3068 Judy Simon Webmaster & DB Systems Engineer NeuroTrax Israel LTD, Shilat, Israel Tel: +972-8-976-3067 Fax: +972-8-976-3068 Judy Simon Webmaster & DB Systems Engineer NeuroTrax Israel LTD, Shilat, Israel Tel: +972-8-976-3067 Fax: +972-8-976-3068 --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
