Drew Wutka
DWUTKA at Marlow.com
Thu Mar 18 12:01:01 CDT 2010
Did this fix the problem for you JWC? If not, it sounds like this is in Access, make sure that your SQL is SQL Server friendly, so it's passthrough. Otherwise Access is going to want to work on the data. Drew -----Original Message----- From: accessd-bounces at databaseadvisors.com [mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Gustav Brock Sent: Monday, March 15, 2010 10:02 AM To: accessd at databaseadvisors.com Subject: Re: [AccessD] UNION slowness Hi John How about using UNION ALL? Without the ALL it performs a default DISTINCT which may be very slow. /gustav >>> jwcolby at colbyconsulting.com 15-03-2010 15:51 >>> I have always done a UNION to get a combo list with *; All as the first item in a combo of other items. PKID, Client or PKID, Product etc. These unions are takling as looooooong time (many seconds) when going against a SQL database. Not sure why because the actual data itself is almost instant, it is just when unioned with my other piece it takes forever to get the result set. Strange. I could do a custom callback but it takes me forever to figure out the callback crap, and I just generally hate them. I wanted to do a value list since the lists are short, but AFAICT the list value function has to be interpreted and dumped in to the property in OnEnter and the like. Clumsey, particularly when one combo depends on (is filtered by) another list (products filtered by client etc). Any words of wisdom on this? Something I have forgotten or never knew? -- John W. Colby www.ColbyConsulting.com -- AccessD mailing list AccessD at databaseadvisors.com http://databaseadvisors.com/mailman/listinfo/accessd Website: http://www.databaseadvisors.com The information contained in this transmission is intended only for the person or entity to which it is addressed and may contain II-VI Proprietary and/or II-VI Business Sensitive material. If you are not the intended recipient, please contact the sender immediately and destroy the material in its entirety, whether electronic or hard copy. You are notified that any review, retransmission, copying, disclosure, dissemination, or other use of, or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited.