[AccessD] Make-Table Queries Combined

Hi Tina:

Large and complex queries are bound to start bouncing off system limits. The
best way around this is to limit the query grouping and use temp files
instead. The complexity is down, speed is back to normal and all that is
needed is a bit of programming to manage and delete the temp files when the
process is finished. This method should push a full job down to about half
and hour.

HTH
Jim

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Tina Norris
Fields
Sent: Thursday, June 12, 2003 6:06 AM
To: accessd at databaseadvisors.com
Subject: [AccessD] Make-Table Queries Combined


Hi List,

A friend's company has this situation:

A particular report is actually based on about 32 make-table queries.
 Running them one at a time works well, but requires someone to run each
one in sequence.  My friend combined these small queries into a big one
that gathers them all together.  He finds that when it gets to about the
14th query, everything slows down to a crawl.  In fact, it may take up
to 12 hours for the large combining query to finish its job.  I don't
know anything more about this situation.

Does anyone here know why this happens?  Is it something like the system
has to keep everything in memory until the query finishes?

Thanks for your thoughts.

Tina

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