Soft coded date filter causing query to run slow

revlisj

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Greetings,

I created a query (in Access 2010) that joins several linked tables (to an Oracle database). The query runs in about 20 seconds when I filter with a “hard coded” date (e.g., #12/31/2014#). The Oracle table column I’m filtering on is defined as date/time.

When I attempt to change the hard coded value to a “soft coded” value (e.g., Forms![Form1]![Latest_Extract_Date]), the query runs over 5 minutes. In this case, the form field has the exact same value (12/31/2014).

I’ve encountered similar issues using Access 2000, 2003, etc. This is quite frustrating. Does Access interpret #date value# is a special way? Is there a way to trick Access into the thinking a soft coded date is a hard coded date?

Cheers,
Jeff
 

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