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Data Bases > Microsoft Access > Re: Access Quer...
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Re: Access Query Enigma - WTF?

by "Albert D. Kallal" <PleaseNOOOsPAMmkallal@[EMAIL PROTECTED] > May 10, 2008 at 06:35 PM

It is certainly possible you're dealing with a damaged database, or perhaps

even damaged indexes.

Furthermore, moving a table little bit could force the query processor to 
build a new query plan, because perhaps it thinks that you've modified the

query again. Forcing the database engine to *re* build a new query plan 
could perhaps cause it to see some new records.

On the other hand, perhaps there some default like now() that has a time 
based criteria that actually changed or rolled over during the time when
you 
changed the table, and it simply occurred at the same time. (for example
of 
this occurred at twelve midnight, you could have new date criteria now
show 
up).

On the other hand, if you're saying this is a completely repeatable 
occurrence that you can do over and over, then something else strange is 
indeed going on here.

So, if this was just a one time occurrence, then I not much surprised at 
all, since changing things in a query in design mode causes the query 
processor to rebuild and recompile the query plan and even the statistics 
that JET will use for the query.

-- 
Albert D. Kallal    (Access MVP)
Edmonton, Alberta Canada
pleaseNOOSpamKallal@[EMAIL PROTECTED]

 




 6 Posts in Topic:
Access Query Enigma - WTF?
Vincent <animedreamer@  2008-05-09 21:41:39 
Re: Access Query Enigma - WTF?
Tom van Stiphout <no.s  2008-05-09 23:37:30 
Re: Access Query Enigma - WTF?
Dean <noreply@[EMAIL P  2008-05-10 02:01:00 
Re: Access Query Enigma - WTF?
"Albert D. Kallal&qu  2008-05-10 18:35:41 
Re: Access Query Enigma - WTF?
lyle fairfield <lyle.f  2008-05-10 18:47:34 
Re: Access Query Enigma - WTF?
"Larry Linson"   2008-05-11 21:38:01 

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tan12V112 Sun Oct 12 17:50:03 CDT 2008.