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Question about pass through queries



 
 
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  #1  
Old February 14th, 2007, 08:51 PM posted to microsoft.public.access.queries
Bongard
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Posts: 122
Default Question about pass through queries

I have a large database where I am contemplating using pass-through
queries to all my ODBC tables or just bringing in all the linked
tables and running queries from the tables. What I am most concerned
with is which method will have better performance? Will it make a
difference?

Thanks!

  #2  
Old February 14th, 2007, 09:47 PM posted to microsoft.public.access.queries
Duane Hookom
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Posts: 7,177
Default Question about pass through queries

Performance should be much improved with P-T queries. Keep in mind, your P-T
records will not be updateable and the SQL must match your database server
syntax. You also can't join to a local table within the P-T.

--
Duane Hookom
Microsoft Access MVP


"Bongard" wrote:

I have a large database where I am contemplating using pass-through
queries to all my ODBC tables or just bringing in all the linked
tables and running queries from the tables. What I am most concerned
with is which method will have better performance? Will it make a
difference?

Thanks!


  #3  
Old February 15th, 2007, 02:17 PM posted to microsoft.public.access.queries
Bongard
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Posts: 122
Default Question about pass through queries

Thanks much Duane! The reason I asked is because it felt like a few of
my basic pass-through queries were running slower than the queries
based off the linked tables and I didn't know whether I should go back
to linked tables or not.

Thanks for your help!

  #4  
Old February 15th, 2007, 04:02 PM posted to microsoft.public.access.queries
Duane Hookom
external usenet poster
 
Posts: 7,177
Default Question about pass through queries

It's always been my experience that P-T queries are more efficient. It might
be an issue where you have a criteria in the linked table query and no
filtering on the P-T.
--
Duane Hookom
Microsoft Access MVP


"Bongard" wrote:

Thanks much Duane! The reason I asked is because it felt like a few of
my basic pass-through queries were running slower than the queries
based off the linked tables and I didn't know whether I should go back
to linked tables or not.

Thanks for your help!


 




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