Re: Query using Logical File

["Al Barsa" <barsa@xxxxxxxxxxxxxxxxxxx>]

The query optimizer should pick the correct view to read from.  I would
report this as a bug.

Al

Al Barsa, Jr.
Barsa Consulting Group, LLC

400>390

914-251-1234
914-251-9406 fax

http://www.barsaconsulting.com
http://www.taatool.com






                      "Ray Nainy"
                      <ray_456@hotmail.c        To:       
MIDRANGE-L@midrange.com
                      om>                       cc:
                      Sent by:                  Subject:  Query using Logical 
File
                      midrange-l-admin@m
                      idrange.com


                      06/14/2002 02:33
                      AM
                      Please respond to
                      midrange-l







Consider we have a physical file with 500,000 records and a logical file
based on this physical file with 200,000 index entries. We have the
required set of records available through the logical file.

My question is, the SQL query processing time is less if we use logical
file
in the SQL query. Is there any standard like, it is better to use a
physical
file in any SQL query? If yes, why should we use a physical file instead of
a logical file eventhough we have the required data
available through the logical file's access path?

Any feedback is greatly appreciated.

thanks.



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