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  2. MIDRANGE-L
  3. May 2003

Re: Performance and timestamp fileds

Marco

CHGQRYA QRYTIMLMT(0) & STRDBG

Then run the statement - when the message comes up, take 'C' to cancel, then check your joblog for what the SQL Optimizer recommends for indexes. Then ENDDBG and CHGQRYA QRYTIMLMT(*NOMAX) (or whatever was the original setting). Let us know what you see, including reasons for rejecting indexes.

HTH

Vern

At 08:23 AM 5/15/2003 -0700, you wrote:
I'm at V5R2:

Executing a runqry with rcdslt(*yes) on a file with:

RECSTATE       1A
.....
DATEDOC         L
.....
MODIFIED        Z

if the record select is:

    RECSTATE  EQ  ' '
AND MODIFIED  GE  '2003-05-09-00.00.00.000000'

it takes few seconds, if

    RECSTATE  EQ  ' '
AND DATADOC   LT  '31/13/02'
AND MODIFIED  GE  '2003-05-09-00.00.00.000000'

it takes 7 minutes.

All the logical files exclude RECSTATE *NE ' '.
There is a logical with the key on DATADOC.
Other logicals don't use DATADOC.

Any idea?



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