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Select acct,chk#,chkdt, chkseq, svcfrom,svcto from checkhist
where acct=8111222 order by svcfrom,svcto,chk#
File has 10 million + records
There are derived indexes, but non-derived with acct as 1st key field.
This account had 45 records
Executed a table scan
There is a QAQQINI in libl, left from V5R4 with Ignore_Derived_Index = *Yes
I had expected it would see the few records with this acct, build a temp table.
Is there something in the select stmt to avoid this behavior?
Jim Franz
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