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This week, one of our group had occasion to us SQL to insert a large
number of records into a work file. It was a simple INSERT INTO FROM
WHERE... It went rather quickly.
When he was finished with those records in the work file, he then issues
a simple DELETE FROM WHERE... against his work file. The DELETE took
SUBSTANTIALLY longer than the insert. REUSEDLT isn't an issue and is
off.
It's been a while since I've played in this space, so, I'm curious as to
what, on a MI/DBMS level, is going on that would account for the
substantial time/resource difference.
Thanks
DR2
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