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  3. December 2008

CQE changes between v5r2 and v5r4? Query/400 Performance.

All,

I was under the impression that the CQE had no changes between v5r2 and
v5r4; that all the enhancements (ie. changes) went into the SQE.

However, now that we've upgrade to v5r4, I've had a few complaints from both
users and IT Business Analysts saying that some Query/400 queries are
performing much poorer now than they did in the past.

I expected to see changes in the performance of (some) SQL queries that used
the SQE. But since Query/400 queries use the CQE, I didn't expect any
performance differences.

Has anybody else had this issue?

I'm trying to take a look at some of the offenders, but thought I'd post
here at the same time.

Charles

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