Vern Hamberg wrote:

Just spoke with a couple of the database guys at that "fictional"
IBM lab in Rochester - verified that the SELECT statement inside
the CREATE TABLE statement would be cached. I'd asked about
whether they could find a way to allow parameter markers in this
situation - said they could, but it is not in the standards.
Guess the answer to why it is this way is to read the SQL
standards documents - not IBM's - the industry-standard ones.

OK, now literals in the subquery can be parameterized in the plan
cache - so there would not be separate statements for each
separate literal value in a built-up statement string. There
might be different entries if the statistics on the column in
question show a skew for some values, resulting in a different
plan based on frequent values and histogram distribution and all
that.

So it isn't likely to be so bad as you suggest - there might be
hope, after all!!


Cool. Good to know.

If you are anywhere near the lab, then you are a /short/ walk from my not so fictional house ;-) I think I can see the stoplight at 41 St & 31 Ave, but I could for sure see some lights on the blue buildings when looking out my window just moments ago. You should stop over for a beer while in town :-)

Regards, Chuck

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