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  2. RPG400-L
  3. March 2013

Re: Still More, Re: Questions about RPG service program as an SQL UDF

James

Visual Explain is the best starting point for finding that out - it will tell you exactly what is done - there are even some reasons given in the list on the right.

Once you've looked there, tell us some of what you see - click on the several nodes - then come back with more specific questions.

Vern

On 3/4/2013 10:22 AM, James H. H. Lampert wrote:
On 3/2/13 9:35 AM, CRPence wrote:
Actually to be UNION'd is more [work] than to be UNION ALL'd ;-)
I'm more interested in why adding censorship with a simple WHERE clause
in the VIEW definition is adding a nested loop join.

And in which branch of the UNION ALL is causing the entire view to be
scanned, from top to bottom.

--
JHHL


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