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From "Kathey Marsden (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-824) Enhance logic in PredicateList to use variant type of expression while determining search clauses or predicates, instead of using ConstantNode or ParameterNodes directly.
Date Fri, 28 Jul 2006 23:57:15 GMT
     [ http://issues.apache.org/jira/browse/DERBY-824?page=all ]

Kathey Marsden updated DERBY-824:
---------------------------------

    Fix Version/s:     (was: 10.2.0.0)

removing from 10.2. see:
http://www.nabble.com/10.2-High-Value-Fix-Candidates-and-Fix-Version-Adjustments-tf2007999.html

> Enhance logic in PredicateList to use variant type of expression while determining search
clauses or predicates, instead of using ConstantNode or ParameterNodes directly.
> --------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-824
>                 URL: http://issues.apache.org/jira/browse/DERBY-824
>             Project: Derby
>          Issue Type: Sub-task
>          Components: SQL
>    Affects Versions: 10.2.0.0
>         Environment: generic
>            Reporter: Satheesh Bandaram
>            Priority: Minor
>
> Code in PredicateList can be enhanced to use variant type of expressions while determining
whether a predicate qualifies to be a search clause or not.
> Currently code checks for ConstantNode or ParameterNode directly. It should also be possible
to enhance this logic to cover constant expressions so that predicates like col = upper('ES5')
would also be considered as search clauses. For a customer query in question, having col='ES5'
in the query completes the query in about 20 seconds, where as col=upper('ES5') runs for a
looong time. (more than several hours)

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