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From "Kathey Marsden (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3876) Stack overflow when issuing SELECT statements with *lots* of 'OR' in the WHERE clause
Date Tue, 18 Nov 2008 22:33:45 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3876?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kathey Marsden updated DERBY-3876:
----------------------------------

    Component/s: SQL

> Stack overflow when issuing SELECT statements with *lots* of 'OR' in the WHERE clause
> -------------------------------------------------------------------------------------
>
>                 Key: DERBY-3876
>                 URL: https://issues.apache.org/jira/browse/DERBY-3876
>             Project: Derby
>          Issue Type: Improvement
>          Components: SQL
>            Reporter: √ėyvind Harboe
>
> The problem is that e.g. Cayenne uses *long* SQL statements with *lots* of OR statements
to implement certain operations.
> This causes a stack overflow as evaluation of 'OR' is implemented recursively.
> Could an iterative implementation trivially replace the recursive implementation? 
> at org.apache.derby.impl.sql.compile.OrNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryLogicalOperatorNode.bindExpression(Unknown
Source)
> at org.apache.derby.impl.sql.compile.OrNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryLogicalOperatorNode.bindExpression(Unknown
Source)
> at org.apache.derby.impl.sql.compile.OrNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryLogicalOperatorNode.bindExpression(Unknown
Source)
> at org.apache.derby.impl.sql.compile.OrNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryOperatorNode.bindExpression(Unknown Source)
> at org.apache.derby.impl.sql.compile.BinaryLogicalOpera
> See also
> https://issues.apache.org/cayenne/browse/CAY-1079?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974#action_12974

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