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https://issues.apache.org/jira/browse/TRAFODION-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15688064#comment-15688064
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ASF GitHub Bot commented on TRAFODION-2353:
-------------------------------------------
Github user zellerh commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/842#discussion_r89219091
--- Diff: core/sql/optimizer/ItemExpr.cpp ---
@@ -7922,10 +7924,46 @@ ItemExpr * InverseOrder::removeInverseOrder()
}
// -----------------------------------------------------------------------
+// member functions for PatternMatchingFunction.
+// -----------------------------------------------------------------------
+PatternMatchingFunction::~PatternMatchingFunction() {}
+
+// -----------------------------------------------------------------------
// member functions for Like
// -----------------------------------------------------------------------
Like::~Like() {}
+Regexp::~Regexp() {}
+
+
+ItemExpr * Regexp::copyTopNode(ItemExpr *derivedNode, CollHeap* outHeap)
+{
+ ItemExpr *result = NULL;
+
+ if (derivedNode == NULL)
+ {
+ switch (getArity())
+ {
+ case 2:
+ result = new (outHeap) Regexp(child(0), child(1),
--- End diff --
The copyTopNode() method is not supposed to copy any children. I think the
children should be initialized with NULL here.
> support of the regexp operator
> ------------------------------
>
> Key: TRAFODION-2353
> URL: https://issues.apache.org/jira/browse/TRAFODION-2353
> Project: Apache Trafodion
> Issue Type: New Feature
> Reporter: liu ming
> Assignee: liu ming
>
> It is desired to have REGEXP.
> Some initial researching already done in:
> https://cwiki.apache.org/confluence/display/TRAFODION/Example+Enhancement%3A+Add+a+New+Built-in+Function
> This JIRA is to add REGEXP operator, not including functions may required
> future, if required, related JIRA will be created.
> The good advice in the wiki is to do new features incrementally.
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