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https://issues.apache.org/jira/browse/TRAFODION-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15610207#comment-15610207
]
ASF GitHub Bot commented on TRAFODION-2127:
-------------------------------------------
Github user zellerh commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/772#discussion_r85249422
--- Diff: core/sql/arkcmp/CmpStatement.cpp ---
@@ -1688,3 +1690,26 @@ void CmpStatement::setTMUDFRefusedRequirements(const
char *details)
detailsOnRefusedRequirements_->insert(new(heap_) NAString(details,
heap_));
}
+
+void CmpStatement::addCSEInfo(CSEInfo *info)
+{
+ if (cses_ == NULL)
+ cses_ = new(CmpCommon::statementHeap())
+ LIST(CSEInfo *)(CmpCommon::statementHeap());
+
+ info->setCSEId(cses_->entries());
+ cses_->insert(info);
+}
+
+CSEInfo * CmpStatement::getCSEInfo(const char *cseName)
+{
+ if (cses_)
+ for (CollIndex i=0; i<cses_->entries(); i++)
+ {
+ if ((*cses_)[i]->getName() == cseName)
--- End diff --
As far as I understand, the WITH clause can appear only at the beginning of
a statement and the names must be unique. The scope of these names extends
across the entire statement.
> enhance Trafodion implementation of WITH clause
> -----------------------------------------------
>
> Key: TRAFODION-2127
> URL: https://issues.apache.org/jira/browse/TRAFODION-2127
> Project: Apache Trafodion
> Issue Type: Improvement
> Reporter: liu ming
> Assignee: Hans Zeller
>
> TRAFODION-1673 described some details about how to support WITH clause in
> Trafodion.
> As initial implementation, we use a simple pure-parser method.
> That way, Trafodion can support WITH clause functionally, but not good from
> performance point of view,
> also need to enhance the parser to be more strict in syntax.
> This JIRA is a follow up JIRA, to track following effort to support Trafodion
> WITH clause.
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