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https://issues.apache.org/jira/browse/TRAFODION-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15609959#comment-15609959
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ASF GitHub Bot commented on TRAFODION-2127:
-------------------------------------------
Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/772#discussion_r85232063
--- Diff: core/sql/optimizer/ItemExpr.cpp ---
@@ -10441,6 +10441,20 @@ void ConstValue::changeStringConstant(const
NAString* strval)
*text_ = *strval;
}
+NABoolean ConstValue::isAFalseConstant() const
+{
+ NABoolean result = FALSE;
+
+ if (type_->getTypeQualifier() == NA_BOOLEAN_TYPE && !isNull())
+ {
+ CMPASSERT(storageSize_ == sizeof(Int32));
+ if (*(reinterpret_cast<Int32 *>(value_)) == 0)
+ result = TRUE; // that means the constant is FALSE!!
--- End diff --
:-)
> 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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