Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/946#discussion_r99958672
--- Diff: core/sql/optimizer/BindRelExpr.cpp ---
@@ -10600,34 +10600,45 @@ Upsert is also converted into merge when TRAF_UPSERT_MODE is
set to MERGE and
there are omitted cols with default values in case of aligned format table or
omitted current timestamp cols in case of non-aligned row format
*/
-NABoolean Insert::isUpsertThatNeedsMerge(NABoolean isAlignedRowFormat, NABoolean omittedDefaultCols,
- NABoolean omittedCurrentDefaultClassCols) const
+NABoolean Insert::isUpsertThatNeedsTransformation(NABoolean isAlignedRowFormat,
+ NABoolean omittedDefaultCols,
+ NABoolean omittedCurrentDefaultClassCols,
+ NABoolean &toMerge) const
--- End diff --
You've added a parameter to return more information from this function. This is fine.
Another way to do it is to change the return type from NABoolean to an enum, then no added
parameter would be needed. But this is just a matter of taste; it may or may not be more convenient
for the caller.
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