Github user DaveBirdsall commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/132#discussion_r42409193
--- Diff: core/sql/optimizer/ItemExpr.cpp ---
@@ -14906,3 +14906,80 @@ NABoolean LOBoper::isCovered
return FALSE;
}
+// Compute the exprssion at compile time. Assume all operands are
constants.
+// Return NULL if the computation fails and CmpCommon::diags() may be
side-affected.
+ConstValue* ItemExpr::compute(CollHeap* heap)
--- End diff --
If it were a general routine, though, instead of "decodedKeyBuf", maybe
"resultBuf". But it is OK as is I think.
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