Github user anoopsharma00 commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/1009#discussion_r106193525
--- Diff: core/sql/common/CharType.cpp ---
@@ -967,6 +972,28 @@ SQLVarChar::SQLVarChar(const CharLenInfo & maxLenInfo,
{}
// -----------------------------------------------------------------------
+// Equality comparison
+// -----------------------------------------------------------------------
+NABoolean SQLVarChar::operator==(const NAType& other) const
+{
+ NABoolean compResult = FALSE; // false, failed. true, passed.
+
+ // if this or other was originally a hive string type, then
+ // do not compare lengths.
+ if ((wasHiveString()) ||
+ ((other.getTypeName() == LiteralVARCHAR) &&
+ (((SQLVarChar&)other).wasHiveString())))
--- End diff --
literalVARCHAR is used for all sql varchar datatypes.
The bytesPerChar and character set parameters to the char
classes defined in common/CharType.h determine what
kind of char datatype it is.
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