diff --git a/dbcon/execplan/arithmeticcolumn.cpp b/dbcon/execplan/arithmeticcolumn.cpp
index 5c12f7e5f..2c2eb5ace 100644
--- a/dbcon/execplan/arithmeticcolumn.cpp
+++ b/dbcon/execplan/arithmeticcolumn.cpp
@@ -345,10 +345,10 @@ bool ArithmeticColumn::operator==(const ArithmeticColumn& t) const
 	}
 	else if (fExpression != NULL || t.fExpression != NULL)
 		return false;
-	if (fAlias != t.fAlias)
-		return false;
-	if (fTableAlias != t.fTableAlias)
-	    return false;
+//	if (fAlias != t.fAlias)
+//		return false;
+//	if (fTableAlias != t.fTableAlias)
+//	    return false;
 	if (fData != t.fData)
 		return false;
 	return true;
diff --git a/dbcon/execplan/constantcolumn.cpp b/dbcon/execplan/constantcolumn.cpp
index fce3825b8..fadd2dfc9 100644
--- a/dbcon/execplan/constantcolumn.cpp
+++ b/dbcon/execplan/constantcolumn.cpp
@@ -316,8 +316,8 @@ bool ConstantColumn::operator==(const ConstantColumn& t) const
 		return false;
 	if (fType != t.fType)
 		return false;
-	if (fAlias != t.fAlias)
-		return false;
+//	if (fAlias != t.fAlias)
+//		return false;
 	if (fData != t.fData)
 		return false;
 	if (fReturnAll != t.fReturnAll)