Github user anoopsharma00 commented on a diff in the pull request:
https://github.com/apache/incubator-trafodion/pull/441#discussion_r61702049
--- Diff: core/sql/exp/exp_eval.cpp ---
@@ -862,7 +862,17 @@ ex_expr::exp_return_type
ex_expr::evalClauses(ex_clause *clause,
atp1->setDiagsArea(diagsArea);
if (retcode == ex_expr::EXPR_ERROR)
- return retcode;
+ {
+ if((getPCodeMode() & ex_expr::ERROR_CONTINUE) > 0)
+ {
+ ExpTupleDesc::setNullValue( op_data[0],
+
clause->getOperand(0)->getNullBitIndex(),
+
clause->getOperand(0)->getTupleFormat() );
+ retcode = ex_expr::EXPR_OK;
--- End diff --
Couple things:
Codegen time: The flag to move null in case of an error should be set only
if target is nullable.
Runtime: Expr code should check to make sure that target is nullable before
moving
the null value. If target is non-nullable, then original error should be
returned.
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