Hyunsik Choi created TAJO-959:
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Summary: ExprAnnotator::converType may result in incorrect type
convert against CaseWhen
Key: TAJO-959
URL: https://issues.apache.org/jira/browse/TAJO-959
Project: Tajo
Issue Type: Bug
Reporter: Hyunsik Choi
Priority: Minor
See the below code. For CaseWhen, we should consider multiple results of case
when clauses as well as its else types. So, if we consider only
{{evalNode.getValueType().getType()}}, it can result in incorrect type casting.
{code:title="ExprAnnotator::converType()"}
// the conversion to null is not allowed.
if (evalNode.getValueType().getType() == Type.NULL_TYPE ||
toType.getType() == Type.NULL_TYPE) {
return evalNode;
}
{code}
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