hannerwang commented on code in PR #2838:
URL: https://github.com/apache/calcite/pull/2838#discussion_r903584538
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core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
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@@ -6661,6 +6661,11 @@ static class ExtendedExpander extends Expander {
SqlIdentifier sid = (SqlIdentifier) expr;
final SqlIdentifier fqId = getScope().fullyQualify(sid).identifier;
expr = expandDynamicStar(sid, fqId);
+ } else {
+ requireNonNull(expr, "expr");
Review Comment:
Thanks ruben, I dove into SqlNodeList which is type of selectList and found
its item could be nullable, but I couldn't found any possible nullable
selectItem in parser.jj, so I think selectItem must be non-nullable, do you
think so?
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