strongduanmu commented on code in PR #4553:
URL: https://github.com/apache/calcite/pull/4553#discussion_r2437929745
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core/src/main/java/org/apache/calcite/sql/validate/SqlValidatorImpl.java:
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@@ -2204,6 +2208,25 @@ protected void inferUnknownTypes(
}
}
+ private boolean isRowSqlNodeList(final RelDataType inferredType, final
SqlNodeList nodeList) {
+ return inferredType.isStruct() && !nodeList.isEmpty()
+ && SqlKind.ROW == nodeList.get(0).getKind();
Review Comment:
This is because in a ROW Expression, the values on the right must be of
the ROW type (or the ROW reference type in PostgreSQL). These values will
have their type inferred in the isRowSqlNodeList method, so the method returns
directly after processing.
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