twalthr commented on code in PR #19648:
URL: https://github.com/apache/flink/pull/19648#discussion_r867997689
##########
flink-table/flink-table-planner/src/main/java/org/apache/flink/table/planner/functions/utils/SqlValidatorUtils.java:
##########
@@ -76,9 +80,25 @@ private static void adjustTypeForMultisetConstructor(
}
private static SqlNode castTo(SqlNode node, RelDataType type) {
- return SqlStdOperatorTable.CAST.createCall(
- SqlParserPos.ZERO,
- node,
-
SqlTypeUtil.convertTypeToSpec(type).withNullable(type.isNullable()));
+ final SqlDataTypeSpec dataTypeSpec;
+ if (SqlTypeUtil.isMap(type)) {
Review Comment:
Btw in
`org.apache.flink.table.planner.functions.inference.TypeInferenceOperandChecker#castTo`
we would have a similar issue, correct?
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