snuyanzin commented on code in PR #29101:
URL: https://github.com/apache/flink/pull/29101#discussion_r3941115202
##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/utils/LogicalTypeCasts.java:
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@@ -687,6 +698,15 @@ private static boolean supportsCasting(
// BITMAP can only be cast to BYTES (unbounded VARBINARY), because
trimming or padding
// would corrupt the serialized bitmap data.
return allowExplicit && getLength(targetType) ==
VarBinaryType.MAX_LENGTH;
+ } else if (sourceRoot == UUID && targetRoot == BINARY) {
Review Comment:
I feel like we miss vise versa case...
as a result
```sql
SELECT CAST(UUID '550e8400-e29b-41d4-a716-446655440000' AS BINARY(10)); --
fails with validation exception
```
and this
```sql
SELECT CAST(CAST(x'01020304050607080910' AS BINARY(10)) AS UUID); -- fail
with runtime exception
```
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