raminqaf commented on code in PR #29311:
URL: https://github.com/apache/flink/pull/29311#discussion_r4153452952
##########
flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/utils/LogicalTypeCasts.java:
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@@ -403,6 +403,33 @@ public final class LogicalTypeCasts {
.explicitFromFamily(EXACT_NUMERIC, CHARACTER_STRING)
.build();
+ //
-----------------------------------------------------------------------------------------
+ // VARIANT type
+ //
-----------------------------------------------------------------------------------------
+
+ // Only a type with a VARIANT kind that holds its value without loss
casts to VARIANT.
+ castTo(VARIANT)
Review Comment:
Good point. I added a test and a docs sentence rather than rejecting it.
Byte equality is not specific to the cast.
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