danny0405 commented on a change in pull request #11568: [FLINK-16779][table]
Add RAW type support in DDL and functions
URL: https://github.com/apache/flink/pull/11568#discussion_r404506126
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File path:
flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/planner/calcite/FlinkTypeFactory.scala
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@@ -484,6 +493,9 @@ object FlinkTypeFactory {
// CURSOR for UDTF case, whose type info will never be used, just a
placeholder
case CURSOR => new TypeInformationRawType[Nothing](new NothingTypeInfo)
+ case null if relDataType.isInstanceOf[RawRelDataType] =>
Review comment:
> Because Calcite assumes that an ANY type does not need further parameters
Calcite does not have such assumption. Maybe what you meant is a
`BasicSqlType` with `SqlTypeName.ANY` does not need further parameters.
The `SqlTypeName` is a way to categorize these `RelDataType`, it does not
indicates anything about the type instance itself.
I'm confused by "if this is actually not a SQL type", if we can use the
`RAW(...)` in DDL or other DQLs, it is a SQL type.
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