snuyanzin commented on PR #24253:
URL: https://github.com/apache/flink/pull/24253#issuecomment-1933613412

   Out of curiocity: I didn't find tests for nested arrays/maps/row... Are they 
out of scope?
   
   I mean e.g. this
   ```sql
         CREATE TABLE A (
           a MAP<STRING NOT NULL, MAP<STRING NOT NULL>>,
           ts TIMESTAMP(3),
           WATERMARK FOR ts AS ts
         ) WITH (
           'connector' = 'values'
         );
         
         CREATE TABLE B (
           id INT,
           ts TIMESTAMP(3),
           WATERMARK FOR ts AS ts
         ) WITH (
           'connector' = 'values'
         );
   ```
   and 
   ```sql
   SELECT * FROM A LEFT JOIN B FOR SYSTEM_TIME AS OF A.ts AS b ON 
A.a['ID']['ID_NESTED'] = id
   ```


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