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  1. Flink
  2. FLINK-20787 Improve the Table API to make it usable
  3. FLINK-19038

It doesn't support to call Table.limit() continuously

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      For example, table.limit(3).limit(2) will failed with "FETCH is already defined."

      org.apache.flink.table.api.ValidationException: FETCH is already defined.
      
      	at org.apache.flink.table.operations.utils.SortOperationFactory.validateAndGetChildSort(SortOperationFactory.java:125)
      	at org.apache.flink.table.operations.utils.SortOperationFactory.createLimitWithFetch(SortOperationFactory.java:105)
      	at org.apache.flink.table.operations.utils.OperationTreeBuilder.limitWithFetch(OperationTreeBuilder.java:418)
      

      However, as we support to call table.limit() without specifying the order, I guess this should be a valid usage and should be allowed.

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              • Assignee:
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                Reporter:
                dian.fu Dian Fu
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                • Created:
                  Updated: