Jeff Zhang created FLINK-13951:
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Summary: Unable to call limit without sort for batch mode
Key: FLINK-13951
URL: https://issues.apache.org/jira/browse/FLINK-13951
Project: Flink
Issue Type: Improvement
Components: Table SQL / API
Affects Versions: 1.9.0
Reporter: Jeff Zhang
Here's the sample code: tenv.sql(select * from a).fetch(n)
{code:java}
Fail to run sql command: select * from a
org.apache.flink.table.api.ValidationException: A limit operation must be
preceded by a sort operation.
at
org.apache.flink.table.operations.utils.factories.SortOperationFactory.validateAndGetChildSort(SortOperationFactory.java:117)
at
org.apache.flink.table.operations.utils.factories.SortOperationFactory.createLimitWithFetch(SortOperationFactory.java:102)
at
org.apache.flink.table.operations.utils.OperationTreeBuilder.limitWithFetch(OperationTreeBuilder.java:388)
at org.apache.flink.table.api.internal.TableImpl.fetch(TableImpl.java:406)
{code}
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