lincoln lee created FLINK-36000:
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Summary: DynamicTableSink#Context's getTargetColumns should not
return an array of zero length
Key: FLINK-36000
URL: https://issues.apache.org/jira/browse/FLINK-36000
Project: Flink
Issue Type: Bug
Components: Table SQL / Planner
Affects Versions: 1.19.1, 1.20.0
Reporter: lincoln lee
Assignee: lincoln lee
Fix For: 2.0.0
The interface [`Optional<int[][]> getTargetColumns()`
|https://github.com/apache/flink/blob/master/flink-table/flink-table-common/src/main/java/org/apache/flink/table/connector/sink/DynamicTableSink.java#L192]
is expected to return an Optional#empty() for a sql statement without
specifying a column list, e.g., 'insert into t1 select ...',
but the current implemantation will return an int[0] in such cases, this is
unexpected.
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