[jira] [Created] (FLINK-21285) Support MERGE INTO for flink sql

[Shang Yuanchun (Jira)]

Jun Zhang created FLINK-21285:
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             Summary: Support  MERGE INTO for flink sql
                 Key: FLINK-21285
                 URL: https://issues.apache.org/jira/browse/FLINK-21285
             Project: Flink
          Issue Type: Improvement
          Components: Table SQL / API
    Affects Versions: 1.12.1
            Reporter: Jun Zhang
             Fix For: 1.13.0


Support MERGE INTO for flink sql,refer to hive syntax:
{code:java}
MERGE INTO <target table> AS T USING <source expression/table> AS S
ON <boolean expression1>
WHEN MATCHED [AND <boolean expression2>] THEN UPDATE SET <set clause list>
WHEN MATCHED [AND <boolean expression3>] THEN DELETE
WHEN NOT MATCHED [AND <boolean expression4>] THEN INSERT VALUES<value list>
{code}



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