githubMJ opened a new pull request #15788:
URL: https://github.com/apache/flink/pull/15788
> ## What is the purpose of the change
>
> Flink Table Enventment Parsr Hive Drop Partitions Syntax unparse is Error
>
> ## Brief change log
> * Flink Table Parser is error Synopsis:
> * SQL：
> `alter table tbl drop partition (p1='a',p2=1), partition(p1='b',p2=2);`
> * Hive Multiple partitions unparse toSqlString is error,Missing comma in
Partition SqlNodeList
> * In Flink Table Hive Env syntax：
> `ALTER TABLE tbl
DROP
PARTITION (`P1` = 'a', `P2` = 1)
PARTITION (`P1` = 'b', `P2` = 2)`
> * The right hive syntax ：
>`ALTER TABLE tbl
DROP
PARTITION (`P1` = 'a', `P2` = 1),
PARTITION (`P1` = 'b', `P2` = 2)`
> ## Verifying this change
> This change is a trivial rework / code cleanup without any test coverage.
>
> ## Does this pull request potentially affect one of the following parts:
> * Dependencies (does it add or upgrade a dependency): no
> * The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
> * The serializers: no
> * The runtime per-record code paths (performance sensitive): no
> * Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: no
> * The S3 file system connector: no
>
> ## Documentation
> * Does this pull request introduce a new feature? no
> * If yes, how is the feature documented? not applicable
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