xuyangzhong opened a new pull request, #24275:
URL: https://github.com/apache/flink/pull/24275

   ## What is the purpose of the change
   
   The work about DESCRIBE CATALOG is not finished yet. This pr aims to support 
it when converting sql node and executing it. 
   See more at https://issues.apache.org/jira/browse/FLINK-34372.
   
   Note: This pr should not be merge into 1.19 as it is a feature.
   
   ## Brief change log
   
     - *Support DESCRIBE CATALOG when converting sql and executing*
     - *Add tests for this pr*
   
   ## Verifying this change
   
   Some tests are added to verify it.
   
   ## 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, ZooKeeper: no
     - The S3 file system connector: no
   
   ## Documentation
   
     - Does this pull request introduce a new feature? yes
     - If yes, how is the feature documented? later
   


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