[GitHub] [flink] wangxlong opened a new pull request #9674: [FLINK-14046] [Table]Ignore case when defining data types with DDL

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wangxlong opened a new pull request #9674: [FLINK-14046] [Table]Ignore case when defining data types with DDL
URL: https://github.com/apache/flink/pull/9674
 
 
   ## What is the purpose of the change
   This commit fix the case sensitivity when we define data type with lowcase. The corresponding issue: https://issues.apache.org/jira/browse/FLINK-14046
   This will be more helpful for user to use DDL and improve user experience
   
   ## Verifying this change
   add toUpperCase() in TypeStringUtils.convertType() method, and add a test case
   
   ## 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, Yarn/Mesos, ZooKeeper: (no)
     - The S3 file system connector: (no)
   
   ## Documentation
     - Does this pull request introduce a new feature? (no)
   

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