zjureel opened a new pull request, #383:
URL: https://github.com/apache/flink-table-store/pull/383

   At present, the table store does not verify the primary key type. Users can 
create primary keys on any data type. Some primary key types such as array, 
map, etc. are meaningless. 
   
   This PR refers to the primary key type of hive in 
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-CreateTableCreate/Drop/TruncateTable
 , and restricts the primary key type of the table store.


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