[jira] [Created] (FLINK-14645) Data types defined in DDL will lose precision and nullability when converting to properties

["Jark Wu (Jira)" <ji...@apache.org>]

Jark Wu created FLINK-14645:
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             Summary: Data types defined in DDL will lose precision and nullability when converting to properties
                 Key: FLINK-14645
                 URL: https://issues.apache.org/jira/browse/FLINK-14645
             Project: Flink
          Issue Type: Sub-task
          Components: Table SQL / API
            Reporter: Jark Wu
             Fix For: 1.10.0


Currently, data types defined in DDL will be converted to {{TypeInformation}} and use {{TypeStringUtils}} to serialize/deserialize which will lose the precision and nullablitiy information. 

We can use {{LogicalType#asSerializableString}} and {{LogicalTypeParser}} to serialize/deserialize data types which keeps all the information. But we need to figure out how to keep compability with previous versions.



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