[jira] [Created] (FLINK-17657) jdbc not support read BIGINT UNSIGNED field

[Shang Yuanchun (Jira)]

lun zhang created FLINK-17657:
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             Summary: jdbc not support read BIGINT UNSIGNED field
                 Key: FLINK-17657
                 URL: https://issues.apache.org/jira/browse/FLINK-17657
             Project: Flink
          Issue Type: Bug
          Components: Connectors / JDBC, Table SQL / Client
    Affects Versions: 1.10.1, 1.10.0
            Reporter: lun zhang


I use sql client read mysql table, but I found I can't read a table contain `BIGINT UNSIGNED` field. It will 
Caused by: java.lang.ClassCastException: java.math.BigInteger cannot be cast to java.lang.Long



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