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JinxinTang commented on FLINK-17657: ------------------------------------ hi, [~zhanglun], Could you please provide code detail to reproduce this issus, it seems ok in my side, here is my code piece:[code piece|https://github.com/TJX2014/flink/blob/master-flink17657-jdbc-bigint/flink-examples/flink-examples-batch/src/main/scala/org/apache/flink/examples/scala/jdbc/ReadMysql.scala] > 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: 1.10.0, 1.10.1 > Reporter: lun zhang > Priority: Major > Fix For: 1.11.0 > > Attachments: env.yaml, excetion.txt > > > 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 > > MySQL table: > > create table tb > ( > id BIGINT UNSIGNED auto_increment > primary key, > cooper BIGINT(19) null , > user_sex VARCHAR(2) null > ); > > my env yaml is env.yaml . -- This message was sent by Atlassian Jira (v8.3.4#803005)