详细的异常打印信息如下：
java.sql.BatchUpdateException: [30000,
2021060816420017201616500303151172306] cannot update pk column UID to expr
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.cj.util.Util.handleNewInstance(Util.java:192)
at com.mysql.cj.util.Util.getInstance(Util.java:167)
at com.mysql.cj.util.Util.getInstance(Util.java:174)
at
com.mysql.cj.jdbc.exceptions.SQLError.createBatchUpdateException(SQLError.java:224)
at
com.mysql.cj.jdbc.ClientPreparedStatement.executeBatchedInserts(ClientPreparedStatement.java:755)
at
com.mysql.cj.jdbc.ClientPreparedStatement.executeBatchInternal(ClientPreparedStatement.java:426)
at com.mysql.cj.jdbc.StatementImpl.executeBatch(StatementImpl.java:796)
at
org.apache.flink.connector.jdbc.statement.FieldNamedPreparedStatementImpl.executeBatch(FieldNamedPreparedStatementImpl.java:65)
at
org.apache.flink.connector.jdbc.internal.executor.TableSimpleStatementExecutor.executeBatch(TableSimpleStatementExecutor.java:64)
at
org.apache.flink.connector.jdbc.internal.executor.TableBufferReducedStatementExecutor.executeBatch(TableBufferReducedStatementExecutor.java:101)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.attemptFlush(JdbcBatchingOutputFormat.java:216)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.flush(JdbcBatchingOutputFormat.java:184)
at
org.apache.flink.connector.jdbc.internal.JdbcBatchingOutputFormat.lambda$open$0(JdbcBatchingOutputFormat.java:128)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at
java.util.concurrent.FutureTask.runAndReset$$$capture(FutureTask.java:308)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
at
java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
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