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https://issues.apache.org/jira/browse/FLINK-32587?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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jasonliangyc reopened FLINK-32587:
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added more information
> The results returned from the CDC sql query are null or the value was changed
> unexpectly
> ----------------------------------------------------------------------------------------
>
> Key: FLINK-32587
> URL: https://issues.apache.org/jira/browse/FLINK-32587
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Client
> Affects Versions: 1.17.0, 1.17.1
> Reporter: jasonliangyc
> Priority: Critical
> Attachments: image-2023-07-13-17-35-32-235.png,
> image-2023-07-13-17-37-56-908.png, image-2023-07-21-14-48-31-572.png
>
>
> I created a CDC table(the sqlserver source table has more than 100 columns)
> as below and then run the query 'select * from so_cdc' through sql-client, it
> gives me the unexpected results.
> {code:java}
> CREATE TABLE so_cdc (
> REC_ID STRING,
> Create_Date TIMESTAMP(3),
> PRIMARY KEY (REC_ID) NOT ENFORCED
> ) WITH (
> 'connector' = 'sqlserver-cdc',
> 'hostname' = 'xxxx',
> 'port' = 'xxxx',
> 'username' = 'xxx',
> 'password' = 'xxxx',
> 'database-name' = 'xxxx',
> 'schema-name' = 'xxxx',
> 'table-name' = 'xxx',
> 'scan.startup.mode' = 'latest-offset'
> ); {code}
> Run the query for the first time, the data look normal.
> !image-2023-07-13-17-35-32-235.png|width=535,height=141!
>
> But after i run the same query multiple times, it gives me the unexpected
> data, and i'm sure that these two columns of my sqlserver source table don't
> contain these data.
> And i found that the values of 'REC_ID' were actually the values of another
> column in the sqlserver source table, it seems the query retruned the wrong
> columns.
> Above sqlserver source table is in the production database and i can't
> reproduce the same issue in dev db.
> !image-2023-07-21-14-48-31-572.png|width=533,height=159!
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