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https://issues.apache.org/jira/browse/FLINK-23324?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17381190#comment-17381190
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Leonard Xu commented on FLINK-23324:
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Thanks [~ana4] for the detail report, it's a bug as we discussed offline.
> Postgres of JDBC Connector enable case-sensitive.
> -------------------------------------------------
>
> Key: FLINK-23324
> URL: https://issues.apache.org/jira/browse/FLINK-23324
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Affects Versions: 1.13.1, 1.12.4
> Reporter: Ada Wong
> Priority: Major
>
> Now the PostgresDialect is case-insensitive. I think this is a bug.
> https://stackoverflow.com/questions/20878932/are-postgresql-column-names-case-sensitive
> https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
> Could we delete PostgresDialect#quoteIdentifier, make it using super class.
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