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https://issues.apache.org/jira/browse/FLINK-30030?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17634746#comment-17634746
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luoyuxia commented on FLINK-30030:
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Test with other database:
MySQL/MariaDB: will consider `db.tab` as a table named db.tab
PG/SQLServer: Seems backquote is not allowed.
> Unexpected behavior for overwrite in Hive dialect
> -------------------------------------------------
>
> Key: FLINK-30030
> URL: https://issues.apache.org/jira/browse/FLINK-30030
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Hive
> Affects Versions: 1.15.0
> Reporter: luoyuxia
> Priority: Major
> Labels: pull-request-available
>
> When overwrite a table in hive dialect, it might not overwrite but to append.
> It can reproduce using the following sql:
> {code:java}
> insert into table `db.tab` values (1, 2) {code}
> only happen when the table is encapsulated by backquote and the table contain
> two splits with ".".
>
> Just find the behavior in hive is also incorrect as reported in HIVE-26741.
> Let'us keep to see what's the expected behavior.
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