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https://issues.apache.org/jira/browse/AIRFLOW-3945?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tao Feng resolved AIRFLOW-3945.
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Resolution: Fixed
> Row of NULLs inserted when not changing permission views
> --------------------------------------------------------
>
> Key: AIRFLOW-3945
> URL: https://issues.apache.org/jira/browse/AIRFLOW-3945
> Project: Apache Airflow
> Issue Type: Bug
> Components: webserver
> Affects Versions: 1.10.2
> Reporter: Diederik Perdok
> Assignee: Diederik Perdok
> Priority: Minor
> Fix For: 1.10.3
>
>
> When creating new permission views in
> AirflowSecurityManager.create_custom_dag_permission_view in file
> airflow/www/security.py, the list of permission views to update might be
> empty because everything is still up to date. In that case, a row in which
> only the id is not NULL will still be inserted in table
> ab_permission_view_role every time.
> This is a minor bug when using PostgreSQL. When using a SQL Server backend,
> this causes the webserver to crash as SQL Server disallows multiple NULLs in
> a unique constraint (by default).
>
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