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https://issues.apache.org/jira/browse/AIRFLOW-4734?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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William Tran resolved AIRFLOW-4734.
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Resolution: Implemented
> Upsert functionality for PostgresHook.insert_rows()
> ---------------------------------------------------
>
> Key: AIRFLOW-4734
> URL: https://issues.apache.org/jira/browse/AIRFLOW-4734
> Project: Apache Airflow
> Issue Type: Improvement
> Components: hooks
> Affects Versions: 1.10.3
> Reporter: William Tran
> Assignee: William Tran
> Priority: Minor
> Labels: features
> Fix For: 2.0.0
>
> Original Estimate: 48h
> Remaining Estimate: 48h
>
> PostgresHook's parent class, DbApiHook, implements upsert in its
> insert_rows() method with the replace=True flag. However, the underlying
> generated SQL is specific to MySQL's "REPLACE INTO" syntax and is not
> applicable to Postgres.
> I'd like to override this method in PostgresHook to implement the "INSERT ...
> ON CONFLICT DO UPDATE" syntax (new since Postgres 9.5)
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