[FLINK-22942] Disable upsert into syntax in Flink SQL

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.15.0
• Component/s: Table SQL / API
• Labels: pull-request-available

Release Note

Disabled UPSERT INTO statement. UPSERT INTO syntax was exposed by mistake in previous releases without detailed discussed. From this release every UPSERT INTO is going to throw an exception. Users of UPSERT INTO should use the documented INSERT INTO statement instead.

• Assignee: Francesco Guardiani
• Reporter: Leonard Xu
• Created: 09/Jun/21 08:07
• Updated: 23/Sep/21 09:10
• Resolved: 23/Sep/21 09:10

Description

I found we can write  insert into and upsert into in Flink SQL， but the later syntax's semantic and behavior is never discussed, currently they have same implementation.

We should disable the later one util we support  `upsert into ` with correct behavior.

Issue Links

• links to: GitHub Pull Request #17204