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authorDean Rasheed <dean.a.rasheed@gmail.com>2024-02-29 15:56:59 +0000
committerDean Rasheed <dean.a.rasheed@gmail.com>2024-02-29 15:56:59 +0000
commit5f2e179bd31e5f5803005101eb12a8d7bf8db8f3 (patch)
tree838a9f273c1d3d825db322161c0b8cdf3fbb0ce1 /src/backend/storage/buffer/buf_init.c
parent8b29a119fdaa381d6f75105f539b1e658c0f8cdb (diff)
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Support MERGE into updatable views.
This allows the target relation of MERGE to be an auto-updatable or trigger-updatable view, and includes support for WITH CHECK OPTION, security barrier views, and security invoker views. A trigger-updatable view must have INSTEAD OF triggers for every type of action (INSERT, UPDATE, and DELETE) mentioned in the MERGE command. An auto-updatable view must not have any INSTEAD OF triggers. Mixing auto-update and trigger-update actions (i.e., having a partial set of INSTEAD OF triggers) is not supported. Rule-updatable views are also not supported, since there is no rewriter support for non-SELECT rules with MERGE operations. Dean Rasheed, reviewed by Jian He and Alvaro Herrera. Discussion: https://postgr.es/m/CAEZATCVcB1g0nmxuEc-A+gGB0HnfcGQNGYH7gS=7rq0u0zOBXA@mail.gmail.com
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