On Tue, Jul 22, 2025 at 01:15:16PM -0500, Sami Imseih wrote: > The GUC serves multiple purposes. For example,I can create an index as > invisible > and use it in a controlled way, which is helpful for experimenting > with a new index.
An in-core GUC to control the list of indexes that should be allowed or disallowed is I think asking for trouble, adding schema-related knowledge directly into the GUC machinery. This does not scale well, even if you force all the entries to be specified down to the database and the schema. And it makes harder to control what a "good" behavior should be at query-level. My 2c. -- Michael
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