回复：[Internet]Re: Re: 回复：Re: [PATCH] Pr event replacement of a function if it's used in an index expression and is not IMMUTABLE

Dear David, Thank you very much for your feedback and clarification. We now realize that the current immutability mechanism in PostgreSQL has been established for a long time, and changing it at this point would not only be difficult but also risk breaking backward compatibility. We appreciate y

回复：[Internet]Re: [PATCH] Prevent replacement of a function if it's used in an index expression and is not IMMUTABLE

Hi hackers, Thanks for the valuable feedback on my previous patch. Based on the review comments, I have updated the patch as follows: - Limited the error trigger only to the case where the original function is IMMUTABLE but the new definition is not. - Changed the error code to ERRCODE_FEATURE_N

[PATCH] Prevent replacement of a function if it's used in an index expression and is not IMMUTABLE

Hi hackers, The purpose of this patch is to prevent replacing a function via `CREATE OR REPLACE FUNCTION` with a new definition that is not marked as `IMMUTABLE`, if the existing function is referenced by an index expression. Replacing such functions may lead to index corruption or runtime sema