Re: BUG #17206: the function array_cat(anyarray, anyarray) does not exist

Thank you Tom and David for your clear answer, I'm going to read more
carefully the v14 compatibility notes !
BR
Edouard

Le 01/10/2021 à 01:52, Tom Lane a écrit :
> "David G. Johnston" <david(dot)g(dot)johnston(at)gmail(dot)com> writes:
>> On Thu, Sep 30, 2021 at 2:51 PM PG Bug reporting form <
>> noreply(at)postgresql(dot)org> wrote:
>>> I get the ERROR : the function array_cat(anyarray, anyarray) does not
>>> exist,
>> You may find this commit to be illuminating. Work was done in this area
>> for v14.
>> https://github.com/postgres/postgres/commit/97f73a978fc1aca59c6ad765548ce0096d95a923
> This one might be more so:
>
> https://git.postgresql.org/gitweb/?p=postgresql.git&a=commitdiff&h=9e38c2bb50
>
> Also see the very first item in the v14 compatibility notes:
>
> User-defined objects that reference certain built-in array functions
> along with their argument types must be recreated (Tom Lane)
>
> Specifically, array_append(), array_prepend(), array_cat(),
> array_position(), array_positions(), array_remove(), array_replace(),
> and width_bucket() used to take anyarray arguments but now take
> anycompatiblearray. Therefore, user-defined objects like aggregates
> and operators that reference those array function signatures must be
> dropped before upgrading, and recreated once the upgrade completes.
>
> regards, tom lane

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