Re: BUG #17206: the function array_cat(anyarray, anyarray) does not exist - Mailing list pgsql-bugs

From David Turoň
Subject Re: BUG #17206: the function array_cat(anyarray, anyarray) does not exist
Date
Msg-id 13T.5{S3.6C2WnHnPYu}.1YzDSc@scif.cz
Whole thread Raw
In response to BUG #17206: the function array_cat(anyarray, anyarray) does not exist  (PG Bug reporting form <noreply@postgresql.org>)
List pgsql-bugs
Hi,

anycompatible didn't accept anyarray. Example from system catalogs:

SELECT most_common_freqs[
    array_position(most_common_vals::text::text[],'range_ops'::text)
] * 100 AS occurrence_percent  
FROM pg_stats 
WHERE schemaname='pg_catalog' AND tablename ='pg_opfamily' AND attname='opfname';
 occurrence_percent 
--------------------
 2.7397260069847107


must be cast to text::text[] without cast:
ERROR:  function array_position(anyarray, text) does not exist

Is bug that function with anycompatiblearray didn't accept anyarray data type? 

regards, David Turoň

---------- Původní e-mail ----------
Od: Tom Lane <tgl@sss.pgh.pa.us>
Komu: David G. Johnston <david.g.johnston@gmail.com>
Kopie: edouard.hibon@free.fr, PostgreSQL mailing lists <pgsql-bugs@lists.postgresql.org>
Datum: 11. 8. 2022 12:02:17
Předmět: Re: BUG #17206: the function array_cat(anyarray, anyarray) does not exist
"David G. Johnston" <david.g.johnston@gmail.com> writes:
> On Thu, Sep 30, 2021 at 2:51 PM PG Bug reporting form <
> noreply@postgresql.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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