čt 6. 7. 2023 v 16:16 odesílatel gzh <gzhco...@126.com> napsal:
> Thank you very much for taking the time to reply to my question.
> I added oracle to search_path, but it didn't work.
>
> postgres=# show search_path;
> search_path
> -------------------------------------
> "$user", public, oracle, pg_catalog
>
this is different issue
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> At 2023-07-06 19:36:49, "Erik Wienhold" <e...@ewie.name> wrote:
> >> On 06/07/2023 11:19 CEST gzh <gzhco...@126.com> wrote:
> >>
> >> I upgraded the version of PostgreSQL from 12.6 to 12.13,
> >> when I execute the sql below , the to_char function caused the following
> >> error.
> >>
> >> ---------------SQL------------------
> >> select TO_CHAR('1000000');
> >>
> >> ERROR: function to_char(unknown) is not unique at character 8
> >> HINT: Could not choose a best candidate function. You might need to add
> >> explicit type casts.
> >>
> >> There is no problem before the upgrade and to_char function comes from the
> >> Orafce extension.
> >> The configuration of the old and new databases is as follows.
> >>
> >> Database server (old): PostgreSQL 12.6（orafce3.13）
> >> Database server (new): PostgreSQL 12.13（orafce3.24）
> >>
> >> The new database has successfully installed the orafce 3.24 extension.
> >> It does not occur in "PostgreSQL 12.6 and orafce 3.13",
> >> but occurs in "PostgreSQL 12.13 and orafce 3.24",
> >> so either the difference between 12.6 and 12.13 or the difference between
> >> orafce 3.13 and 3.24 is suspicious.
> >>
> >> What is the reason for the problem and how to fix the error?
> >
> >This rings a bell:
> >
> >https://www.postgresql.org/message-id/1597875806.606392.1681915893771%40office.mailbox.org
> >
> >Either qualify functions with namespace oracle, e.g.
> >oracle.to_char('1000000'),
> >or place oracle on the search path.
> >
> >--
> >Erik
>
>
