Re:

Actually, as stated in my first note, this is what I've done to fix the
select 2 (select trim(1);) but after creating this function/cast the select
1 (select 'teste'||1;) started not working.

On Wed, May 15, 2013 at 4:24 PM, AI Rumman <rummandba(at)gmail(dot)com> wrote:

> Create the functions:
> CREATE FUNCTION pg_catalog.text(integer) RETURNS text STRICT IMMUTABLE
> LANGUAGE SQL AS 'SELECT textin(int4out($1));';
> CREATE CAST (integer AS text) WITH FUNCTION pg_catalog.text(integer) AS
> IMPLICIT;
>
> http://www.rummandba.com/2010/10/migrate-database-from-postgresql-81-to.html
>
> It'll work.
>
>
> On Wed, May 15, 2013 at 3:17 PM, Carlos Henrique Reimer <
> carlos(dot)reimer(at)opendb(dot)com(dot)br> wrote:
>
>> Hi,
>>
>> Currently, our application is still using PG 8.2 and we are trying to use
>> 9.2 but there are some problems related with the implicit casts removed on
>> 8.3.
>>
>> Example:
>>
>> 1) select 'teste'||1;
>> 2) select trim(1);
>>
>> Select 1 & 2 does run fine on 8.2 but in 9.2 select 1 is ok and select 2
>> got an error due the fact implicit cast were removed on PG 8.3:
>>
>> ERROR: function pg_catalog.btrim(integer) does not exist
>> LINE 1: select trim(1);
>> ^
>> HINT: No function matches the given name and argument types. You might
>> need to add explicit type casts.
>>
>> ********** Error **********
>>
>> ERROR: function pg_catalog.btrim(integer) does not exist
>> SQL state: 42883
>> Hint: No function matches the given name and argument types. You might
>> need to add explicit type casts.
>> Character: 8
>>
>> Recreated the implicit cast for select 2:
>>
>> CREATE FUNCTION pg_catalog.text(integer) RETURNS text STRICT IMMUTABLE
>> LANGUAGE SQL AS 'SELECT textin(int4out($1));';
>> CREATE CAST (integer AS text) WITH FUNCTION pg_catalog.text(integer) AS
>> IMPLICIT;
>>
>> Now select 2 works fine but select 1 gets an error:
>>
>> ERROR: operator is not unique: unknown || integer
>> LINE 1: select 'teste'||1;
>> ^
>> HINT: Could not choose a best candidate operator. You might need to add
>> explicit type casts.
>>
>> ********** Error **********
>>
>> ERROR: operator is not unique: unknown || integer
>> SQL state: 42725
>> Hint: Could not choose a best candidate operator. You might need to add
>> explicit type casts.
>> Character: 15
>>
>>
>> Is there a way to make both selects work on PG 9.2 without explicit casts?
>>
>> Thank you in advace!
>>
>> --
>> Reimer
>> 47-3347-1724 47-9183-0547 msn: carlos(dot)reimer(at)opendb(dot)com(dot)br
>>
>
>

--
Reimer
47-3347-1724 47-9183-0547 msn: carlos(dot)reimer(at)opendb(dot)com(dot)br