2010/10/31 Alexander Farber <alexander.far...@gmail.com>:
> Thanks Pavel, but I have an SQL procedure and not plpgsql?

it's not possible in sql. But plpgsql is same level like stored
procedures language from mysql.

>
> On Sun, Oct 31, 2010 at 9:34 AM, Pavel Stehule <pavel.steh...@gmail.com> 
> wrote:
>>> But how can I detect that the UPDATE has failed in my SQL procedure?
>>>
>>
>> see: 
>> http://www.postgresql.org/docs/8.4/interactive/plpgsql-control-structures.html
>> near to end of page
>
>>>        create or replace function update_pref_users(id varchar,
>>>            first_name varchar, last_name varchar, female boolean,
>>>            avatar varchar, city varchar, last_ip inet) returns void as $$
>>>
>>>                update pref_users set
>>>                    first_name = $2,
>>>                    last_name = $3,
>>>                    female = $4,
>>>                    avatar = $5,
>>>                    city = $6,
>>>                    last_ip = $7
>>>                where id = $1;
>>>
>>>                -- XXX how to detect failure here? XXX
>>>
>>>                insert into pref_users(id, first_name, last_name,
>>>                    female, avatar, city, last_ip)
>>>                    values ($1, $2, $3, $4, $5, $6, $7);
>>>        $$ language sql;
>
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