Re: unable to call a function

Hello

2013/7/4 Adrian Klaver <adrian.klaver@gmail.com>:
> On 07/04/2013 10:14 AM, giozh wrote:
>>
>> something gone wrong the same...
>>
>> REATE OR REPLACE FUNCTION check_if_if_exist(id integer, table_name
>> character, table_column character)
>>    RETURNS boolean AS
>> $BODY$
>>
>> DECLARE res BOOLEAN;
>>
>> BEGIN
>>         EXECUTE 'SELECT EXISTS(SELECT * FROM'||table_name||
>>                 'WHERE'||table_column||'='||$1||')' INTO res USING id;
>>         RETURN res;
>> END;
>>
>> select check_if_exist(10, 'prova', 'identificatore');
>>
>>
>> RROR:  function check_if_exist(integer, unknown, unknown) does not exist
>> LINE 1: select check_if_exist(10, 'prova', 'identificatore');
>>                 ^
>> HINT:  No function matches the given name and argument types. You might
>> need
>> to add explicit type casts.
>>
>
> Got hung up on the function definition and skipped over the error message.
> Looks like Postgres is not seeing 'prova' and 'identificatore' as text.
>
> What happens if you do?:
>
>
> select check_if_exist(10, 'prova'::text, 'identificatore'::text);
>

there is wrong datatype

CREATE OR REPLACE FUNCTION check_if_if_exist(id integer, table_name
character, table_column character)

no "character" - use instead "text" or "varchar"

Regards

Pavel

> --
> Adrian Klaver
> adrian.klaver@gmail.com
>
>
>
> --
> Sent via pgsql-general mailing list (pgsql-general@postgresql.org)
> To make changes to your subscription:
> http://www.postgresql.org/mailpref/pgsql-general