Re: ERROR: query has no destination for result data

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От Pavel Stehule
Тема Re: ERROR: query has no destination for result data
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Msg-id CAFj8pRB8pL8QrjwH5mYiuP2bmHEe-Z8cVSL1ioYDLYXMwmidNQ@mail.gmail.com
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Ответ на Re: ERROR: query has no destination for result data  (Peter Kroon <plakroon@gmail.com>)
Ответы Re: ERROR: query has no destination for result data  (Peter Kroon <plakroon@gmail.com>)
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2012/11/23 Peter Kroon <plakroon@gmail.com>:
> So this means it's unable to return data?

yes, it means :(

DO "is" void function, so you cannot to return anything

Regards

Pavel Stehule

>
>
> 2012/11/23 Bartosz Dmytrak <bdmytrak@gmail.com>
>>
>> Hi,
>> according to doc: http://www.postgresql.org/docs/9.2/static/sql-do.html
>> DO returns void:
>> "The code block is treated as though it were the body of a function with
>> no parameters, returning void."
>>
>> Regars
>> Bartek
>>
>> Pozdrawiam,
>> Bartek
>>
>>
>>
>> 2012/11/23 Peter Kroon <plakroon@gmail.com>
>>>
>>> Hello,
>>>
>>> I wish to return the SELECT statement.
>>> Ho can I achieve this?
>>>
>>> DO $$
>>>
>>> DECLARE v_some_id int=14;
>>>
>>> BEGIN
>>> /*
>>> more queries here...
>>> */
>>> SELECT 'this is text';
>>> END
>>> $$ LANGUAGE plpgsql;
>>>
>>> Best,
>>> Peter Kroon
>>>
>>
>


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