Re: Trying to avoid a simple temporary variable declaration in a pl/pgsql function

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От Tom Lane
Тема Re: Trying to avoid a simple temporary variable declaration in a pl/pgsql function
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Msg-id 44911.1434812204@sss.pgh.pa.us
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Ответ на Trying to avoid a simple temporary variable declaration in a pl/pgsql function  ("David G. Johnston" <david.g.johnston@gmail.com>)
Ответы Re: Trying to avoid a simple temporary variable declaration in a pl/pgsql function  ("David G. Johnston" <david.g.johnston@gmail.com>)
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"David G. Johnston" <david.g.johnston@gmail.com> writes:
> I know this could be written quite easily in sql but was wondering if it is
> possible in pl/pgsql.

> CREATE FUNCTION test_func()
> RETURNS text
> LANGUAGE 'plpgsql'
> AS $$
> BEGIN
> SELECT 'text_to_return' INTO <what_goes_here?>; --with or without a cast
> RETURN <what_goes_here?>;
> END;
> $$;

> The goal is to return the value of text_to_return without declaring an
> explicit variable to name in the INTO clause.

INTO requires a declared variable as target.

However, I'm wondering why you don't just use "RETURN expression"
if this is all that will be in the function.

            regards, tom lane


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