Re: NO DATA FOUND Exception

From: "Fernando Hevia" <fhevia(at)ip-tel(dot)com(dot)ar>
To: "'Bart Degryse'" <Bart(dot)Degryse(at)indicator(dot)be>, <pgsql-sql(at)postgresql(dot)org>
Subject: Re: NO DATA FOUND Exception
Date: 2007-06-26 16:15:16
Message-ID: 053b01c7b80d$2ebb9740$8f01010a@iptel.com.ar
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>>"Fernando Hevia" <fhevia(at)ip-tel(dot)com(dot)ar> 2007-06-26 16:25 >>>
>>How do I refer a specific field of the returned row from outside the
>>function? How should I write the query in order to show only fields 1 and
3, for example?

>In case you would like to use set returning functions...

>if your function will return records with the same structure as an existing
>table
>CREATE FUNCTION my_func() RETURNS SETOF my_table AS ...

>if not you have to define the returning type
>CREATE TYPE func_row AS ("field1" varchar(10), "field2" integer, "field3"
>integer, ...)
>CREATE FUNCTION my_func() RETURNS SETOF func_row AS ...
>
>now you can use your function
>SELECT * FROM my_func();

>or

>SELECT A.field1, A.field2
>FROM my_func() A left join my_func() B on A.field2 = B.field3
>WHERE A.field1 like 'B%';

Exactly what I was looking for.
Thanks!!

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