Re: Retrieve the column values of a record without knowing the names - Mailing list pgsql-sql

From Dmitriy Igrishin
Subject Re: Retrieve the column values of a record without knowing the names
Date
Msg-id AANLkTi=rqcZjF=Q3pcoTyMdLXcAvxLfKOqOOSdw3YFK1@mail.gmail.com
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In response to Retrieve the column values of a record without knowing the names  (arthur_info <arthur_info@yahoo.com.br>)
Responses Re: Retrieve the column values of a record without knowing the names
List pgsql-sql
Hey,

2011/2/16 arthur_info <arthur_info@yahoo.com.br>

Hello,

I've got the following function and I want to access the fields values of my
record by index. The problem is that my select is retrieving each record
line with all values and not each one of each row on my view... How can I
solve this problem?
You can easily iterate across records from PL/pgSQL by using hstore, e.g:
SELECT (avals(hstore(ROW(83,6,4))))[3];
dmitigr=> SELECT (avals(hstore(ROW(83,6,4))))[3] AS thirdfield;
 thirdfield
------------
 4
(1 row)

See http://www.postgresql.org/docs/9.0/static/hstore.html
 

Thanks in advance.


CREATE FUNCTION fc_teste_tce(aluno integer) RETURNS character varying AS
$BODY$
DECLARE
 reg record;
BEGIN
 for reg in execute 'SELECT ARRAY (SELECT vw_teste_tce FROM
estagio.vw_teste_tce where aluno = ''3043'' LIMIT 20) AS campos' loop
   for j in 1..array_upper(reg.campos,1) loop
     raise notice 'Field Value: %',reg.campos[j];
   end loop;
 end loop;
 return 'ok';
END;
$BODY$

LANGUAGE plpgsql VOLATILE;


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// Dmitriy.


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