Re: Howto return values from a function
От | A B |
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Тема | Re: Howto return values from a function |
Дата | |
Msg-id | dbbf25900805152319h27d83715p774cb18f021c70d5@mail.gmail.com обсуждение исходный текст |
Ответ на | Re: Howto return values from a function (Martijn van Oosterhout <kleptog@svana.org>) |
Ответы |
Re: Howto return values from a function
Re: Howto return values from a function Re: Howto return values from a function |
Список | pgsql-general |
> How you generate the results is up to you. when you have them you > either use RETURN NEXT or RETURN QUERY to return them to the caller. Now I get the reply ERROR: set-valued function called in context that cannot accept a set CONTEXT: PL/pgSQL function "actionlist" line 11 at return next and here is the function (and a datatype that is used for the return values) CREATE TYPE Ttelnr_action AS ( nr VARCHAR(30), action CHAR(1) ); CREATE OR REPLACE FUNCTION actionlist(tid_ TIMESTAMP) RETURNS SETOF Ttelnr_action AS $$ DECLARE rec RECORD; result Ttelnr_action; BEGIN FOR rec IN SELECT DISTINCT custid,nr,action FROM Actions LOOP IF rec.action = 'view_important_message' THEN result.nr := rec.nr; result.action := 'd'; RETURN NEXT result; ELSIF rec.action = 'download_movie' THEN result.nr := rec.nr; result.action := 'v'; RETURN NEXT result; END IF; END LOOP; RETURN; END; $$ LANGUAGE plpgsql;
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