From: A. Kretschmer <andreas.kretschmer@schollglas.com>
To: pgsql-sql@postgresql.org
Subject: Re: in PlPgSQL function, how to use variable in a "select ...
Date: Fri, 17 Mar 2006 20:50:32 +0100
Message-ID: <20060317195031.GA8508@webserv.wug-glas.de> (raw)
In-Reply-To: <441B0CCD.9020704@encs.concordia.ca>
References: <441AF775.7060006@encs.concordia.ca>
<684362e10603170956j20174d07q@mail.gmail.com>
<441B0CCD.9020704@encs.concordia.ca>
am 17.03.2006, um 14:23:57 -0500 mailte Emi Lu folgendes:
> Does not work either, the whole function is:
>
> create table t1(col1 varchar(3), col2 varchar(100));
> insert into t1 values('001', 'Result 1');
> insert into t1 values('002', 'Result 2');
> insert into t1 values('003', 'Result 3');
>
> CREATE OR REPLACE FUNCTION test(VARCHAR) RETURNS VARCHAR AS $$
> DECLARE
> col1_value ALIAS FOR $1;
> cm_tableName st1_legend.code_map_tablename%TYPE;
> lengendTableName VARCHAR := 't1';
> query_value VARCHAR ;
> BEGIN
>
> SELECT INTO cm_tableName col2 FROM lengendTableName WHERE col1 =
> col1_value ;
This can't work, read the docu:
http://www.postgresql.org/docs/8.1/interactive/plpgsql-statements.html#PLPGSQL-STATEMENTS-EXECUTING-...
You should build a string with your SQL and EXECUTE this string.
HTH, Andreas
--
Andreas Kretschmer (Kontakt: siehe Header)
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Subject: Re: in PlPgSQL function, how to use variable in a "select ...
In-Reply-To: <20060317195031.GA8508@webserv.wug-glas.de>
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