Subject: EXECUTE with SELECT INTO variable, or alternatives
From: Mario Splivalo <mario.splivalo@mobart.hr>
Reply-To: mario.splivalo@mobart.hr
To: pgsql-sql@postgresql.org
Content-Type: text/plain
Organization: Mob-Art
Date: Thu, 29 Sep 2005 20:16:44 +0200
Message-Id: <1128017805.9061.5.camel@localhost.localdomain>
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I can assign a value to a variable in several ways:

myVar := (SELECT col FROM table WHERE somecondition...)
myVar := col FROM table WHERE somecondtition...
SELECT col INTO myVar FROM table WHERE somecondition

How do I do any of the above using EXECUTE? I need to be able to assign
the value to a variable, a value returned by a querry on a temporary
table.

So far I have found workaround like this:

myRec record;

FOR rec IN EXECUTE ''SELECT col FROM table WHERE somecondition''
LOOP
	myVar := rec
END LOOP

Obviously, the above SELECT query returns only one row. Still, if is
realy inconvinient to have FOR...LOOP...END LOOP construct for assigning
the value to a variable 'read' from the temporary table.

	Mario