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	Sat, 20 Aug 2005 11:25:16 GMT
Date: Sat, 20 Aug 2005 11:25:16 +0000 (GMT)
From: Halley Pacheco de Oliveira <halleypo@yahoo.com.br>
Subject: Re: SQL CASE Statements
To: pgsql-sql@postgresql.org
Cc: lvaningen@esncc.com
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> Has anybody done this? If so, can you send me a sample?

CREATE TEMPORARY TABLE fruits (id SERIAL, name TEXT);
INSERT INTO fruits VALUES (DEFAULT, 'banana');
INSERT INTO fruits VALUES (DEFAULT, 'apple');
CREATE TEMPORARY TABLE food (id SERIAL, name TEXT);
INSERT INTO food VALUES (DEFAULT, 'apple');
INSERT INTO food VALUES (DEFAULT, 'spinach');
SELECT name, CASE WHEN name = ANY (SELECT name FROM fruits)
                  THEN 'yes'
                  ELSE 'no'
             END AS fruit
FROM food;

  name   | fruit
---------+-------
 apple   | yes
 spinach | no
(2 lines)


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