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DROP TABLE IF EXISTS test1;
DROP TABLE IF EXISTS test2;
CREATE TABLE test1 (
ID int(11) NOT NULL auto_increment,
NAME varchar(75) DEFAULT '' NOT NULL,
LINK_ID int(11) DEFAULT '0' NOT NULL,
PRIMARY KEY (ID),
KEY NAME (NAME),
KEY LINK_ID (LINK_ID)
);
INSERT INTO test1 (ID, NAME, LINK_ID) VALUES (1,'Mike',0);
INSERT INTO test1 (ID, NAME, LINK_ID) VALUES (2,'Jack',0);
INSERT INTO test1 (ID, NAME, LINK_ID) VALUES (3,'Bill',0);
CREATE TABLE test2 (
ID int(11) NOT NULL auto_increment,
NAME varchar(150) DEFAULT '' NOT NULL,
PRIMARY KEY (ID),
KEY NAME (NAME)
);
@r/sel000100.result SELECT DISTINCT
test2.id AS key_link_id,
test2.name AS link
FROM test1
LEFT JOIN test2 ON test1.link_id=test2.id
GROUP BY test1.id
ORDER BY link;
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