问题
Running this procedure causes MySQL (or phpMyAdmin) to freeze. I have to stop MySQL with from XAMPP command, which freezes and "is not responding" about 20 seconds before stopping. I believe this is caused by the delimiter command, which on it's own begins the problems. I have tried using a different delimiter ("//") to no effect.
DELIMITER $
CREATE TRIGGER coroner AFTER INSERT ON events
FOR EACH ROW BEGIN
UPDATE teams WHERE id = NEW.victim SET live = live-1;
UPDATE teams WHERE id = NEW.shooter SET score = score+points;
END
$
DELIMITER ;
回答1:
As it turns out, phpMyAdmin has a field marked "delimiter:" below the SQL query box. Using it rather than the command solves the problem. Further research explains that "DELIMITER" is not a SQL command, but a command generally implemented by all SQL ui's.
回答2:
the update command should:
update teams set live = live-1 where id = new.victim;
update teams where id = new.shooter set score = score+points;
the where after the set clause
来源：https://stackoverflow.com/questions/2068331/mysql-phpmyadmin-freezes-from-delimiter