MySQL基本触发器-不起作用

Question

I'm trying to create following trigger:

CREATE TRIGGER clean
AFTER INSERT ON `mecze_druzyny`
begin
DELETE * FROM bramki;
END;
DELIMITER ;

Which should be ran just after following:

$sql2 = "INSERT INTO mecze_druzyny (id_druzyny, id_meczu, gospodarz) VALUES (
        :team2, 
        :lastmatch, 
        :gospodarz)";

$stmt = $db->prepare($sql2);
$stmt->bindParam(':team2', $id2, PDO::PARAM_INT);       
$stmt->bindParam(':lastmatch', $last_match, PDO::PARAM_INT); 
$stmt->bindParam(':gospodarz', $a=0, PDO::PARAM_STR);
$stmt->execute(); 

Unfortunately I'm getting an error:

1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'begin DELETE * FROM bramki' at line 3

Answer 1

It's an error with your delete syntax.

Get rid of the * so you're left with

DELETE FROM bramki

A typical delete will be in the format

DELETE FROM TableName WHERE ... -- the WHERE clause is optional here

Answer 2

Add Delimiters to make it correct. Here is the correct syntax to do so:

DELIMITER //

CREATE TRIGGER clean
AFTER INSERT
   ON mecze_druzyny FOR EACH ROW

BEGIN

DELETE  FROM bramki;

END; //

DELIMITER ;