CODEWITHSUNDEEP
mysqldatabasetriggersinnodb
Alexandr
Alexandr

Reputation: 95

error in your SQL syntax creating MySQL trigger

I try create trigger

CREATE TRIGGER `aster_users2` after
update ON `aster_users` FOR EACH ROW
BEGIN  update event set flag=1 where
id=1; END;

but got next error

ERROR 1064 (42000): 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 'end' at line 6

have suggestion to solve this problem ?

Upvotes: 9

Views: 18408

Answers (3)

Andriy M
Andriy M

Reputation: 77717

You can either:

  • drop BEGIN and END (is only possible when there's a single statement in the body):

    CREATE TRIGGER `aster_users2` after
update ON `aster_users` FOR EACH ROW
update event set flag=1 where id=1;

    or

  • add the DELIMITER specifier for the entire CREATE TRIGGER statement:

    DELIMITER |
CREATE TRIGGER `aster_users2` after
update ON `aster_users` FOR EACH ROW
BEGIN
  update event set flag=1 where id=1;  
END|
DELIMITER ;

    Note the second DELIMITER, which restores the default statement delimiter.

EDIT – Explanation:

Generally you are using ; to delimit statements. But when it comes to compound statements like CREATE TRIGGER, which use BEGIN/END and allow you to include multiple statements in their bodies, the parser needs a way to distinguish the delimiters between the body's statements from the delimiter after the entire compound statement.

Thus you need to either refrain somehow from using ; inside the compound statement or tell the parser that the compound statement will use a different delimiter. The first option can also be achieved if you just drop ; before END, like @p.campbell has suggested.

Upvotes: 10

p.campbell
p.campbell

Reputation: 100607

Try removing the semi-colons from your statements.

If you'd like to keep your semi-colons,

DELIMITER $$
CREATE TRIGGER `aster_users2` after
update ON `aster_users` FOR EACH ROW
BEGIN  update event set flag=1 where
id=1;  
 END$$
DELIMITER ;

Upvotes: 16

Devart
Devart

Reputation: 122032

Delimiters should be used.

DELIMITER $$

CREATE TRIGGER `aster_users2` AFTER
UPDATE ON `aster_users` FOR EACH ROW
BEGIN
  UPDATE event
  SET
    flag = 1
  WHERE
    id = 1;
END$$

DELIMITER ;

Upvotes: 4

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