CODEWITHSUNDEEP
phpmysqlsqltriggersphpmyadmin
Kanishka Panamaldeniya
Kanishka Panamaldeniya

Reputation: 17586

TRIGGER CREATED successfully , but no triggers in information_schema TRIGGERS table

hi i am trying to use triggers , my MySQL version is 5.5.8

the thing is when i create the trigger , PHPMyadmin says it is created successfully ,

this is my trigger

DELIMITER $$
CREATE TRIGGER `check_pupil_before_insert` BEFORE INSERT ON `pupil_data`
FOR EACH ROW  BEGIN
  IF  CHAR_LENGTH( NEW.DateOfBirth ) < 4 THEN
       SIGNAL SQLSTATE '12345'
        SET MESSAGE_TEXT := 'check constraint on pupil_data.DateOfBirth  failed';
    END IF;
END$$  
DELIMITER ;

it says

Your SQL query has been executed successfully
DELIMITER $$ CREATE TRIGGER `check_pupil_before_insert` BEFORE INSERT ON  `pupil_data` 
FOR EACH
ROW BEGIN 
IF CHAR_LENGTH( NEW.DateOfBirth ) <4
THEN SIGNAL SQLSTATE '12345'
SET MESSAGE_TEXT :=  'check constraint on pupil_data.DateOfBirth  failed';

END IF ;

but when i 

select * from information_schema.triggers

MySQL returned an empty result set (i.e. zero rows). ( Query took 0.0843 sec )
SELECT * 
FROM information_schema.triggers
LIMIT 0 , 30

why is this happening , please help me , thanks in advance.

Upvotes: 3

Views: 759

Answers (1)

alwaysLearn
alwaysLearn

Reputation: 6950

IMAGE

Check this.. It will help you ... and make sure query is same as is shown in image change ":=" to "="

Upvotes: 2

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