My trigger will not work.
Basically when a user_briefcase is created i want to also create a row in user_complementary_info if it not already exist, where user_complementay.user_id = the newly created user_briefcase.user_id
My trigger
DROP TRIGGER IF EXISTS complementary_user_info
DELIMITER $$
CREATE TRIGGER complementary_user_info AFTER INSERT user_briefcases FOR EACH ROW
BEGIN
IF (SELECT COUNT(*) user_complementary WHERE user_id=NEW.user_briefcases.user_id) = 0 THEN
INSERT INTO user_complementary (user_id)
VALUES (NEW.user_briefcases.user_id)
END $$
DELIMITER ;
DROP TRIGGER IF EXISTS complementary_user_info;
DELIMITER $$
CREATE TRIGGER complementary_user_info AFTER INSERT user_briefcases FOR EACH ROW
BEGIN
IF NOT EXISTS (SELECT 1 FROM user_complementary_info WHERE user_id = NEW.user_id) THEN
INSERT INTO user_complementary (user_id)
VALUES (NEW.user_briefcases.user_id);
END IF;
END $$
DELIMITER ;
Related
Trying to create a Delete Trigger. If the sku is found in sold table need to delete it in not sold table
delimiter $$
drop trigger delete_sold_trigger $$
create trigger delete_sold_trigger after insert on soldtable
for each row
begin
IF soldtable.sku EXIST IN notsoldtable THEN
DELETE from notsoldtable WHERE notsoldtable.sku=soldtable.sku;
END IF;
end$$
delimiter ;
CREATE TRIGGER delete_from_notsoldtable_trigger
AFTER INSERT ON soldtable
FOR EACH ROW
DELETE FROM notsoldtable
WHERE notsoldtable.sku=NEW.sku;
I have two tables as described below. I made a trigger which must be executed on the sgr_customer_group table after a new insert into sgr_customer table:
After a new insert into sgr_customer, a new record with id_customer (Primary key of sgr_customer) and the constant 4 must be inserted into sgr_customer_group table.
DELIMITER $$
CREATE TRIGGER sgr_customer_trig
AFTER INSERT ON `sgr_customer` FOR EACH ROW
begin
DECLARE id_exists Boolean;
SELECT 1
INTO #id_exists
FROM sgr_customer
WHERE sgr_customer.id_customer= NEW.id_customer;
IF #id_exists = 1
THEN
Insert into sgr_customer_group (id_customer, id_group)VALUES(id_customer,4);
END IF;
END
$$
DELIMITER ;
Table definitions:
sgr_customer_group(id_group,id_customer#,id_group );
id_group:Primary Key
sgr_customer(id_customer,......);
id_customer:Primary key
Great Thanks.
Everything #Uueerdo wrote in their comment to your question is correct, so the trigger can be simplified to:
DELIMITER $$
CREATE TRIGGER sgr_customer_trig
AFTER INSERT ON `sgr_customer` FOR EACH ROW
BEGIN
INSERT INTO sgr_customer_group (id_customer, id_group) VALUES(NEW.id_customer, 4);
END
$$
DELIMITER ;
I want to create a trigger in mysql which insert a row in a table change_history when there is any update in another table event_data if event_data.title='event_media'.
DELIMITER $$
CREATE TRIGGER `after_evdata_update`
AFTER UPDATE ON event_data
FOR EACH ROW
BEGIN
if OLD.title <=> 'event_media'
INSERT INTO change_history (badge,city,country,venue,company,
date,rehosted,type,cancelled,name,tagline,description,agenda,pricing,
edition,photo_video,exhibitors,speakers,official_url,twitter_handle,
twitter_hashtag,facebook_url,contact,post_review_id) values(1,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,null);
end if;
END $$
DELIMITER ;
I think this should work. Please try.
BEGIN
IF (OLD.title <> 'event_media')
THEN
INSERT INTO `change_history` (`xxx_id`,`and_all_other_fields_similar_way`)
VALUES (old.xxx_id,old.and_all_other_fields_similar_way);
END IF;
END
I have table "book" and "store_order" have relation
I want to make trigger(but it contain error):
DELIMITER $$
CREATE TRIGGER t1
before delete ON store_order
FOR EACH ROW
BEGIN
update book set number = number + NEW.quantity where ISBN = NEW.ISBN;
END
$$
DELIMITER ;
DELIMITER $$
CREATE
TRIGGER t2 AFTER delete
ON library.store_order
FOR EACH ROW BEGIN
update library.book
set library.book.number = (library.book.number + OLD.quantity)
where library.book.ISBN = OLD.ISBN;
END$$
DELIMITER ;
Use OLD instead of NEW when you want to get the deleted object.
for an example of my case. I'm getting the id of the newly added role by calling
NEW.id
and getting the same field's value while deleting by calling
OLD.id
Example:
DELIMITER $$
CREATE TRIGGER after_insert_role
AFTER INSERT ON role FOR EACH ROW
BEGIN
INSERT INTO `sync_mapping`
(`operation_type`, `table_name`, `oid`, `end_point`)
VALUES
('insert', 'role', NEW.id, 'new/role');
END $$
DELIMITER $$
CREATE TRIGGER after_delete_role
AFTER DELETE ON role FOR EACH ROW
BEGIN
INSERT INTO `sync_mapping` (`operation_type`, `table_name`, `oid`, `end_point`) VALUES
('delete', 'role', OLD.id, 'delete/role');
END $$
Whenever we are deleting the data
USE
OLD. instead of NEW.
CREATE TRIGGER user_history_delete AFTER DELETE ON user FOR EACH ROW
INSERT INTO user_history(action , name )
VALUES ("Delete" , OLD.name );
I want a trigger that deletes the row in user_briefcases after a row is inserted in user_briefcases_sold
both tables have briefcase_id and user_id
I have no idea why this wont work:
CREATE TRIGGER delete_user_briefcase_when_sold
DELIMITER $$
AFTER INSERT ON user_briefcases_sold FOR EACH ROW BEGIN
DELETE FROM user_briefcases WHERE briefcase_id = NEW.briefcase_id && user_id = NEW.user_id;
END;
$$ DELIMITER ;
You have syntax error
try this
DELIMITER $$
CREATE
TRIGGER delete_user_briefcase_when_sold AFTER INSERT
ON user_briefcases_sold
FOR EACH ROW BEGIN
DELETE FROM user_briefcases WHERE briefcase_id = NEW.briefcase_id AND user_id = NEW.user_id;
END$$
DELIMITER ;