I have to check specific keyword's weight and force those which have weight > 3 to 3. It's my very first time I work with triggers, this is my code but it doesn't work, why?
CREATE DEFINER = CURRENT_USER TRIGGER `elections`.`keyword_AFTER_INSERT`
AFTER INSERT ON `keyword`
FOR EACH ROW
BEGIN
if(weight > 3) then begin
set weight = 3;
end;
end if;
END
Try this, where the delimiter has been put. Several changes has been made and I'm not sure what you mean with 'elections':
DELIMITER ;;
CREATE DEFINER = CURRENT_USER TRIGGER `keyword_AFTER_INSERT`
BEFORE INSERT ON `keyword`
FOR EACH ROW
BEGIN
IF NEW.weight > 3 then
set NEW.weight = 3;
END IF;
END;
Related
I have a database where whenever residential address update in user table I want it to store in history table of user. For that I'm trying to write triggers but failing miserably in phpmyadmin. Also it's not giving me proper reason why so I can correct it. This is what I have done so far.
DROP TRIGGER IF EXISTS `record_history`;
CREATE TRIGGER `record_history` AFTER UPDATE ON `s_user`
FOR EACH ROW
BEGIN
DECLARE date_current datetime;
DECLARE residential_address varchar(1000);
SET #date_current = NOW();
SET #residential_address = NEW.residential_address;
IF (#residential_address <> OLD.residential_address AND #residential_address != "" AND #residential_address IS NOT NULL) THEN
INSERT INTO history_residential_address (`s_u_id`, `residential_address`, `status`, `date_added`, `date_updated`) VALUES
(OLD.s_u_id, #residential_address, 1, #date_current, #date_current);
END IF;
END;
delimiter ;
A cleaner version of your code
DROP TRIGGER IF EXISTS `record_history`;
delimiter $$
CREATE TRIGGER `record_history` AFTER UPDATE ON `s_user`
FOR EACH ROW
BEGIN
IF (new.residential_address <> OLD.residential_address AND new.residential_address <> "" AND new.residential_address IS NOT NULL) THEN
INSERT INTO history_residential_address (`s_u_id`, `residential_address`, `status`, `date_added`, `date_updated`) VALUES
(OLD.s_u_id, new.residential_address, 1, now(), now());
END IF;
END $$
delimiter ;
If you are still having problems please add sample data from s_user as text to the question.
I'm trying to change a value conditionally on my trigger, but I've got an error.
My trigger is:
CREATE TRIGGER `defineBase` BEFORE INSERT ON `perguntas`
FOR EACH ROW
BEGIN
IF NEW.per_base = 0 THEN
SET NEW.per_base = (SELECT per_id FROM perguntas ORDER BY per_id DESC LIMIT 1) + 1;
END IF;
END;
but doesn't work.
You need to change the delimiter to something else than ;. Otherwise the trigger definition stops at the first ;
delimiter |
CREATE TRIGGER `defineBase` BEFORE INSERT ON `perguntas`
FOR EACH ROW
BEGIN
IF NEW.per_base = 0 THEN
SET NEW.per_base = (SELECT per_id FROM perguntas ORDER BY per_id DESC LIMIT 1) + 1;
END IF;
END
|
delimiter ;
I also have the same problem. My SQL code before is just like this (without delimiter):
CREATE TRIGGER update_created_time BEFORE INSERT
ON contact FOR EACH ROW
BEGIN
SET NEW.created=NOW();
END
Then, after i add the following DELIMITER // and close it with the same //
DELIMITER //
CREATE TRIGGER update_created_time BEFORE INSERT
ON contact FOR EACH ROW
BEGIN
SET NEW.created=NOW();
END //
It works. I hope it can help someone in the future...
I'm trying to make a datetime field that automatically gets updated with the current time only if there was a change to a certain field.
It seems I have a syntax error.
CREATE OR ALTER TRIGGER last_progress_date
ON wp_task_mgr
AFTER UPDATE
AS BEGIN
IF UPDATE (progress_percentage)
SET last_progress_date = GETDATE()
END
Just for future reference, I found the answer here:
https://dba.stackexchange.com/questions/125203/simple-trigger-to-update-two-columns-in-one-table
MySQL query:
DELIMITER //
CREATE TRIGGER trig_1 before insert
ON <table_name> FOR EACH ROW
BEGIN
IF new.due_date is not null and new.end_date='' then
set new.end_date=new.due_date;
end if;
IF new.end_date is not null and new.due_date='' then
set new.due_date=new.end_date;
end if;
END;
//
DELIMITER //
CREATE TRIGGER trig_2 before update
ON <table_name> FOR EACH ROW
BEGIN
IF new.due_date <>old.due_date then
set new.end_date=new.due_date;
end if;
IF new.end_date <> old.end_date then
set new.due_date=new.end_date;
end if;
END;
//
This is the trigger im trying to add. I keep getting "Updating of NEW row is not allowed in after trigger"
DELIMITER $$
DROP TRIGGER IF EXISTS leaderboard.badges_AUPD$$
USE leaderboard$$
CREATE TRIGGER `badges_AUPD` AFTER UPDATE ON `badges` FOR EACH ROW
set new.badgelevel := case when badgepercent < 50 then 0
when badgepercent < 75 then 1
else 2 end;
$$
DELIMITER ;
Your trigger should be before update since after update you cant set any column of the same table, and also missing the begin part
DELIMITER $$
DROP TRIGGER IF EXISTS leaderboard.badges_AUPD$$
USE leaderboard$$
CREATE TRIGGER `badges_AUPD` BEFORE UPDATE ON `badges`
FOR EACH ROW
BEGIN
if new.badgepercent < 50 then
set new.badgelevel = 0 ;
elseif new.badgepercent < 75 then
set new.badgelevel = 1 ;
else
set new.badgelevel = 2;
end if;
end;$$
delimiter ;
I have created a trigger , and this trigger updating the field value , but not checking the if condition ,
DELIMITER $$
create trigger `njsystem`.`test` BEFORE UPDATE on `njsystem`.`tbl_users`
for each row
BEGIN
IF (NEW.user_failed_logins > 3) THEN
UPDATE tbl_users SET user_active = 0;
END IF;
END; $$
DELIMITER ;
What I understand from your problem statement is that, you wanted to set user_active to 0 if user_failed_logins count goes above 3. Here is solution for that, you can also change values using new.
DELIMITER $$
create trigger `test` BEFORE UPDATE on `tbl_users`
for each row
BEGIN
IF (NEW.user_failed_logins > 3) THEN
SET NEW.user_active = 0;
END IF;
END; $$
DELIMITER ;