I have liquibase set up. I currently have 4-5 triggers I would like to load, with each trigger stored in a separate file. All of the triggers are on separate tables. However I keep getting this error:
SEVERE 9/17/13 12:05 PM:liquibase: Change Set migrations/09-16-2013-16-10.sql::129 failed. Error: Error executing SQL DELIMITER $$
DELIMITER $$
CREATE TRIGGER `UPDATE_tableA` BEFORE UPDATE on `tableA`
FOR EACH ROW BEGIN
IF (OLD.ColumnA = NEW.ColumnA) and
((OLD.ColumnB is null and NEW.ColumnB is null) or (OLD.ColumnB = NEW.ColumnB)) and
((OLD.ColumnB is null and NEW.ColumnB is null) or (OLD.ColumnB = NEW.ColumnB)) and
((OLD.ColumnC is null and NEW.ColumnC is null) or (OLD.ColumnC = NEW.ColumnC))
THEN
SET NEW.ColumnA = 0;
SET NEW.ColumnB = NULL;
SET NEW.ColumnB = NULL;
SET NEW.ColumnC = NULL;
END IF;
END$$
DELIMITER ;
DELIMITER $$
CREATE TRIGGER `UPDATE_tableB` BEFORE UPDATE on `tableB`
FOR EACH ROW BEGIN
IF (OLD.ColumnA = NEW.ColumnA) and
((OLD.ColumnB is null and NEW.ColumnB is null) or (OLD.ColumnB = NEW.ColumnB)) and
((OLD.ColumnB is null and NEW.ColumnB is null) or (OLD.ColumnB = NEW.ColumnB)) and
((OLD.ColumnC is null and NEW.ColumnC is null) or (OLD.ColumnC = NEW.ColumnC))
THEN
SET NEW.ColumnA = 0;
SET NEW.ColumnB = NULL;
SET NEW.ColumnB = NULL;
SET NEW.ColumnC = NULL;
END IF;
END$$
DELIMITER ;
'endDelimiter' is a regExp so try this instead
<sqlFile endDelimiter="\$\$" path="..."/>
DELIMITER $$ is a command understood by the MySQL client parser, but not through JDBC that Liquibase uses.
You need to specify the delimiter in how you reference the file, perhaps as <sqlFile endDelimiter="$$" path="..."/>
Related
I am trying to write a trigger where if an incoming value is empty (in other words ''), then insert NULL in the table. I have :
DELIMITER //
CREATE TRIGGER avoid_empty
BEFORE INSERT ON EVALUATION
FOR EACH ROW
BEGIN
IF mark = '' THEN SET NEW.mark = NULL;
END IF;
END;
//
DELIMITER ;
Which executes without errors, but it doesn't do what I need.
Try:
DELIMITER //
CREATE TRIGGER `avoid_empty` BEFORE INSERT ON `EVALUATION`
FOR EACH ROW
BEGIN
IF NEW.`mark` = '' THEN
SET NEW.`mark` := NULL;
END IF;
END//
DELIMITER ;
See db-fiddle.
I am trying to create a mysql trigger. The error code 1064 is very generic. The trigger is to see if a record exists for a particular key; and if it does update a particular column in the newly inserted row with that value. I am using a select query on the same table as the trigger is on. Does that cause a problem? Here is the code:
DELIMITER $$
CREATE TRIGGER classid_insert
AFTER INSERT ON courses_semester
FOR EACH ROW
BEGIN
SET #class_id = (SELECT class_id FROM courses_semester WHERE
course_id = NEW.`course_id`
AND `dept_id` = NEW.`dept_id`
AND `univ_id` = NEW.`univ_id`
AND `section_id` = NEW.`section_id`
AND `semester` = NEW.`semester`
AND `year` = NEW.`year`);
IF(#class_id = NULL)
THEN
NEW.class_id = UUID()
ELSE
NEW.class_id = #class_id
END IF;
END
DELIMITER ;
your entire trigger code should look like below. remove the spaces after DELIMITER $$ and before DELIMITER ;. Also, the last END need to changed to END $$. Also, it has to be an BEFORE trigger and not an AFTER trigger.
Moreover, NEW.class_id = UUID() is not correct.It's missing SET as
SET NEW.class_id = UUID();
CORRECTED TRIGGER CODE:
DELIMITER $$
CREATE TRIGGER classid_insert
BEFORE INSERT ON courses_semester
FOR EACH ROW
BEGIN
SET #class_id = (SELECT class_id FROM courses_semester WHERE
course_id = NEW.`course_id`
AND `dept_id` = NEW.`dept_id`
AND `univ_id` = NEW.`univ_id`
AND `section_id` = NEW.`section_id`
AND `semester` = NEW.`semester`
AND `year` = NEW.`year`);
IF(#class_id = NULL)
THEN
SET NEW.class_id = UUID();
ELSE
SET NEW.class_id = #class_id;
END IF;
END $$
DELIMITER ;
I am trying to create a trigger to prevent empty string insert for cname column and values smaller than 7000 and larger than 8000 for empno column by making it null. Here is how I have done it:
delimiter $$
CREATE TRIGGER test1
BEFORE insert
ON clients
FOR EACH row BEGIN
if new.cname = '' THEN
SET new.cname = null;
if new.empno <7000 THEN
SET new.empno = null;
if new.empno>8000 THEN
SET new.empno = null;
end if;
end if;
end if;
end;
The cname column works fine. But the empno will accept anything and I cannot figure why. My table is something like this:
CREATE TABLE clients
(
empno INTEGER NOT NULL DEFAULT 7654
cname VARCHAR(20) NOT NULL
);
You should set each end if after the corresponding if:
delimiter $$
CREATE TRIGGER test1
BEFORE insert
ON clients
FOR EACH row BEGIN
if new.cname = '' THEN
SET new.cname = null;
end if;
if new.empno <7000 THEN
SET new.empno = null;
end if;
if new.empno>8000 THEN
SET new.empno = null;
end if;
end;
when the table user delete fail,why the next sql will be exceute.who can give me a full example for mysql procedure.i want to delete example.please help?
use test;
delimiter //
create procedure proc_name(in paramter int)
begin
declare t_error int default 0;
declare continue handler for sqlexception set t_error=1;
set autocommit = 0;
START TRANSACTION;
delete from `user` where id = paramter;
delete from `user_info` where uid = paramter;
if t_error=1 then
rollback;
else
commit;
end if;
end;
//
delimiter ;
Dinel, I would change a little bit of your logic to achieve what you are looking for:
use test;
delimiter //
create procedure proc_name(in paramter int)
begin
declare continue handler for sqlexception set t_error=1;
SET #t_error = 0;
START TRANSACTION;
delete from `user` where id = paramter;
SELECT #t_error := COUNT(*) from `user` where id = paramter;
if #t_error != 0 then
ROLLBACK;
else
DELETE FROM `user_info` WHERE uid = paramter;
COMMIT;
end if;
end;
//
delimiter ;
I didn't try the syntax, but it should work. ;-)
I'm trying to write an update trigger that will only update a password when a new password is set in the update statement but I'm having a terrible time trying to nail down the syntax. This should be a no-brainer but I'm just not finding the solution.
Here's my code:
CREATE TRIGGER upd_user BEFORE UPDATE ON `user`
FOR EACH ROW BEGIN
IF (NEW.password <> '') THEN
SET NEW.password = PASSWORD(NEW.password);
END IF;
END;
I've tried:
IF (NEW.password <> NULL) THEN
IF (NEW.password) THEN
IF NEW.password <> NULL THEN
IF (NEW.password > 0) THEN
IF (NEW.password != NULL) THEN
And I'm sure many other combinations but it's just not working. Does anyone have any insight?
I think you mean to update it back to the OLD password, when the NEW one is not supplied.
DROP TRIGGER IF EXISTS upd_user;
DELIMITER $$
CREATE TRIGGER upd_user BEFORE UPDATE ON `user`
FOR EACH ROW BEGIN
IF (NEW.password IS NULL OR NEW.password = '') THEN
SET NEW.password = OLD.password;
ELSE
SET NEW.password = Password(NEW.Password);
END IF;
END$$
DELIMITER ;
However, this means a user can never blank out a password.
If the password field (already encrypted) is being sent back in the update to mySQL, then it will not be null or blank, and MySQL will attempt to redo the Password() function on it. To detect this, use this code instead
DELIMITER $$
CREATE TRIGGER upd_user BEFORE UPDATE ON `user`
FOR EACH ROW BEGIN
IF (NEW.password IS NULL OR NEW.password = '' OR NEW.password = OLD.password) THEN
SET NEW.password = OLD.password;
ELSE
SET NEW.password = Password(NEW.Password);
END IF;
END$$
DELIMITER ;
Try to do...
DELIMITER $$
CREATE TRIGGER aumentarsalario
BEFORE INSERT
ON empregados
FOR EACH ROW
BEGIN
if (NEW.SALARIO < 900) THEN
set NEW.SALARIO = NEW.SALARIO + (NEW.SALARIO * 0.1);
END IF;
END $$
DELIMITER ;