I have a database already in use on a server (MySQL Community Server 5.5.40-cll) & I'm trying to add a trigger to it but I keep getting the below error.
#1064 - 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 '' at line 3
I'm trying to set a trigger to make sure that end_date is not before start_date, here's what I'm currently using.
CREATE TRIGGER `Meets insert` BEFORE INSERT ON `meets`
FOR EACH ROW
IF DATEDIFF(NEW.end_date, NEW.start_date) < 0 THEN
signal sqlstate '45000' set message_text = 'start_date must be before end_date';
END IF;
I've had a look in the MySQL documentation for 5.5 and it seems like everything I'm doing is supported by this version and I'm using it correctly.
I'm sure the if statement is correct as I asked another similar question earlier here on Stack Overflow about a separate problem I was having which worked fine. Although that was on a local development database where as this is on a server.
If anyone can spot what I'm doing wrong or has an idea of what to check it will be appreciated.
Thought I'd point out the server I'm making this change on isn't a production one.
It appears to only be a lack of a DELIMTER wrapper. Try
delimiter $$
CREATE TRIGGER `Meets insert` BEFORE INSERT ON `meets`
FOR EACH ROW
IF DATEDIFF(NEW.end_date, NEW.start_date) < 0 THEN
signal sqlstate '45000' set message_text = 'start_date must be before end_date';
END IF;
$$
delimiter ;
which gets past the Error 1064
See the bottom of This Post for DELIMITER verbiage.
Related
I'm with a problem during creationg of a trigger in my database.
I've a MySQL Second Generation instance with a database (name: test) in my google cloud sql.
Right now i have multiple tables in my database and im trying to create a trigger in one of that tables using:
CREATE TRIGGER date_overlap_insert_start_date
BEFORE INSERT ON driver_operation
FOR EACH ROW
BEGIN
if exists(
select 1
from driver_operation
where nif = NEW.nif
and (NEW.start_date > start_Date and NEW.start_date < end_Date)) then
signal sqlstate '45000' SET MESSAGE_TEXT = 'Overlaps with existing data';
end if;
END;
The error i get is this:
Error Code: 1064. 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 '' at line 10
Is there anyone who can help me on this? This trigger is to prevent overlap in date fields.
With respect to Google Cloud Platform, an important thing to do is to go to your instance configuration, ie "Edit Configuration" then go to "Flags" and ensure that "log_bin_trust_function_creators" is set to on. This will solve issues in GCP making triggers, as well as allow you to create triggers in MySQL Workbench CE 8.0 without it crashing.
I had this exact same issue today. It is simply due the cloud sql instance viewing each semi colon as the end of a statement, so I can only assume it tries to execute each time it encounters one.
Try creating your trigger with:
/*!50003 CREATE*/ /*!50003 TRIGGER date_overlap_insert_start_date
BEFORE INSERT ON driver_operation
FOR EACH ROW
BEGIN
if exists(
select 1
from driver_operation
where nif = NEW.nif
and (NEW.start_date > start_Date and NEW.start_date < end_Date))
then
signal sqlstate '45000' SET MESSAGE_TEXT = 'Overlaps with
existing data';
end if;
END */
edited to fix my syntax. Was missing a semi-colon.
CREATE TRIGGER question_preserver BEFORE UPDATE ON bank
FOR EACH ROW
BEGIN
IF TRIM(NEW.question) != TRIM(OLD.question) THEN
INSERT INTO bank_question_history (id,old_question) VALUES (OLD.id,OLD.question)$$
END IF$$
END$$
I am inserting that query into Mysql using PHPMyAdmin's SQL window, using a delim of $$. I get an error 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 '' at line 5
I'm sure it's something obvious and I'm just missing it, but no matter what I try I can't get it to work. The error is not helpful at all, and from what I have researched I am doing this exactly like 4-5 examples I found.
Any help would be greatly appreciated, thank you!
Go figure I figured it out right after asking.
CREATE TRIGGER question_preserver BEFORE UPDATE ON bank
FOR EACH ROW
BEGIN
IF TRIM(NEW.question) != TRIM(OLD.question) THEN
INSERT INTO bank_question_history (id,old_question) VALUES (OLD.`id`,OLD.`question`);
END IF;
END$$
You have to use ; to break each statement/command and your delim $$ to end the entire trigger.
Using MySQL55 on MySQLWorkbench 6.2 for Windows,
DROP TRIGGER IF EXISTS `maxBBLimit`;
CREATE TRIGGER `maxBBLimit`
AFTER UPDATE ON locationobject
FOR EACH ROW
IF locationobject.boxLowY > 1000 THEN CALL RaiseException();
END IF;
Assuming that locationobject has a unsigned int variable called boxLowY that only allows values between 0 and 1000, and if it is above this range, it calls RaiseException().
My workspace refuses to compile because of these errors:
17:43:40 CREATE TRIGGER `maxBBLimit` AFTER UPDATE ON locationobject FOR EACH ROW IF locationobject.boxLowY > 1000 THEN CALL RaiseException() Error Code: 1064. 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 '' at line 4 0.000 sec
^ This one has a red squiggle under ) after RaiseException(
17:43:40 ; END IF Error Code: 1064. 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 IF' at line 1 0.000 sec
^ This one has a red squiggle under END in the END IF statement;
Anyone have any suggestions how to get this code to compile?
Triggers definitions should be surrounded by delimiter statements.
In addition, you refer to the table for the trigger using new. And, you want a before update trigger. If you fail after the update, the bad value will still go into the database. And, you normally use signal to return an error. So, if I haven't missed anything:
DELIMITER $$
DROP TRIGGER IF EXISTS `maxBBLimit` $$
CREATE TRIGGER `maxBBLimit`
AFTER UPDATE ON locationobject
FOR EACH ROW
IF new.boxLowY > 1000 THEN
SIGNAL SQLSTATE '4500' SET MESSAGE_TEXT = 'boxLowY out of range';
END IF$$
DELIMITER ;
I am creating trigger but it shows me following error :
15:22:44 create trigger trigger3 before update on test.testdata
for each row
begin
if new.qty < 50 then
SIGNAL SQLSTATE VALUE '99999'
SET MESSAGE_TEXT = 'An error occurred';
end if;
end;
Error Code: 1064. 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 'SQLSTATE VALUE '99999'
SET MESSAGE_TEXT = 'An error occurred';
end i' at line 8 0.000 sec
my trigger code is :
delimiter //
create trigger trigger3 before update on test.testdata
for each row
begin
if new.qty < 50 then
SIGNAL SQLSTATE VALUE '99999'
SET MESSAGE_TEXT = 'An error occurred';
end if;
end;
//
delimiter ;
The MySQL 6.0 line was discontinued in 2009 (and never hit a production-level release).
Version 6.0.0-alpha-community-nt-debug, as the name suggests, was a debug build of an alpha release—as such, it really was intended for contributors to the MySQL project to perform early stage testing of the new version. It certainly should not be used in a production system. Where on Earth did you come upon it?
Finding documentation for v6.0 is somewhat difficult, since it was long ago removed from the MySQL website. There is however an archive on Oracle's website, where the documentation for SIGNAL states:
This statement was added in MySQL 6.0.11.
Therefore you will not be able to use SIGNAL with this version of MySQL. If you need to throw an error, you can execute a deliberately erroneous statement, such as calling a non-existent procedure:
CALL error();
However, if it wasn't obvious from what has been said above, you really should upgrade to a stable production-ready ("general release") version of MySQL server—such as v5.6.14 (which, despite the lower version number, is actually a much more recent release).
I have a very simple trigger. I cretaed it from Toad for mysql tool and deployed it and its working perfect without any problem. when I gave it to the admin to deploy in the production server they are getting errors.
Phpmyadmin error:
1064 - 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 '' at line 4
Mysql console 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 1
When asked, they are running the code from phpmyadmin and also they tried to run from mysql console they are getting errors
Its really frustrating and irritating why the same thing is running from a GUI tool and not working from a webtool or a console. 3 different behaviors in from three different tools
Then I tried the same thing and I got the error too. Its suprising me why
DROP TRIGGER IF EXISTS TRG_ ;
CREATE TRIGGER TRG_ BEFORE INSERT ON users FOR EACH ROW
BEGIN
DECLARE X INTEGER;
SELECT COUNT(*) into X FROM users;
IF X >= 16 THEN -- CHANGE THIS NUMBER
SIGNAL SQLSTATE '45000'
SET MESSAGE_TEXT = 'cant create more users';
END IF;
END;
Can some one tell me what I am doing wrong? I am not sure but I guess its something to do with delimiter keyword which I never understood the purpose.
Have a look at this question - MySQL: How do I use delimiters in triggers?
You should use delimiters when create source objects like triggers. The DELIMITER is not a MySQL statement, it a console command, and many MySQL clients supports this command. You may try this code in the MySQL console -
DROP TRIGGER IF EXISTS TRG_ ;
DELIMITER $$
CREATE TRIGGER TRG_ BEFORE INSERT ON users FOR EACH ROW
BEGIN
DECLARE X INTEGER;
SELECT COUNT(*) INTO X FROM users;
IF X >= 16 THEN -- CHANGE THIS NUMBER
SIGNAL SQLSTATE '45000'
SET MESSAGE_TEXT = 'cant create more users';
END IF;
END$$
DELIMITER ;
As I know some old phpmyadmin versions do not support delimiters.