I have the code bellow:
DROP TRIGGER IF EXISTS before_insert_test;
DELIMITER $$
CREATE TRIGGER DB1.before_insert_test
BEFORE INSERT ON DB1.t1 FOR EACH ROW
BEGIN
-- condition to check
IF (select length(NEW.m_phone) > 10) THEN
set new.m_phone = '1111111111';
END IF;
END$$
in the IF statement the comarison works with an "=" but not with either "<>", "!=" or ">".
Has anyone seen this before and can point me in the right direction?
Related
I am trying to set up a TRIGGER to clear empty strings before INSERT. Not rocket science but I can't find the error in my syntax!
Here is the TRIGGER itself
USE `ga_abtest_logging`;
DELIMITER $$
CREATE TRIGGER avoid_empty
BEFORE INSERT ON daily_analytics
FOR EACH ROW
BEGIN
IF profileID = ''
THEN SET profileID = NULL
END IF;
END$$
Here is what workbench is showing:
On hover over the END IF it reads syntax error, unexpected END, expecting ';'
Could I have a problem with the settings on my DB? I have gone through the MySQL docs and I think the trigger looks right! Does anyone see anything obviously wrong?
You should make a few changes:
Use the NEW. prefix when referencing a column value
Add a semi-colon at the end of the line where you set the value
For example:
DELIMITER $$
CREATE TRIGGER tr_b_ins_daily_analytics BEFORE INSERT ON daily_analytics FOR EACH ROW BEGIN
IF (NEW.profileID = '')
THEN
SET NEW.profileID = NULL;
END IF;
END $$
DELIMITER ;
The code below should work.
DELIMITER $$
CREATE TRIGGER avoid_empty
BEFORE INSERT ON daily_analytics
FOR EACH ROW
BEGIN
IF NEW.profileID = ''
THEN SET NEW.profileID = NULL;
END IF;
END;$$
DELIMITER ;
i have written a trigger in mysqlworkbench that should update the product stock after a new line had been added to the order table(my code is in dutch so thats why im explaining this) But it doesn't work, when i try to apply it mysqlworkbench says its sql code contains errors.
Here's the trigger:
CREATE DEFINER = CURRENT_USER TRIGGER `winkel`.`bestelregel_AFTER_INSERT` AFTER INSERT ON `bestelregel` FOR EACH ROW
BEGIN
if Product.productnr = NEW.productnr
then
Update Product
Set Hoeveelheid = (Hoeveelheid - NEW.aantal)
Where productnr = NEW.productnr;
end if;
END
What is Product in the if statement? That is, no doubt, generating a syntax error, because it is unrecognized.
I think you intend for the body to be simply:
Update Product p.
Set Hoeveelheid = (Hoeveelheid - NEW.aantal)
Where p.productnr = NEW.productnr;
The if irrelevant.
I would expect the full version to look something like:
DELIMITER $$
CREATE DEFINER = CURRENT_USER TRIGGER `winkel`.`bestelregel_AFTER_INSERT`
AFTER INSERT ON `bestelregel` FOR EACH ROW
BEGIN
UPDATE Product p
SET Hoeveelheid = (Hoeveelheid - NEW.aantal)
WHERE p.productnr = NEW.productnr;
END $$
DELIMITER ;
You have delimiter trouble. You need
DELIMITER $$
CREATE ..... TRIGGER ...
BEGIN
END$$
DELIMITER ;
I am trying to run a query which I first typed out like this:
DELIMITER $$
DROP PROCEDURE IF EXISTS development $$
CREATE PROCEDURE development()
BEGIN
DECLARE i INT DEFAULT 1;
WHILE i <= 500 DO
IF NOT EXISTS ((SELECT * FROM customers WHERE customerID = 500)) THEN INSERT INTO customers (firstName) VALUES (''); END IF;
SET i = i + 1;
END WHILE;
END $$
CALL development() $$
DROP PROCEDURE IF EXISTS development $$
DELIMITER ;
but then "compressed" into this:
DELIMITER $$ DROP PROCEDURE IF EXISTS development $$ CREATE PROCEDURE development() BEGIN DECLARE i INT DEFAULT 1; WHILE i <= 500 DO IF NOT EXISTS ((SELECT * FROM customers WHERE customerID = 500)) THEN INSERT INTO customers (firstName) VALUES (''); END IF; SET i = i + 1; END WHILE; END $$ CALL development() $$ DROP PROCEDURE IF EXISTS development $$ DELIMITER ;
on one line. The problem is that the first (multiline) code works, and does what it's supposed to do, while the other (single line) version, doesn't. It doesn't fail or throw errors, it just doesn't insert the rows like the multiline version. Why is this? More importantly, how can I make the single line version work?
Thanks in advance!
please try it this way:
DELIMITER $$
DROP PROCEDURE IF EXISTS development $$ CREATE PROCEDURE development() BEGIN DECLARE i INT DEFAULT 1; WHILE i <= 500 DO IF NOT EXISTS ((SELECT * FROM customers WHERE customerID = 500)) THEN INSERT INTO customers (firstName) VALUES (''); END IF; SET i = i + 1; END WHILE; END $$ CALL development() $$ DROP PROCEDURE IF EXISTS development $$
DELIMITER ;
The last line break might not be neccessary.
But I am fairly confident that, when inlining the whole code you end up setting a delimiter much longe than "$$"
I just executed the completely inlined example on a random sql server of mine and always received a positive result, even though I have not set up the related db structure.
with line breaks there are complaints about missing tables (as would be expected)
Regards
Stefan
You cannot run any SQL on the same line as delimiter. delimiter is a built in mysql client command that sets the statement seperator, not an sql interpreter. It takes one argument, read up to the first space or newline. Everything else is ignored.
delimiter $$ select now() $$
No output, because everything after $$ is thrown away.
Or illustrated by bad syntax
delimiter "$$" select; nothing order by from nowhere group , oh forget it $$
I am first time using trigger concept in my MYSQL workbench like below query,
First I created people table by using below query,
CREATE TABLE people (age INT, name varchar(150));
Then I used below query for trigger
DELIMITER
CREATE TRIGGER agecheck BEFORE INSERT ON raptor1_5.people FOR EACH ROW IF NEW.age < 0 THEN SET NEW.age = 0; END IF;
DELIMITER ;
But agecheck trigger not creating to people table. Its does not show any error message when I run this query.
Here is my table images,
Updated : based on the answer
Try with this.
USE `raptor1_5`;
DELIMITER $$
DROP TRIGGER IF EXISTS raptor1_5.agecheck$$
USE `raptor1_5`$$
CREATE TRIGGER agecheck BEFORE INSERT ON people
FOR EACH ROW
BEGIN
IF NEW.age < 0 THEN
SET NEW.age = 0;
END IF;
END$$
DELIMITER ;
The standard trigger syntax should be as
DELIMITER //
CREATE TRIGGER agecheck BEFORE INSERT ON raptor1_5.people
FOR EACH ROW
BEGIN
IF NEW.age < 0 THEN
SET NEW.age = 0;
END IF;
END;//
DELIMITER ;
The above is when you run on mysql cli, however in phpmyadmin or workbench check if you have an option to set the delimiter if yes choose that and remove the delimiter part from the above.
I hav a table with several fields. One field is "date_assigned" and the other is "assigned". "date_assigned" has a datatype of timestamp and can be null. "assigned" has a datatype of tinyint and the values are either 0 (default; 'not assigned') or 1 ('assigned').
I would like to create a trigger that would automatically update the "assigned" value to 1 when "date_assigned" is updated with a value (is not null).
I've used triggers before, but have not used them in conjunction with checking if a value is null. I'm unclear on the syntax, so any help would be appreciated. So far, I've tried:
DELIMITER $$
CREATE
TRIGGER `<database>`.`<trigger_name>` AFTER UPDATE
ON `<database>`.`<table>`
FOR EACH ROW BEGIN
IF(NEW.date_assigned IS NOT NULL) THEN
UPDATE <table> SET assigned = '1';
END$$
DELIMITER ;
I just get Error Code: 1064. I looked upo the code, and it appears that it's a syntax error. So what syntax mistake am I making, and is this even the correct 'grammar'?
Try putting BEGIN in a new line as follows.
DELIMITER $$
CREATE
TRIGGER `<database>`.`<trigger_name>` AFTER UPDATE
ON `<database>`.`<table>`
FOR EACH ROW
BEGIN
IF(NEW.date_assigned IS NOT NULL) THEN
UPDATE <table> SET assigned = '1';
END; //Change here also.
$$
DELIMITER ;
This is because of default delimiter in MySQL set to ;. So, the first line should look like DELIMITER $$;
DELIMITER $$;
CREATE TRIGGER `<database>`.`<trigger_name>`
AFTER UPDATE ON `<database>`.`<table>`
FOR EACH ROW BEGIN
IF(NEW.date_assigned IS NOT NULL) THEN
UPDATE <table> SET assigned = '1';
END$$
DELIMITER ;