Somewhere around here should be a syntax error, but I really can't find one:
DELIMITER |
CREATE TRIGGER Mieter_bi BEFORE INSERT ON Mieter FOR EACH ROW
BEGIN
IF NEW.vorname = '' AND NEW.nachname = '' AND NEW.email = '' AND NEW.mieterID > 0
THEN DELETE NEW;
END IF;
END|
Error message:
#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; END|' at line 4
Thanks for helping ;)
This is how you would cancel an insert
DELIMITER |
CREATE TRIGGER Mieter_bi BEFORE INSERT ON Mieter FOR EACH ROW
BEGIN
IF NEW.vorname = '' AND NEW.nachname = '' AND NEW.email = '' AND NEW.mieterID > 0
THEN
SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'Any Message';
END IF;
END|
Related
I'm attempting to create a trigger to abort writing a new record for a library database if the book in question has already been loaned out. Here's what I have so far:
CREATE TRIGGER OnlyOneBorrowerAtATime
BEFORE INSERT ON Transaction
FOR EACH ROW
BEGIN
IF (EXISTS ( SELECT * FROM Transaction
WHERE NEW.bookId = Transaction.bookId AND Transaction.transType = 'Loaned'))
THEN
SIGNAL SQLSTATE '45000'
SET MESSAGE_TEXT = 'Book has not been returned';
END IF;
END;
I get the following error back from MariaDB:
SQL Error (1064): You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 9
MariaDB version is 10.5.9.
Add a DELIMITER to your query like
DELIMITER $$
CREATE TRIGGER OnlyOneBorrowerAtATime
BEFORE INSERT ON Transaction
FOR EACH ROW
BEGIN
IF (EXISTS ( SELECT * FROM Transaction
WHERE NEW.bookId = Transaction.bookId AND Transaction.transType = 'Loaned'))
THEN
SIGNAL SQLSTATE '45000'
SET MESSAGE_TEXT = 'Book has not been returned';
END IF;
END$$
DELIMITER ;
I'm trying to create a SQL Trigger, but i receive always an error message, i want to check on update and insert operation if value called status is not higher than 1 and not lower than 0.
CREATE TRIGGER tr_ins_cert_login
BEFORE UPDATE ON cert_login
FOR EACH ROW
BEGIN
DECLARE errorMessage VARCHAR(255);
SET errorMessage('Invalid Status Value.');
IF new.status <> 0 AND new.status <> 1 THEN
SET MESSAGE_TEXT = errorMessage;
END IF;
END
When i try to run the commands it returns error.
I'm using MySql.
The 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 5
Any hint?
Message_text should be part of signal sqlstate following syntaxes on my box
drop trigger if exists t;
delimiter $$
CREATE TRIGGER t
BEFORE UPDATE ON cert_login
FOR EACH ROW
BEGIN
DECLARE errorMessage VARCHAR(255);
SET errorMessage = ('Invalid Status Value.');
IF new.status <> 0 AND new.status <> 1 THEN
SIGNAL SQLSTATE '01000'
SET MESSAGE_TEXT = errorMessage;
END IF;
END $$
delimiter ;
and https://www.db-fiddle.com/f/913nweKrHqXL5SViuuqAZE/0
ps your first set statement is invalid you missed the =
With the following sql code:
CREATE TRIGGER yirmi_test BEFORE UPDATE ON `orders`
FOR EACH ROW
IF ((OLD.`product_price_currency` != "") AND (NEW.`product_price_currency` = "")) THEN
signal sqlstate '45000' set message_text = 'Erasing currency';
END IF;
I get the following 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
I think you are fine. Just wrap with the following begin and end delimiter block. It passed a 1064 test for me:
DELIMITER $$
CREATE TRIGGER yirmi_test BEFORE UPDATE ON `orders`
FOR EACH ROW
IF ((OLD.`product_price_currency` != "") AND (NEW.`product_price_currency` = "")) THEN
signal sqlstate '45000' set message_text = 'Erasing currency';
END IF;
$$
DELIMITER ;
Read the bottom of This concerning delimiters. It is trivial, but it can waste hours.
I have this code below that should throw an exception if amount is negative :
create procedure depositMoney(
IN acc integer,
IN amoun integer
)
BEGIN
DECLARE negative CONDITION FOR SQLSTATE '45000';
IF amoun < 0 THEN SIGNAL negative;
END IF;
INSERT INTO account(balance) VALUES amoun where account.number = acc;
END;
but when i execute i have an #1064 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 6
Could you help me ?
Check the syntax of the INSERT.
Try:
DELIMITER //
DROP PROCEDURE IF EXISTS `depositMoney`//
CREATE PROCEDURE `depositMoney` (
IN `acc` INTEGER,
IN `amoun` INTEGER
)
BEGIN
DECLARE `negative` CONDITION FOR SQLSTATE '45000';
IF `amoun` < 0 THEN
SIGNAL `negative`
SET MESSAGE_TEXT = 'An error occurred';
END IF;
/*
Check the syntax of the INSERT.
INSERT INTO account(balance) VALUES amoun where account.number = acc;
*/
END//
DELIMITER ;
MySQL 5.5 or higher.
Test:
mysql> CALL `depositMoney`(NULL, -1);
ERROR 1644 (45000): An error occurred
I am trying this trigger but it keeps giving me this error:
Trigger
DELIMITER $$
CREATE
TRIGGER entries_limit_trigger
BEFORE INSERT ON Feed
FOR EACH ROW
BEGIN
Set #counts=(SELECT count(*) from Feed);
IF (#counts > 10000)
THEN
PRINT 'INSERTED SUCCESS';
END IF;
END
$$
DELIMITER ;
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 ''INSERTED SUCCESS'; END IF; END' at line 9
If you want the trigger to exit with a message you can do:
CREATE
TRIGGER entries_limit_trigger
BEFORE INSERT ON Feed
FOR EACH ROW
BEGIN
Set #counts=(SELECT count(*) from Feed);
IF #counts > 10000 THEN
set #msg = "Reached the limit";
SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = #msg;
END IF;
END;
sqlfiddle demo
To make it exit with a message, just add another insert to the fiddle.