This is a trigger i write.
DELIMITER //
create trigger after_insert_bid
after insert on Bid
for each row
when exists(
select *
from Item
where ItemID = new.ItemID)
begin
update Item set Item.currently = NEW.amount where Item.itemID = NEW.itemID;
end;//
DELIMITER ;
It has an 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 'when exists(
SELECT *
FROM Item
WHERE ItemID = new.ItemID
)
begin
UPDATE Item SE' at line 4
mysql> end;
I am new to mysql, and i know it's an simple question, but i really don't know how to find the error, thank you!
mysql version is 5.1.73
You don't need to check whether the itemid exists in item table just update the item table directly. The table will not be updated if ItemID do not exists in Item table.
for each row
begin
update Item set Item.currently = NEW.amount where Item.itemID = NEW.itemID;
end
Related
I just want to create trigger in my sql but some error happened
this is the code
CREATE TRIGGER delete_santri_in_kamar
AFTER UPDATE ON
santri
FOR EACH ROW
BEGIN
DECLARE stat INT
SET stat = select status FROM santri WHERE id_santri=new.id_santri
IF (stat = 0) THEN
DELETE FROM santri_kamar_asrama WHERE id_santri=new.id_santri
END IF
END
and this is the error message
#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 'SET stat = select status FROM santri WHERE id_santri=new.id_santri
IF (stat =' at line 7
please help me
Add semicolons after the statements and change default delimiter(;) before the code of create trigger. Otherwise it will give
SQL Error(1064): You have an error in your SQL Syntax;
After the create trigger code make ; as default delimiter
DELIMITER $$
CREATE TRIGGER delete_santri_in_kamar
AFTER UPDATE ON
santri
FOR EACH ROW
BEGIN
DECLARE stat INT;
SET stat = (select status FROM santri WHERE id_santri=new.id_santri);
IF (stat = 0) THEN
DELETE FROM santri_kamar_asrama WHERE id_santri=new.id_santri;
END IF;
END
$$
DELIMITER ;
Any ideas what's wrong with this query? I searched around stackoverflow and it seems everyone is using this and it works.
mysql> CREATE TRIGGER upd_entry
-> AFTER UPDATE ON entry FOR EACH ROW
-> BEGIN
-> UPDATE entry
-> SET count = count +1
-> WHERE id = NEW.id
-> END;
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 7
Run this first to change the delimiter
DELIMITER //
create the trigger
CREATE TRIGGER upd_entry
AFTER UPDATE ON entry FOR EACH ROW
BEGIN
UPDATE entry
SET count = count +1
WHERE id = NEW.id;
END//
After change it back
DELIMITER ;
forget ; at end of line
CREATE TRIGGER upd_entry
AFTER UPDATE ON entry FOR EACH ROW
BEGIN
UPDATE entry SET count = count +1 WHERE id = NEW.id;//forget to close line ;
END;//
delimiter;
Mysql Trigger
I am attempting to increment count in my grade_distribution table whenever a new row is inserted into my Grades table. When the grade inserted into Grades is the same as the grade in grade_distribution, the count should be incremented.
But i am getting an error:
ERROR 1064 (42000) at line 1: 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
create trigger tr_grades_insert after insert on Grades
for each row
begin
update grade_distribution
set grade_distribution.count = grade_distribution.count+1
where Grades.Grade = grade_distribution.grade;
end
I needed a delimiter to end the trigger. Also to use update students.grade_distribution
DELIMITER //
create trigger tr_grades_insert after insert on Grades
for each row
begin
update students.grade_distribution
set count=count+1
where grade = NEW.Grade;
end//
DELIMITER ;
Can someone tell me what this sql does not work? Where is the syntax error?
SET NEW.`modified` = CURTIME() WHERE `id` = NEW.id;
Error:
One or more errors have occured while processing your request:
The following query has failed:
CREATE DEFINER=`root`#`localhost` TRIGGER `event_name`
BEFORE UPDATE ON `clients`
FOR EACH ROW
SET NEW.`modified` = CURTIME() WHERE `id` = NEW.id;
MySQL said: #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 'WHERE id = NEW.id' at line 1
Image shows the error
http://s23.postimg.org/rhsf2x1tn/screenshot.png
You don't need the where condition to specify the row being changed.
For every row being updated, you set the specific column value. See the example below as well as the quoted reference.
Quoting/Referencing from here:
DELIMITER |
CREATE TRIGGER event_name BEFORE UPDATE ON clients
FOR EACH ROW
BEGIN
SET NEW.date_modify = NOW();
END;
|
DELIMITER ;
Running on MySQL 5.5.9 with InnoDB.
I created the following trigger:
CREATE TRIGGER TRIGGER_Products_Insert
AFTER INSERT ON Products
FOR EACH ROW
BEGIN
UPDATE Products
SET current = 0
WHERE id = new.id
AND current = 1
AND autonumber <> new.autonumber
END;
MySQLWorkbench shows a syntax error on the last line, and executing this throws the following error
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' at line 11
Where is my error?
http://dev.mysql.com/doc/refman/5.5/en/create-trigger.html
DELIMITER |
CREATE TRIGGER TRIGGER_Products_Insert AFTER INSERT ON Products
FOR EACH ROW BEGIN
UPDATE Products
SET current = 0
WHERE id = new.id
AND current = 1
AND autonumber <> new.autonumber;
END;
|
DELIMITER ;
You are missing a ; before your END keyword:
CREATE TRIGGER TRIGGER_Products_Insert
AFTER INSERT ON Products
FOR EACH ROW
BEGIN
UPDATE Products
SET current = 0
WHERE id = new.id
AND current = 1
AND autonumber <> new.autonumber;
END;