Im trying to make a trigger to update my product status. After it gets delivered. So when something is inserted in entrega_viaturas it triggers and updates estado in viatura.
Here are the tables and code for the trigger, please if you see something wrong, do tell.
Tabel entrega_viaturas(id_entrega,data_entrega,funcionario,viatura(fk id_viatura))
Tabel viatura(id_viatura,estado,*other columns*)
CREATE TRIGGER `Update_Status` AFTER INSERT ON `entrega_viaturas`
FOR EACH ROW BEGIN
AS
begin
update viatura
SET estado='Indisponivel'
Where viatura.id_viatura = entrega_viaturas.viatura
end
But it says that entrega_viaturas.viaturas is a unknown column. help
I am assuming that you intend to use new:
CREATE TRIGGER `Update_Status` AFTER INSERT ON `entrega_viaturas`
FOR EACH ROW
AS
begin
update viatura
set estado = 'Indisponivel'
where viatura.id_viatura = new.viatura
end;
Related
I'm trying to set up a trigger which will update same row by inserting some additional data from another table. Field receive.iccid is blank, and I want it to be updated on every insert. However this trigger doesn't work
delimiter //
CREATE TRIGGER ins_iccid
AFTER INSERT ON receive
FOR EACH ROW
BEGIN
UPDATE receive SET NEW.iccid = (SELECT goip.iccid FROM goip WHERE NEW.goipname=goip.name);
END//
delimiter ;
turns out that I need to use 'BEFORE INSERT' to achieve what i was trying to
CREATE TRIGGER `ins_iccid` BEFORE INSERT ON `receive`
FOR EACH ROW
BEGIN
SET NEW.iccid = (SELECT goip.iccid FROM goip WHERE NEW.goipname=goip.name);
END
Using trigger, when I run update query on query browser for one
table, then I would like this to also update another table that contains the same field.
CREATE DEFINER=`root`#`localhost` TRIGGER `abcd`.`library_AFTER_UPDATE`
AFTER UPDATE ON `library` FOR EACH ROW
begin
-- here i want that same query with same value
-- that i have run on the query browser.
end
What code belongs where I have the comment above?
Use the values from the UPDATE query like below
CREATE DEFINER=`root`#`localhost` TRIGGER `abcd`.`library_AFTER_UPDATE`
AFTER UPDATE ON `library` FOR EACH ROW
begin
UPDATE another_table SET same_field = NEW.same_field
WHERE some_filter_condition;
end
I am trying to write a MySQL trigger. I have two tables that look like this:
When a customer makes a purchase a new record is added to each table. I have added column ‘sku_copy’ to Table B, so it does not get populated when a new record is created.
When a new record is created, I want my trigger to copy the ‘sku’ field in Table A to the ‘sku_copy’ field in Table B. However, the problem I am having is how to structure the following condition in the trigger.
IF: ‘order_id’ in Table A matches ‘order_id’ in Table B. THEN: copy ‘sku’ from that Table A record to the record in Table B with the matching ‘order_id’. The data should be added to Table B ‘sku_copy'.
ELSE: don’t do anything.
Can someone show me how to write this into my trigger?
Thanks for any help you can give.
Try this but why do u think of using trigger for this ?
DELIMITER $$
CREATE TRIGGER trigger_name
AFTER INSERT ON tableA
FOR EACH ROW BEGIN
INSERT INTO tableB
SET sku_copy = OLD.sku,
order_id = OLD.order_id,
order = OLD.order;
END$$
DELIMITER ;
I want to post the trigger that was constructed with examples offered here and on another forum. Thanks to everyone who helped with this.
DELIMITER $$
CREATE TRIGGER sku_AfterInsert
AFTER INSERT ON uau3h_virtuemart_order_items
FOR EACH ROW BEGIN
UPDATE uau3h_virtuemart_orders
SET order_item_sku_copy = NEW.order_item_sku
WHERE virtuemart_order_id = NEW.virtuemart_order_id;
END$$;
DELIMITER ;
MySql trigger is very interesting, but very tricky.
I have some problem, I want to run a trigger once after insert on .
I want to run my trigger once after rows inserted, is there anything like for each table``???
how to make this trigger run only once, but not for each row created.
CREATE
DEFINER=`root`#`localhost`
TRIGGER `mydb`.`leave_taken_trigger`
AFTER INSERT ON `mydb`.`leave`
FOR EACH ROW
BEGIN
set #lt:= (SELECT count(*) FROM `leave` where (staff_leave_application_staff_id_staff = new.staff_leave_application_staff_id_staff and leave_type_id_leave_type = new.leave_type_id_leave_type) and active = 1 );
INSERT INTO `leave_taken`(leave_type_id_leave_type, staff_id_staff, taken_days, updated)
VALUES (new.leave_type_id_leave_type, new.staff_leave_application_staff_id_staff, IFNULL(#lt,0), CURDATE())
ON DUPLICATE KEY UPDATE taken_days=IFNULL(#lt,0), updated = CURDATE();
END$$
I think you can't achieve your requirement with trigger.
Your trigger will run in every row created.
I suggest you to using stored procedure from your code after the INSERT has successfully completed.
I wrote a trigger something like this:
CREATE TRIGGER `update_after_itemPresent` AFTER INSERT ON `bus_repair`
FOR EACH ROW begin
IF NEW.unit <> `item_present`.`unit` THEN
update item_present
set unit = unit-new.unit
where item_present.item_group_id = new.item_group_id;
END IF;
end
But when I insert new row in bus_repair table it gives an error that:
unknown table item_present in field list
Any idea how to fix this?
Move your UPDATE item_preset statement above the IF and the IF inside the UPDATE or rephrase as a condition. You need to UPDATE or SELECT the table item_present first.