Upon creating a trigger i get the following 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 3
This is my query:
CREATE TRIGGER reserved BEFORE INSERT ON Reserv
FOR EACH ROW BEGIN
DECLARE trip_id integer;
DECLARE free integer;
DECLARE count integer;
set #free := (select place_free from Trips where id = trip_id);
set #count := (select count from inserted);
if #count <= #free
begin
update Trips set place_free = #free - #count where id = #trip_id;
end
ELSE
BEGIN
ROLLBACK;
return;
END
END
What I see is that you are using the RETURN statement. As https://dev.mysql.com/doc/refman/5.7/en/stored-program-restrictions.html#stored-routines-trigger-restrictions states:
The RETURN statement is not permitted in triggers, which cannot return
a value. To exit a trigger immediately, use the LEAVE statement.
But from my point of view this is a different topic, as the error message speaks of a syntax error in line 3. Maybe you forgot to set the delimiter to something different than ;:
DELIMITER //
CREATE TRIGGER ...
Related
I try to update some columns using trigger before insert
DROP TRIGGER IF EXISTS update_p_posts_places;
DELIMITER $$
CREATE TRIGGER update_p_posts_places BEFORE
INSERT
ON
`p_posts` FOR EACH ROW
BEGIN
DECLARE
p_post_group_id_ int;
SELECT
`p_post_subgroup`.`p_post_group_id`
INTO
p_post_group_id_
FROM
`p_post_subgroup`
WHERE
`p_post_subgroup`.`p_post_subgroup_id` = NEW.p_post_subgroup_id;
IF(p_post_group_id_ = 5) THEN
BEGIN
DECLARE
place1_id_ int;
place2_id_ int;
place3_id_ int;
place4_id_ int;
place5_id_ int;
SELECT
`Places`.`place1_id`,
`Places`.`place2_id`,
`Places`.`place3_id`,
`Places`.`place4_id`,
`Places`.`place5_id`
INTO
place1_id_, place2_id_, place3_id_, place4_id_, place5_id_
FROM
`Places`
WHERE
`Places`.`place5_id` = NEW.p_post_place_id LIMIT 1;
SET NEW.place5_id = place5_id_;
SET NEW.place1_id = place1_id_;
SET NEW.place2_id = place2_id_;
SET NEW.place3_id = place3_id_;
SET NEW.place4_id = place4_id_;
END $$
ELSE
SET NEW.place5_id = NULL;
END IF;
END $$
DELIMITER ;
It's showing some syntax errors.
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'DECLARE
place1_id_ int;
place2_id_ int;
' at line 20
Here is a working trigger. I tested creating it on MySQL 5.7.
CREATE TRIGGER update_p_posts_places BEFORE INSERT ON `p_posts`
FOR EACH ROW
BEGIN
-- all declarations must be before any other statements
DECLARE p_post_group_id_, place1_id_, place2_id_, place3_id_,
place4_id_, place5_id_ int;
SELECT
`p_post_subgroup`.`p_post_group_id`
INTO
p_post_group_id_
FROM
`p_post_subgroup`
WHERE
`p_post_subgroup`.`p_post_subgroup_id` = NEW.p_post_subgroup_id;
IF(p_post_group_id_ = 5) THEN
SELECT
`Places`.`place1_id`,
`Places`.`place2_id`,
`Places`.`place3_id`,
`Places`.`place4_id`,
`Places`.`place5_id`
INTO
place1_id_, place2_id_, place3_id_, place4_id_, place5_id_
FROM
`Places`
WHERE
`Places`.`place5_id` = NEW.p_post_place_id LIMIT 1;
SET NEW.place5_id = place5_id_;
SET NEW.place1_id = place1_id_;
SET NEW.place2_id = place2_id_;
SET NEW.place3_id = place3_id_;
SET NEW.place4_id = place4_id_;
ELSE
SET NEW.place5_id = NULL;
END IF;
END $$
You can use one DECLARE for multiple local variables, but you must do like var1, var2, var3, ... int. In other words, name the type only once at the end. See documentation: https://dev.mysql.com/doc/refman/8.0/en/declare-local-variable.html
No need for the BEGIN..END inside the IF and definitely do not use $$ until after the last END because that will terminate the parser's interpretation of your whole CREATE TRIGGER statement before it's complete.
this is my trigger
CREATE TRIGGER `proximo_pago` BEFORE INSERT ON `pago`
FOR EACH ROW BEGIN
declare num_orden integer;
select max(orden) from pago where lote=NEW.lote into num_orden;
if(num_orden is NULL)
then
set NEW.orden=1;
else
set NEW.orden=num_orden+1;
end if;
END
and the ERROR
SQL query:
CREATE TRIGGER `proximo_pago` BEFORE INSERT ON `pago`
FOR EACH ROW BEGIN
declare num_orden integer;
MySQL said: Documentation
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 3
I've tried to use DELIMITER but it isn´t works, please help me , thanks
My answer is based only on the necessity of your question which is declaration of the variable.. if the Delimiter doesn't do the trick maybe its an error in your syntax because you didn't SET your SELECT query in a variable. try this first.
DELIMITER $$
CREATE
TRIGGER `proximo_pago` BEFORE INSERT
on `pago`
FOR EACH ROW
BEGIN
DECLARE num_orden int;
SET num_orden = select max(orden) from pago where lote=NEW.lote;
if(num_orden is NULL)
then
set NEW.orden=1;
else
set NEW.orden=num_orden+1;
end if;
END$$
DELIMITER ;
I am using MySQL v5.0.92 and I'm trying to import some data, but I get an error on declare my variables.
BEGIN
DECLARE flag INT;
DECLARE id INT;
while flag=0 begin
SET id=(SELECT top 1 user_id
FROM ac_user_info WHERE user_id>#id order by user_id)
INSERT INTO cuddleew_database1.cewp_usermeta(user_id,meta_key,meta_value)
SELECT id,'first_name',first_name
FROM cuddleew_backup.ac_user_info WHERE user_id=#id
INSERT INTO cuddleew_database1.cewp_usermeta(user_id,meta_key,meta_value)
SELECT id,'last_name',last_name
FROM cuddleew_backup.ac_user_info WHERE user_id=#id
SET flag=(select case #id when(SELECT MAX(user_id)
FROM cuddleew_bakup.ac_user_info) then 1
else 0
END CASE)
END WHILE
END
In MySQL console i get this:
BEGIN DECLARE flag INT;
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your
MySQL server version for the right syntax to use near 'DECLARE flag INT' at line 2.
Can you help me with this and tell me what's wrong. Thanks in advance.
You have to change your delimiter first, so the ; doesn't tell MySQL that this command is over.
DELIMITER $$
[your code here]
END $$
DELIMITER ;
I am trying to create a trigger that marks items as deleted when they are inserted into the database.
Sadly I can't get my DECLARE to stop erroring, I have looked at the DECLARE docs and also at a few examples but I must be missing something.
The query I have so far is:
CREATE TRIGGER set_deleted BEFORE INSERT ON customercontact
FOR EACH ROW
BEGIN
DECLARE numrow INT; /* line 4 */
SELECT COUNT(*)
INTO numrow
FROM orders
WHERE NEW.order_id = 1;
if numrow >= 1 THEN
SET new.deleted = 1;
END IF;
END
The error message is showing:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 4
Thanks for your help and preventing me from defenestrating myself!
Try this:
DELIMITER $$
CREATE TRIGGER set_deleted BEFORE INSERT ON customercontact
FOR EACH ROW
BEGIN
DECLARE numrow INT; /* line 4 */
SELECT COUNT(*)
INTO numrow
FROM orders
WHERE NEW.order_id = 1;
if numrow >= 1 THEN
SET new.deleted = 1;
END IF;
END$$
DELIMITER ;
You need to change the delimiter when you create TRIGGER or STORED PROCEDURE.
By default, MySQL itself recognizes the semicolon as a statement delimiter, so you must redefine the delimiter temporarily to cause MySQL to pass the entire stored program definition to the server. Otherwise, MySQL breaks CREATE TRIGGER, before it reaches the END statement (on the first semicolon, which, in your case, is DECLARE statement).
You can see the documentation for more details:
http://dev.mysql.com/doc/refman/5.5/en/stored-programs-defining.html
I am trying to write trigger in Mysql (5.1), but getting following error, please help.
The error is:
SQL Error (1064): You have an error in your SQL syntax; check the
manual that corresponds to your MySQL server version for the right
syntax to use near '' at line 5.
Purpose for writing trigger:
I am writing application where I am assigning users, and I want to store unassigned usercount to field cluster_count in IX_branchdetails table.After updating the base table.
trigger:
DELIMITER $$
CREATE TRIGGER upd_trg AFTER
UPDATE ON DBNAME.BASETABLE
FOR EACH ROW
BEGIN
DECLARE m_branchcode INTEGER;
DECLARE cnt INTEGER;
DECLARE cursor_branch CURSOR FOR
SELECT DISTINCT branchcode
FROM ix_branchdetails;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
open cursor_branch;
my_loop: loop
set done = false;
fetch cursor_branch into m_branchcode;
if done then
leave my_loop;
end if;
select count(1) into cnt from (select count(1) from BASETABLE Where IX_BRANCHCODE = m_branchcode) as temp;
update DBANAME.ix_branchdetails set DBANAME.ix_branchdetails.cluster_count = cnt where DBANAME.ix_branchdetails.BRANCHCODE = m_branchcode;
end loop my_loop;
close cursor_branch;
END $$
DELIMITER ;
I don't see a declare for the done variable:
DECLARE done TINYINT DEFAULT FALSE;
The semicolon (;) is the default delimiter for MySQL statements. To get a procedure/function/trigger defined, we normally see the statement delimiter changed to a string that doesn't appear in the statement:
DELIMITER $$
CREATE PROCEDURE ...
END$$
DELIMITER ;
If the delimiter is not changed from the semicolon, then when MySQL encounters the first semicolon in your procedure/function/trigger, it sees that as the end of the statement, which is not what you want. You want MySQL to see the entire block of code as a single statement.