I have been having a problem with this one. Granted this is the first trigger I have ever made (pretty new to this). I think it's a formatting issue. I have a table called filleradown. I need for every time a record is inserted to check if the value of B3_4_5 in the new row is a 1. If it is I need it to then run a select to find the last entry that B3_4_5 was a 0. Then update the NEW.stoptime value to be the 'time' value of the last 0 record.
I think I have all the parts there, but can't seem to get it to run. Please help.
DELIMITER $$
CREATE TRIGGER downinsert
BEFORE INSERT ON 'filleradown' FOR EACH ROW BEGIN
DECLARE downtime DATETIME;
IF (NEW.B3_4_5 = '1') THEN
SELECT time INTO downtime FROM filleradown WHERE B3_4_5 = 0 ORDER BY time DESC LIMIT 1;
SET NEW.stoptime = downtime;
END IF
$$
DELIMITER ;
UPDATE: I got the code a little better here, but still getting some errors.
DELIMITER $$
CREATE TRIGGER downinsert BEFORE INSERT ON filleradown
FOR EACH ROW
BEGIN
DECLARE dt DATETIME;
IF NEW.B3_4_5 = '1' THEN
SELECT MAX(time) INTO dt FROM filleradown WHERE filleradown.B3_4_5 = 0;
SET NEW.stoptime = dt;
END IF
$$
DELIMITER ;
I get the 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 8
Got it fixed. Was literally missing the END statement. facepalm
DELIMITER $$
CREATE TRIGGER downinsert BEFORE INSERT ON filleradown
FOR EACH ROW
BEGIN
DECLARE dt DATETIME;
IF NEW.B3_4_5 = '1' THEN
SELECT MAX(time) INTO dt FROM filleradown WHERE filleradown.B3_4_5 = 0;
SET NEW.stoptime = dt;
END IF;
END $$
DELIMITER ;
Related
I want to update two columns after current row update by trigger.
endtime and starttime are datetime type. duration is integer and it will represent num of seconds. Sequel Pro tell me "[ERROR in query 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 5
Execution stopped!"
CREATE TRIGGER `end_time_update` AFTER UPDATE ON `mytable`
FOR EACH ROW
BEGIN
UPDATE mytable
set endtime = now(), duration = TIMESTAMPDIFF(SECOND, starttime, endtime)
where id = new.id;
END;
You need to change the delimiter. Otherwise the DB will terminate the definition of the trigger at the first ;
delimiter |
CREATE TRIGGER `end_time_update` BEFORE UPDATE ON `mytable`
FOR EACH ROW
BEGIN
if NEW.some_col <> OLD.some_col
then
set NEW.endtime = now();
set NEW.duration = TIMESTAMPDIFF(SECOND, NEW.starttime, NEW.endtime);
end if;
END
|
delimiter ;
You can't put an update on the same table in the trigger. That would create an endless loop. But you can use NEWto refer to the current record to modify it.
You should set your delimiter so that the semi-colons inside the trigger won't be interpreted as the end of the trigger:
-- Set the delimiter
DELIMITER $$
CREATE TRIGGER `end_time_update` AFTER UPDATE ON `mytable`
FOR EACH ROW
BEGIN
UPDATE mytable
set endtime = now(), duration = TIMESTAMPDIFF(SECOND, starttime, endtime)
where id = new.id;
END;
$$
-- Reset the delimiter
DELIMITER ;
I am trying to create this trigger to prevent insertion of null dates:
CREATE TRIGGER responses_before_insert BEFORE INSERT ON responses
FOR EACH ROW
BEGIN
IF (NEW.date_of_plan IS NULL OR NEW.date_of_plan = '0000-00-00') THEN
SET NEW.date_of_plan = CURDATE();
END IF;
IF (NEW.date_of_update IS NULL OR NEW.date_of_update = '0000-00-00') THEN
SET NEW.date_of_update = CURDATE();
END IF;
END
However, 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 5
Can anyone explain what is wrong?
Thanks!
The issue was resolved by changing the delimiter before the query, ie. I executed
DELIMITER $$
Before the trigger query.
Like you did, you need a delimiter.
DELIMITER $$
CREATE TRIGGER responses_before_insert BEFORE INSERT ON responses
FOR EACH ROW
BEGIN
IF (NEW.date_of_plan IS NULL OR NEW.date_of_plan = '0000-00-00') THEN
SET NEW.date_of_plan = CURDATE();
END IF;
IF (NEW.date_of_update IS NULL OR NEW.date_of_update = '0000-00-00') THEN
SET NEW.date_of_update = CURDATE();
END IF;
END $$
DELIMITER ;
Then you can also set it back as done on the last line. Better practie!
I am trying to create a trigger that marks items as deleted when they are inserted into the database.
Sadly I can't get my DECLARE to stop erroring, I have looked at the DECLARE docs and also at a few examples but I must be missing something.
The query I have so far is:
CREATE TRIGGER set_deleted BEFORE INSERT ON customercontact
FOR EACH ROW
BEGIN
DECLARE numrow INT; /* line 4 */
SELECT COUNT(*)
INTO numrow
FROM orders
WHERE NEW.order_id = 1;
if numrow >= 1 THEN
SET new.deleted = 1;
END IF;
END
The error message is showing:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 4
Thanks for your help and preventing me from defenestrating myself!
Try this:
DELIMITER $$
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.
Hi
Is there any error in this TRIGGER Statement.When ever i try to run this in phpAdmin its giving error saying "#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 "SELECT Count(*) into SIM_CCode_Count".I cant get what's wrong in this..please help me
This is my trigger statement
CREATE TRIGGER Is_CountryCode_There After INSERT on mr_details FOR EACH ROW
BEGIN
DECLARE SIM_CCode_Count INTEGER;
DECLARE NET_CCode_Count INTEGER;
SELECT Count(*) into SIM_CCode_Count FROM Country_Main where CountryCode=NEW.SimCntISO;
IF SIM_CCode_Count=0 THEN
INSERT INTO Country_Main(CountryCode,CountryName) Values(NEW.SIMCntISO,"Unknown");
END IF
If NEW.SimCntISO<>NEW.NetCntISO then
SELECT Count(*) into NET_CCode_Count FROM Country_Main
where CountryCode=NEW.NetCntISO
IF NET_CCode_Count=0 THEN
INSERT INTO Country_Main(CountryCode,CountryName) Values(NEW.NETCntISO,"Unknown");
END IF
END IF
END
Without proper explanation about your requirement and about tables and what you are expecting this trigger to do,its very difficult to say if any issues there in your trigger..
But as far as i can see there is some minor correction need to be done..
Try this Code and let know in detail your requirements..
CREATE TRIGGER Is_CountryCode_There After INSERT on mr_details FOR EACH ROW
BEGIN
DECLARE SIM_CCode_Count INTEGER;
DECLARE NET_CCode_Count INTEGER;
SELECT Count(*) into SIM_CCode_Count FROM Country_Main where CountryCode=NEW.SimCntISO;
IF SIM_CCode_Count=0 THEN
INSERT INTO Country_Main(CountryCode,CountryName) Values(NEW.SIMCntISO,"Unknown");
END IF;
If (NEW.SimCntISO<>NEW.NetCntISO) then
SELECT Count(*) into NET_CCode_Count FROM Country_Main
where CountryCode=NEW.NetCntISO;
IF NET_CCode_Count=0 THEN
INSERT INTO Country_Main(CountryCode,CountryName) Values(NEW.NETCntISO,"Unknown");
END IF;
End IF;
END;
You have to declare a mysql-statement delimiter before the trigger statement:
DELIMITER |
CREATE TRIGGER ...
(your code)
END|
DELIMITER ;
Otherwise MySQL interprets your ; in this statement as statement commit and executes the code immidiately. With the delimiter changed to a different character you can use the semicolon inside the trigger declaration safely.
See here: http://dev.mysql.com/doc/refman/5.0/en/create-procedure.html