I try to make loop in MySQL, but it always shows me an error.
Is it correct code or did I make a mistake?
DROP PROCEDURE IF EXISTS proc_loop_test;
CREATE PROCEDURE proc_loop_test()
BEGIN
DECLARE int_val INT DEFAULT 0;
test_loop : LOOP
IF (int_val = 10) THEN
LEAVE test_loop;
END IF;
SET int_val = int_val +1;
SELECT int_val;
END LOOP;
END;
#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
The problem is that the default delimiter is ; and stops the execution/parsing of the procedure code. Change the delimiter before you create the procedure and set it back to ; after the procedure code like this:
DROP PROCEDURE IF EXISTS proc_loop_test;
DELIMITER #
CREATE PROCEDURE proc_loop_test()
BEGIN
...
END #
DELIMITER ;
Related
I'm trying to create this trigger but i'm getting
[Err] 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 '; CREATE TRIGGER ca_passwd_trigger BEFORE UPDATE ON users
FOR EACH ROW BEGIN ' at line 1
delimiter $$
DROP TRIGGER IF EXISTS ca_passwd_trigger ;
$$
CREATE TRIGGER ca_passwd_trigger BEFORE UPDATE ON users
FOR EACH ROW
BEGIN
IF ((NEW.passwd <=> OLD.passwd) = 0) THEN
SET NEW.passwd_modified_at = NOW();
END IF;
END;$$
delimiter ;
In your query you added the query terminator ; with the delimiter $$ in two places. The below query is having proper query terminators and delimiters.
DELIMITER $$
DROP TRIGGER IF EXISTS ca_passwd_trigger; -- removed the delimiter $$ after the terminator ;
CREATE TRIGGER ca_passwd_trigger BEFORE UPDATE ON users
FOR EACH ROW
BEGIN
IF ((NEW.passwd <=> OLD.passwd) = 0) THEN
SET NEW.passwd_modified_at = NOW();
END IF;
END$$ -- removed the terminator ; before the delimiter $$
DELIMITER ;
This might be a noob question, but I tried googling about this issue and I haven't found any solution for it (I think). Anyway, I need to compare a date in a row from a mysql table to the current date and update the row depending on the results. I made a stored procedure that will be called by an event every x minutes. Here is my code for the sp:
delimiter //
CREATE PROCEDURE checkPromoValidity()
BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE id INT;
DECLARE lvn_status INT;
DECLARE lvn_validUntil DATE;
DECLARE cur1 CURSOR FOR SELECT promos.PROMO_NUMBER,promos.VALID_UNTIL,promos.status FROM MDCH_NEW.promos;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
open cur1;
check_loop: LOOP
fetch cur1 into id,lvn_validUntil,lvn_status;
IF done THEN
LEAVE check_loop;
END IF;
IF (lvn_validUntil > CURDATE()) THEN
update mdch_new.promos set MDCH_NEW.PROMOS.status = 0 where mdch_new.promos.PROMO_NUMBER = id;
END IF;
end LOOP;
close cur1;
END //
MDCH_NEW = database name
PROMOS= table name
EDIT: I CHANGED my delimiter to // just to see
edit2: added space after the final word, still getting the error below.. :(
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 23
delimiter $$
create procedure return7 ()
BEGIN
select 7;
END
$$
call return7();
you are free to re-use this code
I'm trying to create a function in MySQL workbench, I have this SQL code:
DELIMITER $$
CREATE FUNCTION `regex_replace` (pattern VARCHAR(1000),replacement VARCHAR(1000),original VARCHAR(1000))
RETURNS VARCHAR(1000)
DETERMINISTIC
BEGIN
DECLARE temp VARCHAR(1000);
DECLARE ch VARCHAR(1);
DECLARE i INT;
SET i = 1;
SET temp = '';
IF original REGEXP pattern THEN
loop_label: LOOP
IF i>CHAR_LENGTH(original) THEN
LEAVE loop_label;
END IF;
SET ch = SUBSTRING(original,i,1);
IF NOT ch REGEXP pattern THEN
SET temp = CONCAT(temp,ch);
ELSE
SET temp = CONCAT(temp,replacement);
END IF;
SET i=i+1;
END LOOP;
ELSE
SET temp = original;
END IF;
RETURN temp;
END;
$$
DELIMITER ;
When I put this in phpMyAdmin, my function is created without any problems.
When I click on "Add Routine" in MySQL Workbench and then paste this code, I get this error:
Syntax error: 'DELIMITER' (identifier) is not valid input at this position
I'm no expert on MySQL functions, so I don't really know what to do with this. What is the problem here?
I really want to fix this, because MySQL Workbench now shows my function as _SYNTAX_ERROR instead of regex_replace.
When using the builtin procedure editor, MySQL Workbench adds a few extra commands:
USE `test`; // <----------
DROP procedure IF EXISTS `p2`; // <----------
DELIMITER $$
USE `test`$$ // <----------
CREATE PROCEDURE test.`p2` ()
LANGUAGE SQL
DETERMINISTIC
COMMENT 'Adds "nson" to first and last names in the record.'
BEGIN
SELECT 'Hello World';
END $$
DELIMITER ; // <----------
If you apply the above slashes to your procedure, it should help :)
For reference:
Stored Procedures Using MySQL Workbench
I am trying to create a trigger for my table named quailmiles. When the total miles hits a certain number I want the persons status (which is a attribute in that same table) to change. For some reason my code is not working.
The error currently reads:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '' at line 9.
delimiter $$
CREATE TRIGGER status_update
AFTER UPDATE ON quailmiles
FOR EACH ROW BEGIN
IF (total_miles > 2000) THEN
UPDATE quailmiles SET status = 'gold';
ELSE IF (total_miles > 4000) THEN
UPDATE quailmiles SET status = 'platinum';
END IF;
END $$
delimiter;
Your logic is backwards. You need to test against 4000 before 2000:
delimiter $$
CREATE TRIGGER status_update
BEFORE UPDATE ON qualmiles
FOR EACH ROW
BEGIN
IF (NEW.total_miles > 4000) THEN
SET NEW.status = 'platinum';
ELSEIF (NEW.total_miles > 2000) THEN
SET NEW.status = 'gold';
END IF;
END $$
delimiter;
I also changed the syntax to be a "before" update trigger. Also, I made the name "qualmiles". "Quailmiles" sounds funny.
I think you want ELSEIF rather than ELSE IF. (Remove the space.)
The error is being returned because that second IF isn't being ended with an END IF.
Also, you don't really want to issue an UPDATE against the same table. You'd rather this be handled in a BEFORE UPDATE trigger, and set the value of the column.
e.g.
CREATE TRIGGER status_update
BEFORE UPDATE ON quailmiles
FOR EACH ROW
BEGIN
IF (NEW.total_miles > 4000) THEN
SET NEW.status = 'platinum';
ELSIF (NEW.total_miles > 2000) THEN
SET NEW.status = 'gold';
END IF;
END$$
I read from the MySQL doc
For the UDF mechanism to work, functions must be written in C or C++
and your operating system must support dynamic loading.
...
A UDF contains code that becomes part of the running server, so when
you write a UDF, you are bound by any and all constraints that apply
to writing server code
I want to create a MySQL function on the fly (by submitting it with PHP's mysqli) so that I can use it in a subsequent query.
Will I be unable to create a function on a basic web-hosting server's installation of MySQL (e.g. HostGator, 1and1, GoDaddy) since I'm not the root admin user?
What is wrong with my syntax in the below query? It doesn't work either in the direct MySQL shell (the black box) or through my php script. The error returned is:
Warning: mysqli::query() [mysqli.query]: (42000/1064): 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 'delimiter // create function IF NOT EXISTS LeaveNumber(str varchar(50)) retur' at line 1 in C:\wamp\www_quac\includes\database.php on line 55
This is my query in php:
if ($Database->query("
delimiter //
create function IF NOT EXISTS LeaveNumber(str varchar(50)) returns varchar(50)
no sql
begin
declare verification varchar(50);
declare result varchar(50) default '';
declare character varchar(2);
declare i integer default 1;
if char_length(str) > 0 then
while(i <= char_length(str)) do
set character = substring(str,i,1);
set verification = find_in_set(character,'1,2,3,4,5,6,7,8,9,0');
if verification > 0 then
set result = concat(result,character);
end if;
set i = i + 1;
end while;
return result;
else
return '';
end if;
end //
delimiter ;")) { echo 'hey the function was written. its called LeaveNumber()'; }
You have two syntax errors in your code:
create function does not support if exists
character is a reserved SQL keyword.
The below appears to work for me. I'd suggest using an SQL 'ide' such as MySQL workbench. It will show you syntax errors straight away.
DROP function IF EXISTS LeaveNumber;
delimiter //
create function LeaveNumber(str varchar(50)) returns varchar(50)
no sql
begin
declare verification varchar(50);
declare result varchar(50) default '';
declare nextChar varchar(2);
declare i integer default 1;
if char_length(str) > 0 then
while(i <= char_length(str)) do
set nextChar = substring(str,i,1);
set verification = find_in_set(nextChar,'1,2,3,4,5,6,7,8,9,0');
if verification > 0 then
set result = concat(result,nextChar);
end if;
set i = i + 1;
end while;
return result;
else
return '';
end if;
end //
delimiter ;