I can't seem to get my stored procedure to show the OUT Parameter when it is called. It just shows '0 row affected' with no display of the OUTPUT Variable. The OUTPUT is the value of a variable that was declared. This is my procedure
CREATE DEFINER=`root`#`%` PROCEDURE `test`(IN `masterId` INT, IN `subId` INT, OUT current_balance INT)
BEGIN
declare current_balance INT;
set current_balance = 2;
END
This is how I am calling it:
call test('274', '399', #res)
You have overridden the parameter with a local variable.
I prefer to give names to parameters to avoid conflicts:
CREATE DEFINER=`root`#`%` PROCEDURE `test`(
IN in_masterId INT,
IN in_subId INT,
OUT out_current_balance INT
)
BEGIN
set out_current_balance = 2;
END;
Related
I have create MySQL procedure having multiple IN parameters. I want to call procedure with few parameters but when I leave other fields blank it shows this error:
DELIMITER $$
CREATE DEFINER=itzakeed_akeed#localhost PROCEDURE ApiKez(
IN Choice VARCHAR(100),
IN ValidKey VARCHAR(100),
IN azid INT(5),
IN amts FLOAT(50)
)
BEGIN
DECLARE GetKey VARCHAR(100);
DECLARE Balance FLOAT;
CASE WHEN Choice='KeyCheck' THEN
SELECT COUNT(id) INTO GetKey
FROM users
WHERE api_key=ValidKey;
if key is valid
IF GetKey=1 THEN
SELECT *
FROM users
WHERE key=ValidKey;
ELSE
SELECT 0;
END IF;
ELSE
SELECT "INVALID INPUT CHOICE";
END CASE;
END
$$
DELIMITER ;
No you cannot call a procedure with less parameters than what is required. However, you can pass null or empty strings and check if a parameter has a value from withing the stored procedure.
I have the following table created in mysql database.
create table stud_info(Student_ID int,Name varchar(10),Class varchar(10),Marks int)
I have also created a stored procedure to retrieve the name given the id like below:
DELIMITER //
create procedure selectEmp2(IN num1 INT,OUT name varchar(20))
BEGIN
select Name INTO name from myDB.stud_info where Student_ID=num1;
END//
When I am calling the stored procedure , I am getting null value. Please let me know where I am going wrong.
I think your stored procedure should work, but I would advise giving names to parameters that are likely to be unique. I also prefer explicit variable assignment, because select into can mean different things. Does this work?
DELIMITER //
create procedure selectEmp2(IN in_num1 INT, OUT out_name varchar(20))
BEGIN
select si.Name into out_name
from myDB.stud_info si
where si.Student_ID = in_num1;
END;//
Try this:
DELIMITER //
create procedure selectEmp2(IN _num1 INT,OUT _name varchar(20))
BEGIN
select Name INTO _name
from myDB.stud_info
where Student_ID=_num1;
END//
I am calling a stored procedure (1) within a stored procedure (2). Is there a way to pass values of (1) INTO parameters of (2) so that I can return to the calling program? Thank you.
Yes. You can define parameters to be INOUT or OUT.
This allows the procedure to pass values back to the caller.
As a brief example, proc1 has parameters that are defined as INOUT and OUT. In proc1 values are assigned to those parameters.
And proc2 calls proc1. The values set in proc1 are available to proc2.
DELIMITER ;
CREATE PROCEDURE proc1(INOUT ua INT, OUT ob INT)
BEGIN
SET ua = ua + 1;
SET ob = 1;
END$$
CREATE PROCEDURE proc2()
BEGIN
DECLARE a INT;
DECLARE b INT;
SET a = 0;
SET b = 0;
CALL proc1(a,b);
SELECT a, b;
END$$
DELIMITER ;
CALL proc2();
a b
---- ----
1 1
I'm working on a project and I need to pass some values to the table with stored procedure in MySQL. So I made my procedure like this.
create procedure KullanıcıKayıt(
IN kullaniciAd nvarchar(50),
IN kullaniciSoyad nvarchar(50),
IN kullaniciSifre int(10),
IN kullaniciMail nvarchar(50),
IN kullaniciTelNo int(10),
IN kullaniciAdres nvarchar(100),
IN kullaniciSehirAd nvarchar(50),
IN kullaniciSehirIlceAd nvarchar(50)
)
and these are the rest of my procedure
BEGIN
DECLARE sehirId INT DEFAULT 0;
DECLARE ilceId INT DEFAULT 0;
Select #sehirId=sehirId from sehir
where kullaniciSehirAd=sehirAd;
Select #ilceId=sehirIlceId from sehirIlce
where kullaniciSehirIlceAd=sehirIlceAd;
Insert Into kullanici(kullaniciAd, kullaniciSoyad, kullaniciSifre, kullaniciMail,
kullaniciTelNo, kullaniciAdres, kullaniciSehir, kullaniciSehirIlce) values (kullaniciAd,
kullaniciSoyad, kullaniciSifre, kullaniciMail, kullaniciTelNo, kullaniciAdres,
kullaniciSehir, kullaniciSehirIlce)
END
then I got three syntax errors. One of them is on the "0" after the sehirId
2nd of them on the DECLARE vefore ilceId
and the last one on the END.
What's wrong with my syntax?
Thanks.
You are missing a delimiter after END, add ; there as well as after your insert statement:
...
kullaniciSehir, kullaniciSehirIlce);
END;
If you are executing it in a client of some sort, you might need to add DELIMITER statements above and below your create proc statement:
DELIMITER |
create procedure KullanıcıKayıt(
...
END;
|
DELIMITER ;
DELIMITER $$
DROP PROCEDURE IF EXISTS `pawn`.`simpleproc`$$
CREATE DEFINER=`root`#`localhost` PROCEDURE `pawn`.`simpleproc`(OUT param1 int, inout incr int)
BEGIN
declare incr Integer;
set incr= incr+1;
SELECT count(*) into param1 FROM pawnamount;
END $$
This is my code to create a stored procedure....It's created..
For execute..
call simpleproc(#param1,#incr);
select #param1,#incr
The Result will be null values.. It is the simple one.. I've tried many times.But,I get null values only..
DECLARE incr INT; -- incr is NULL here, add DEFAULT 0 if you want it to have a value
SET incr = incr + 1 -- NULL + 1 is still NULL
SELECT COUNT(*) INTO param1 FROM pawnamount; -- If the table pawnamount is empty, it generates an empty set, which in a parameter assignment becomes NULL.
Since you define incr as an INOUT paramater, you should not declare it again in the body of your procedure. This way you can increment it properly as long as it is initialized before being passed to your procedure.
Here's the code:
DELIMITER $$
DROP PROCEDURE IF EXISTS `pawn`.`simpleproc`$$
CREATE DEFINER=`root`#`localhost` PROCEDURE `pawn`.`simpleproc`(OUT param1 int, inout incr int)
BEGIN
set incr= incr+1;
SELECT count(*) into param1 FROM pawnamount;
END $$
DELIMITER ;
set #incr = 0;
call simpleproc(#param1,#incr);
select #param1,#incr;