I've spent hours and I can't understand why this is highlighted red and I don't know what my error is.
CREATE FUNCTION Student_Section_Count(StudentID INT)
Returns INT
Begin
DECLARE section_Registred INT;
SET section_Registred= (Select COUNT(DISTINCT Section.ID) as 'Students Registration Count'
FROM Section
Inner Join
Registration on registration.StudentID=Section.ID
Where registration.StudentID=StudentID);
Return Section_Registred;
END$$
Delimiter;
It highlights END and Delimiter, as well as INT from Return INT
By default semi-colon ; is the delimiter in mysql. So when using a mysql client, the function definition that is passed to server is only up to the first semi-colon i.e. DECLARE section_Registred INT;. Rest of the definition of function is not passed to server. This produces an error. To incorporate semi-colon in function definition you need to change your delimiter from semi-colon to some thing else. So before defining the function write the below sql to change the delimiter:
DELIMITER $$.
After the above sql write sql for your function. Append the new delimiter $$ to END at the end of definition of your function. Now the whole definition of function is passed to server up to the new delimiter. This will fix your error. Change the delimiter back to default after your function definition ends as below:
DELIMITER ;.
Also remember to choose a delimiter that is not present anywhere inside your function definition.
Well, I guess I figured it out on my own.
DELIMITER $$
CREATE FUNCTION Student_Section_Count(StudentID INT)
Returns INT
Begin
DECLARE section_Registred INT;
SET section_Registred= (Select COUNT(DISTINCT Section.ID) as 'Students Registration Count'
FROM Section
Inner Join
Registration on registration.StudentID=Section.ID
Where registration.StudentID=StudentID);
Return Section_Registred;
END$$
Related
I have stored procedure with input parameter of type number.
CREATE OR REPLACE PROCEDURE my_procedure (p_x number)
AS
I included exception handling code as below, but that do not handle following:
execute my_procedure ('sads')
EXCEPTION
WHEN VALUE_ERROR THEN
DBMS_OUTPUT.PUT_LINE('SQLERRM: ' || SQLERRM);
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('SQLERRM: ' || SQLERRM);
is there any way to change exception for bad arguments?
The error will happen when the procedure is invoked, not inside of the procedure so you can't capture the error as an exception within that procedure itself. A possible solution would be use an additional procedure that validates the arguments. In the example code below the procedure so_arg_test.my_procedure accepts a VARCHAR2 but it will only invoke my_procedure_hidden if the argument actually is a number. For anything other it will raise a value error.
CREATE OR REPLACE PACKAGE so_arg_test AS
PROCEDURE my_procedure (
p_x IN VARCHAR2
);
END so_arg_test;
/
CREATE OR REPLACE
PACKAGE BODY SO_ARG_TEST AS
procedure my_procedure_hidden (p_x IN NUMBER) AS
BEGIN
-- your code
dbms_output.put_line('Inside my_procedure_hidden');
END my_procedure_hidden;
procedure my_procedure (p_x IN VARCHAR2)
AS
BEGIN
IF VALIDATE_CONVERSION(p_x AS NUMBER) = 0 THEN
RAISE VALUE_ERROR;
END IF;
my_procedure_hidden (p_x => my_procedure.p_x);
END my_procedure;
END SO_ARG_TEST;
/
I want to return a value from Stored Procedure which I can use in my Spring Boot server in JPA repository.
Here's my Stored Procedure,I want to know how do I return String from the Procedure.
DELIMITER //
CREATE PROCEDURE GetAllProducts(out query varchar(20))
BEGIN
SET query=SELECT title FROM course where description="just a course";
RETURN #query;
END //
DELIMITER ;
I am selecting 1 value from the query table to return it.
Can someone Help?
Thanks!
If you want to use your SP as datasource (like you execute SELECT, not CALL, in external program) you must select to output stream, not to variable:
CREATE PROCEDURE GetAllProducts()
SELECT title
FROM course
WHERE description="just a course";
Got the Solution,Its working now!
Just tweaked the Procedure a little bit:
DELIMITER //
CREATE PROCEDURE GetAllProdcuts(OUT output VARCHAR(50))
BEGIN
SELECT title into output
FROM course
WHERE description="just a course";
END //
I'm using xampp with phpMyAdmin to manage a MySql database.
When creating a function I got a "No Return Found" error, so I stripped down the function to narrow the origin of the error I got to the simplest case where it still doesn't work.
And the error message is this:
Apparently if the RETURN statement isn't the only thing on the code I get an error.
Assuming the actual code being executed against MySQL is:
CREATE FUNCTION `Contagem`() RETURNS INT(11)
SET #c = 0;
RETURN #c;
This will fail, because you have not wrapped the function in BEGIN...END.
Try instead to write this as your function declaration:
BEGIN
SET #c = 0;
RETURN #c;
END;
Alternatively, declare the function yourself directly in MySQL:
DELIMITER $$
CREATE FUNCTION `Contagem`() RETURNS INT(11)
BEGIN
SET #c = 0;
RETURN #c;
END $$
DELIMITER ;
When reviewing this post I was reading more carefully the error message I realized the MySql code to define the function didn't have BEGIN and END in it.
I assumed when typing function code with several lines that phpMyAdmin would know how to handle it, since the code text box has support to multiple lines of code.
So, putting BEGIN at the beginning and END at the end of the code solved my problem.
CREATE FUNCTION `remover_acentos` (text_1 text)
RETURNS text
select
replace(text_1,'áâãäéêëíîÏóöôõúûüÁÂÃÄÉÊËÍÎÏÓÖÔÕÚÛÜçÇ','aaaaeeeiiioooouuuAAAAEEEIIIOOOOUUUcC');
The function above is throwing the error below.
Error 1415: Not allowed to return a result set from a function
Why is this error occurring?
What's the SELECT doing there? That's causing the error. Use RETURN to return a scalar value.
CREATE FUNCTION `remover_acentos` (text_1 text)
RETURNS text
RETURN replace(text_1,'áâãäéêëíîÏóöôõúûüÁÂÃÄÉÊËÍÎÏÓÖÔÕÚÛÜçÇ','aaaaeeeiiioooouuuAAAAEEEIIIOOOOUUUcC');
But this won't do what you want, I guess. If you want to replace any single occurrence of one of the characters, you'll need more than one replace() -- for each character, use one. Like
DELIMITER $$
CREATE FUNCTION `remover_acentos` (text_1 text)
RETURNS text
BEGIN
SET text_1 = replace(text_1,'á','a');
SET text_1 = replace(text_1,'à','a');
...
RETURN text_1;
END;$$
DELIMITER ;
delimiter //
CREATE DEFINER=root#localhost PROCEDUREgetData(IN templateName VARCHAR(45),IN templateVersion VARCHAR(45),IN userId VARCHAR(45))
BEGIN
set #version = CONCAT("SELECT saveOEMsData_answersVersion FROMsaveOEMsData WHERE saveOEMsData_templateName = '",templateName,"' ANDsaveOEMsData_templateVersion = ",templateVersion," AND saveOEMsData_userId= ",userId);
PREPARE s1 from #version;
EXECUTE S1;
END // delimiter ;
I am retrieving saveOEMsData_answersVersion, but I have to use it in an IF loop, as in if the version == 1, then I would use a query, else I would use something else. But I am not able to use the version. Could someone help with this?? I am only able to print but not able to use the version for data manipulation. The procedure works fine but I am unable to proceed to next step which is the if condition.
The if condition would have something like the below mentioned.
IF(ver == 1) THEN SELECT "1";
END IF;
IF is allowed inside a Procedure, you can not use IF inside SQL, in SQL you can use CASE, but that doesn't have the same abilities.
Build a second procedure to handle the IF/Then for the results of getData