MySQL stored procedures syntax error - mysql

Question

I am try to execute below code for my stored procedure and it throws error at line number 14. I am unable to locate what is error, help me to resolve.
DELIMITER $$
CREATE PROCEDURE usp_SetGems (
-- Add the parameters for the stored procedure here
p_requestid int/* =null */,
p_akcija int/* =null */)
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
-- Insert statements for procedure here
if p_akcija = 0 then
declare #v_userId char(36);
declare #v_vingems int;
select #v_userId:=r.user_id, #v_vingems := r.value from Requests r
where r.Id=p_requestid;
update Users
set balance=balance+#v_vingems
where id=v_userId;
else
declare #v_userrId longtext;
declare #v_vingemss int;
select #v_userrId.user_id:=r.user_id, #v_vingemss := r.value from Requests r
where r.Id=p_requestid;
update Users
set balance=balance-#v_vingems
where id=v_userrId;
end if;
end; $$
DELIMITER ;

Answer 1

Your Declare statement are wrong (declare #v_userId char(36),declare #v_vingems int; ..... ). Below is correct code of your procedure:-
DELIMITER $$
CREATE PROCEDURE usp_SetGems (
-- Add the parameters for the stored procedure here
p_requestid int/* =null */,
p_akcija int/* =null */)
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
-- Insert statements for procedure here
if p_akcija = 0 then
BEGIN
select r.user_id, r.value INTO #v_userId, #v_vingems from Requests r
where r.Id=p_requestid;
update Users
set balance=balance+#v_vingems
where id=v_userId;
END;
else
BEGIN
select r.user_id, r.value INTO #v_userId, #v_vingems from Requests r
where r.Id=p_requestid;
update Users
set balance=balance-#v_vingems
where id=v_userrId;
END;
end if;
end $$
DELIMITER ;

Answer 2

You have a reserved word in your select. "into"
select r.user_id,r.value **into** v_userrId, v_vingems from Requests r
where r.Id=p_requestid;