Create MySQL procedures - mysql

Question

I am currently trying to create a stored procedure on my MySQL stored on Google Cloud Platform.
The SQL is correct seeing that I can create the procedure locally, but I can't figure out why it won't work from the command line:
mysql> CREATE PROCEDURE helpme
-> (
-> #cid varchar(4)
-> )
-> AS
-> DECLARE #res_cnt INT
-> DECLARE #name CHAR(10)
->
-> SELECT #res_cnt = COUNT(*) FROM dbo.TripGuides WHERE GuideNum = #cid
-> SELECT #name = LastName FROM dbo.Guide WHERE GuideNum = #cid
-> PRINT #name + ' has ' + CAST (#res_cnt AS VARCHAR(10))+' guides.';
ERROR 1064 (42000): 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 '#cid varchar(4)
)
AS
DECLARE #res_cnt INT
DECLARE #name CHAR(10)
SELECT #res_cn' at line 3
mysql>
I've tried a few different things thank I have bumped into. When declaring #cid I tried both
#cid CHAR(4)
#cid VARCHAR(4)
resulting in the same error being thrown.

Answer 1

For MySQL use
CREATE PROCEDURE helpme ( cid VARCHAR(4) )
SELECT CONCAT( ( SELECT LastName
FROM Guide
WHERE GuideNum = cid ),
' has ',
( SELECT COUNT(*)
FROM TripGuides
WHERE GuideNum = cid ),
' guides.'
) AS message;
Just out of curiosity how would I go about declaring res_cnt and name as to the original SQL call i did before?
CREATE PROCEDURE helpme ( cid VARCHAR(4) )
BEGIN
DECLARE res_cnt INT;
DECLARE `name` CHAR(10);
SELECT COUNT(*) INTO res_cnt FROM TripGuides WHERE GuideNum = cid;
SELECT LastName INTO `name` FROM Guide WHERE GuideNum = cid;
SELECT CONCAT( `name`, ' has ', res_cnt, ' guides.' ) AS output_message;
END
And do not forget about DELIMITER re-assign in that case.