Mysql Stops running when this stored procedure is executed - stored-procedures

Question

Morning Guys,
This is a follow on from this question. mysqld.exe keeps crashing.
I have narrowed the crashing down to a single stored procedure which just seems to fall over when this stored procedure gets executed.
I have split it down from its original state to three stored procedures.
The main procedure spProductGroupMenu is as follows:
DELIMITER $$
USE `phclothing`$$
DROP PROCEDURE IF EXISTS `spProductGroupMenu`$$
CREATE DEFINER=`root`#`localhost` PROCEDURE `spProductGroupMenu`(
spGrp VARCHAR(3),
spProductType ENUM('clothing','parts')
)
BEGIN
DECLARE qryType ENUM('group','manufacturer','nothing');
IF spProductType='clothing' THEN
SET qryType = (SELECT
(CASE WHEN
(SELECT
COUNT(DISTINCT(productGroup))
FROM
tblclothingitems
WHERE
productGroup=spGrp)>0
THEN 'group' ELSE
(CASE WHEN
(SELECT
COUNT(DISTINCT(productManufacturer))
FROM
tblclothingitems
WHERE
productManufacturer=spGrp)>0
THEN 'manufacturer' ELSE
'nothing' END) END));
ELSE
SET qryType = (SELECT
(CASE WHEN
(SELECT
COUNT(DISTINCT(productGroup))
FROM
tblpartsitems
WHERE
productGroup=spGrp)>0
THEN 'group' ELSE
(CASE WHEN
(SELECT
COUNT(DISTINCT(productManufacturer))
FROM
tblpartsitems
WHERE
productManufacturer=spGrp)>0
THEN 'manufacturer' ELSE
'nothing' END) END));
END IF;
IF qryType='manufacturer' THEN
CALL spPGMMans(spGrp,spProductType,qryType); ************
ELSEIF qryType='group' THEN
CALL spPGMGrp(spGrp,spProductType,qryType); ************
ELSE
-- This is not going to be used
SELECT
DISTINCT(productgroup) grpCode,
(CASE WHEN spProductType='clothing' THEN
CONCAT('/',grpSEO,'.html')
ELSE
CONCAT(spProductType,'/',grpSEO,'.html') END)seoLink,
pageH1 seoLinkTitle,
'allGroups' entryType,
qryType
FROM
tblclothingitems ci
LEFT JOIN
tblclothinggroups cg
ON
ci.productGroup = cg.grpcode
UNION ALL
SELECT
DISTINCT(productManufacturer) grpCode,
(CASE WHEN spProductType='clothing' THEN
cm.urlExt
ELSE
CONCAT(spProductType,'/',cm.urlExt) END)seoLink,
manTitle seoLinkTitle,
'allMans' entryType,
qryType
FROM
tblclothingitems ci
LEFT JOIN
tblclothingmanufacturers cm
ON
ci.productManufacturer = cm.manCode
ORDER BY entryType, seoLinkTitle ASC;
END IF;
END$$
DELIMITER ;
This used to consist of a series of queries with union all statements depending on what was passed in but this raised the alarm about the mysql server falling over. So where the ************ are is where i have divided the stored procedure into three. Each of these stored procedures runs on the server in its own right but for some reason when this stored procedure gets called the server just falls over and stops running.
I have been checking the logs throughout and it is when this stored procedure is run that the connection to the server goes.
If anybody has any clues as to why this may be happening or if anybody has had experience of this situation then please let me know.
Many thanks in advance.
Graham

Answer 1

Ok well this clearly very strange. Following a hunch I clicked to the end of every line in the stored procedure and removed all white space just in case there were any erroneous non printable characters that were causing an issue, low and behold it seemed to fix it.
To test the theory I then reversed the stored procedure again back to the point when it was causing the server to crash. I ran it on the server and it worked as well, which is clearly very odd.
Needless to say I am completely dumb-founded as to why this error occurred in the first place but can only presume that it was a non-printing character at the end of a line in the stored procedure.
Cheers if you took a look!
Graham