stored procedures - Have an issue of extrem slow sp and he dont do his job -

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I found this SP: 

  drop table when split value is dimmed; Create tablet splitwalls dump (value VARCHAR (1000) primary key); DELIMITER $$ drop process if the current changes the site redirects $$ The process of making 'Change Sites Redirects' (Productman Address varchar (255), subdomain ii vendor varchar (255)) has been annulled the declaration of SQL security Inverters varchar (1000) ; DECLARE tvalue varchar (1000); DECLARE prepValue varchar (1000); Removal subdomain full address varchar (1000); Total records total difference; Clear tclientid; DECLARE sitedone INT DEFAULT 0; DECLARE splitdone INT DEFAULT 0; Derler Damon Vrchar (1000); DECLARE curlSites for Coors (Select domains; Clients from sites where redirections.com = 'N'); Set set for DECLARE set = 1; Set sitedone: = 0; Open curlSites; Scan_Sites: WHILE (sitedone = 0) if sitedone = 1 then skip Scan_Sites; End; ELSE DECLARE for curlStringDump cursor (select `value 'from SplitValuesDump); Set set for handler not set DECLARE = ​​1 splitdone; Tudium in tampering, Teclionit; Call split_string (tadman, ';'); Open curlStringDump; SET split: = 0; ScanDump: WHILE (splitdone = 0) if divided = 1 then leave scandend; End; Originally start at the preview; Set subdomainfloddress: = subdomainname address; If the costume & lt; & Gt; "" Then start if the main account, like a subdomain such as a productman account or temval, is set to aggregate total domain: = total domains 1; If a subdomain is like talvalaminetrider, then set the sistdiine complete address: = tarvalue; End; end if; End; ELSE Total Set Domain: = Total Domain + 1; Set last day: = Taivalue; End; end if; End; end if; End; end if; Finally scandump; Stop CurlStringDump; SET split: = 0; SET prepival: = 'n'; If the last time = '' and total domain = 2 then set the preweave: = subdomain fall address || CHAR (2) || ProdimainAddress; Insert sites from sites_tmp * from sites where the client = tclientid limits 1; UPDATE sites_tmp SET redirectsubdomain = prepValue WHERE Client = tclientid limit1; End; Set ELSE PRePValue: = ProdimainAddress || CHAR (2) || Last day || CHAR (1) || Subdomain fall address CHAR (2) || LastDomain; Insert sites from sites_tmp * from sites where the client = tclientid limits 1; UPDATE sites_tmp SET redirectsubdomain = prepValue WHERE Client = tclientid limit1; End; end if; End; end if; Finally when Scan_Sites; Stop CurlSites; SET sitedone: = 0; End $ $

I try to get some information from the column data, divides its data and brings some data ions there. Repeat on each table site and then update the sites sites_tmp

I have a problem that I do not know how can I debug or do it faster? What ur recommend here? And why is it so slow ??? And finally did not pass it all the records?


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