i have to get 2 tables data but 2 table columns data in 1 column with comma

Question

i have use this code to get data from 2 tables

SELECT t1.HId,commands=STUFF(   
 (   
   SELECT DISTINCT ',' + t2.commands  
   FROM history_detail t2
   WHERE  t1.HId = t2.History_HID    
   FOR XML PATH('')   
 ),1,1,'') FROM history t1,  history_detail t2  GROUP BY HId  

but i got this in 2 column with extra data

Send("this is your first testcase")
,Sleep(3000)
,WinActive("notepad")
,WinClose("notepad")
,WinWaitActive("notepad")


i have to remove this 
 from the data