mysql - concatenating multiple fields in one record sql -


I would like to get the amount per month (gross) for each user and show each event field. Therefore I will need to show these columns

My table 

  Order ID, user, month, event, gross 1 jack October Event 2 30 2 Jack November Event 3 20 3 will be the result for the Jack November Event 3 20 4 Jack Number Event 2 30 SAM November Event 2 30 6 Zone October Event 3 20 Jack  > 
 So I believe that multiple records of one field should be found in the records. I have seen something like a union that is keeping values ​​separated by commas in a column, but it is not sure how to use it.  
 
 "post-text" itemprop = "text"> 
 I think you are looking for  
 something like this will work:  
  select     based on xyz GROUP month from user, month, group_concat (event), sim (gross)

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