MySQL group_concat with 2 joins returns unwanted results?

If a user matches one category, but matches 2 rows in imei, then the category will be duplicated in the result set. You can get rid of redundant values from group_concat using DISTINCT.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.