Sql Merging multiple records into one record

Question

I have table with two columns user_id and tags.

  user_id    tags
    1    
    1    
    1    

        

Answer 1

You should look into the GROUP_CONCAT function in mysql.A good example is here

In your case it would be something like:

SELECT user_id, GROUP_CONCAT(tags) FROM tablename GROUP BY user_id