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how to count same group value in each date

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dates
john
smith
dalton



1
01.01.2017 00:00:00
2
1
0



2
02.01.2017 00:00:00
1
0
2






    
                		
                
                    

                          
                                
                                
                        
                         



                        
                        
                        

                        

                        
                        

                          
                                
                                
                                  

                                    
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