example i have:
                  
                  
                  
                  
                  
                  ORDER_TR - «somekey»
                  
                  
                  ORDER_LM - «somekey»
                  
                  
                  
                  
                  
                  I want to make ORDER_TR and ORDER_LM both unique. If there is at least one column data is diffrent, it will not be unique
                  
                  
                
Are the columns in same table?
 Kamronbek Osimjonov
                          
                        
                      
                    
                    
                    
                    
                      Автор вопроса
                      
                      
                        
                          Kamronbek Osimjonov
                          
                        
                      
                    
                    
                    
                    
                      Автор вопроса
                    
                    
                  You can use composed primary key
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