When using SELECT can you modify the value of a returned field based on other fields?

Question

When using MySQL SELECT can you change the value of a returned field based on other fields?

For example, if I have this select:

SELECT city,state,cou         


        

Answer 1

Why don't you just use a WHERE clause?

For example:

SELECT city, state, country FROM  WHERE (city <> "" OR state <> "");
N.B.: You'll need to replace the '<> ""' above with 'IS NOT NULL' if these are actually nulled rather than simply empty.

                                                        

              
                
                0
              
                   
                
               讨论(0)
              
                                                  
              
              

                          
             
       
          
              
                                       

     查看其它4个回答


            

                    



               
            

    发布评论:
    

         
                        
    
    
提交评论 
  
  

                    
                    

                    

                        

                        
                         加载中...
                        
                    
                

          

            
            

              
              

            
    


                                 
              
            
                          
    

        
         

                验证码
                

                  
                
                

                   看不清?
                
              
                                  

                    
   
                 
             
              
提交回复
            
          
        

          
 
     
 

        
热议问题