相关疑难解决方法(0)

什么区别

SELECT DISTINCT field1 
  FROM table1 cd  
  JOIN table2 
    ON     cd.Company = table2.Name 
       and table2.Id IN (2728) 

和

SELECT DISTINCT field1 
  FROM table1 cd  
  JOIN table2 
    ON cd.Company = table2.Name 
 where table2.Id IN (2728) 

两者都返回相同的结果,两者都有相同的解释输出