如何交叉引用具有FirstName + LastName字段的兩個表

Question

我想匹配兩個表都具有first +姓氏字段的表。我想返回匹配每個人的第一個姓氏組合的記錄。

表1場：

id|firstname|lastname|position| 

表2場：

firstname|lastname|datehired|department|deptcode| 

Answer 1

您可以加入多個列：

SELECT t1.id, t1.firstname, t1.lastname, t1.position, 
     t2.datehired, t2.department, t2.deptcode 
FROM Table1 t1 INNER JOIN Table2 t2 
    ON t1.firstname = t2.firstname 
    AND t1.lastname = t2.lastname 

Answer 2

如何：

Select FirstName, LastName From Table1 

Intersect 

Select Firstname, LastName From Table2 

Answer 3

您需要在兩種情況下你的加入

SELECT * 
FROM Table1 
JOIN Table2 ON Table1.firstname = Table2.firstname AND Table1.lastname = Table2.lastname