[英]How to set an output parameter that is the combination of two fields, e.g., fullname=firstname+lastname?
[英]How to cross reference two tables that have FirstName + LastName fields
我想匹配兩個都有名字和姓氏字段的表。 我想返回與每個人的名字和姓氏組合匹配的記錄。
表1字段:
id|firstname|lastname|position|
表2字段:
firstname|lastname|datehired|department|deptcode|
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
怎么樣:
Select FirstName, LastName From Table1
Intersect
Select Firstname, LastName From Table2
您需要在加入時同時包含兩個條件
SELECT *
FROM Table1
JOIN Table2 ON Table1.firstname = Table2.firstname AND Table1.lastname = Table2.lastname
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