如何更新兩個連接表？

Question

我打算在SqlServer中編寫一個可以更新連接表的程序，在我的情況下，我有兩個表（HowzeEducation & HowzeDegree），所以我寫了下面的查詢，但它有錯誤，並且無法正常工作。這裏是我的代碼：

declare 
@HowzeEducationId int, 
@DegreeId int, 
@FieldName nvarchar(50), 
@FinishLevelDate date, 
@Average decimal(4,2), 
@SchoolName nvarchar(50), 
@StudyCityDescribtion nvarchar(100), 
@ThesisTitle nvarchar(200), 
@Describtion nvarchar(600) 


update (
    select he.FieldName, 
    he.Average, 
    he.Describtion, 
    he.FinishLevelDate, 
    he.SchoolName, 
    he.StudyCityDescribtion, 
    he.ThesisTitle, 
    hd.DegreeId 
from HowzeEducation he inner join HowzeDegree hd on 
    he.HowzeEducationId=hd.HowzeEducationId 
    ) 
set he.FieldName=@FieldName , 
he.Average=@Average, 
he.Describtion=@Describtion, 
he.FinishLevelDate=@FinishLevelDate, 
he.SchoolName=@SchoolName, 
he.StudyCityDescribtion=@StudyCityDescribtion, 
he.ThesisTitle=@ThesisTitle, 
hd.DegreeId=@DegreeId 

where he.HowzeEducationId=@HowzeEducationId 

如何解決這個問題？

Answer 1

您不能更新使用一個更新語句包含兩個表，你必須使用兩個更新如下：

declare 
@HowzeEducationId int, 
@DegreeId int, 
@FieldName nvarchar(50), 
@FinishLevelDate date, 
@Average decimal(4,2), 
@SchoolName nvarchar(50), 
@StudyCityDescribtion nvarchar(100), 
@ThesisTitle nvarchar(200), 
@Describtion nvarchar(600) 


update HowzeEducation 
set Average=@Average, 
    Describtion=@Describtion, 
    FinishLevelDate=@FinishLevelDate, 
    SchoolName=@SchoolName, 
    StudyCityDescribtion=@StudyCityDescribtion, 
    ThesisTitle=@ThesisTitle, 
    FieldName=@FieldName 
where HowzeEducationId=@HowzeEducationId 

update HowzeDegree 
set DegreeId=@DegreeId 
where HowzeEducationId=@HowzeEducationId 

Answer 2

您可以通過視圖修改多個表，你可以試試：

create view HowzeView as 
select he.FieldName, 
    he.Average, 
    he.Describtion, 
    he.FinishLevelDate, 
    he.SchoolName, 
    he.StudyCityDescribtion, 
    he.ThesisTitle, 
    hd.DegreeId 
from HowzeEducation he inner join HowzeDegree hd on 
    he.HowzeEducationId=hd.HowzeEducationId 

update HowzeView 
set FieldName=@FieldName, 
Average=@Average, 
Describtion=@Describtion, 
FinishLevelDate=@FinishLevelDate, 
SchoolName=@SchoolName, 
StudyCityDescribtion=@StudyCityDescribtion, 
ThesisTitle=@ThesisTitle, 
DegreeId=@DegreeId