Tsql 合并多个更新查询

如何组合这两个查询（使用交叉表和条件进行更新），以减少在宏中使用多个查询的需要

问题1

UPDATE [Master Output Table], [Input table] SET [Master Output Table].[Area Change Ar Transfer From] = [Input table]![Amount 1723]
WHERE ((([Input table]![Transaction Type 1723])="Area Change Ar Transfer From") AND (([Master Output Table]![Transaction Type])="Amount 1723"));

问题2

UPDATE [Master Output Table], [Input table] SET [Master Output Table].[Area Change Ar Transfer From] = [Input table]![Tax Amount 1723]
WHERE ((([Input table]![Transaction Type 1723])="Area Change Ar Transfer From") AND (([Master Output Table]![Transaction Type])="Tax Amount 1723"));

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这应该对你有用

UPDATE [Master Output Table], [Input table]
SET 
[Master Output Table].[Area Change Ar Transfer From] = 
    case when [Master Output Table]![Transaction Type]="Amount 1723" then
    [Input table]![Amount 1723]
    else
    [Input table]![Tax Amount 1723]
end
WHERE 
[Input table]![Transaction Type 1723]="Area Change Ar Transfer From" 
AND 
[Master Output Table]![Transaction Type] in ("Amount 1723","Tax Amount 1723");

我得到一个语法错误（缺少运算符），它似乎与以“case-when”开头的部分有关