MS Access 查询用列 header 文本填充单元格，其中该列的值 = "Yes"

Question

我有一个 table 看起来像这样：

Patient Name	Injury A	Injury B
Bob	Yes	Yes
Mary	Yes	No

我想编写一个查询来填充一个列，连接伤害 header 文本，用逗号分隔，其中一个伤害列中有一个“是”，如下所示.

Patient Name	Injury A	Injury B	All Injuries
Bob	Yes	Yes	Injury A, Injury B
Mary	Yes	No	Injury A

感谢任何帮助。

Answer 1

使用 IIf() 表达式。

SELECT Table1.PatientName, Table1.InjuryA, Table1.InjuryB, 
IIf([InjuryA]="Yes","InjuryA",Null) & IIf([InjuryA]="Yes" And [InjuryB]="Yes",", ",Null) & IIf([InjuryB]="Yes","InjuryB",Null) AS AllInjuries
FROM Table1;

MS Access 查询用列 header 文本填充单元格，其中该列的值 = "Yes"

MS Acces query to populate cell with column header text where that column's value = "Yes"

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