Sql for xml：如何避免将特定字段作为属性输出？答案

【问题标题】：Sql for xml: how to avoid a specific field is output as attribute?Sql for xml：如何避免将特定字段作为属性输出？
【发布时间】：2017-06-12 03:58:28
【问题描述】：

这个问题的出发点是Control on XML elements nesting using FOR XML

我希望输出改变

<security AccessLevel="5" />

到

<security>5<security/>

基本上不是将AccessLevel 显示为属性，我希望它的值成为元素security 的值。如何达到这样的效果。为了清楚起见，我在此处复制链接帖子中的示例：

DECLARE @Employees table(  
    EmpID int NOT NULL,  
    Name nvarchar(50),  
    Surname nvarchar(50),  
    DateOfBirth date,
    DepartmentID int,
    AccessLevel int);
insert into  @Employees    values ('1', 'John','Doe','1980-01-31',100,5)
insert into  @Employees    values ('2', 'Mary','Rose','1971-02-27',102,3)
insert into  @Employees    values ('3', 'Luke','Perry','1995-12-01',104,1)

select
  employee.Name,
  employee.Surname,
  employee.DateOfBirth,
  department.DepartmentID, 
  security.AccessLevel  -- THIS IS THE INVOLVED FIELD
from @Employees employee
join @Employees department on department.DepartmentID = employee.DepartmentID
join @Employees security on security.AccessLevel = employee.AccessLevel
for xml auto

【问题讨论】：

标签： sql-server sql-server-2008-r2 for-xml

【解决方案1】：

我会在别名中使用@ 来生成xml 中的attributes。要获取accesslevel 作为元素，请不要将@ 添加到别名

像这样的

SELECT NAME         AS [@Name],
       Surname      AS [@Surname],
       DateOfBirth  AS [@DateOfBirth],
       DepartmentID AS [department/@DepartmentID],
       AccessLevel  AS [department/security]
FROM   @Employees
FOR xml path('employee')

结果：

<employee Name="John" Surname="Doe" DateOfBirth="1980-01-31">
  <department DepartmentID="100">
    <security>5</security>
  </department>
</employee>
<employee Name="Mary" Surname="Rose" DateOfBirth="1971-02-27">
  <department DepartmentID="102">
    <security>3</security>
  </department>
</employee>
<employee Name="Luke" Surname="Perry" DateOfBirth="1995-12-01">
  <department DepartmentID="104">
    <security>1</security>
  </department>
</employee>

【讨论】：