Question

这是我的查询：

   select EmployeeName, EmployeeSalary from Employee2
   for xml path('EmployeeDetails')

返回

<EmployeeDetails>
  <EmployeeName>xxxxx</EmployeeName>
  <EmployeeSalary>5000.00000</EmployeeSalary>
</EmployeeDetails>

我怎样才能得到输出

<EmployeeDetails>
   <EmployeeName = xxxxx />
   <EmployeeSalary = 5000.00000/>
</EmployeeDetails>

Answer 1

你不能，那是无效的XML

如果你想要像

这样的东西

<EmployeeDetails Name="xxxxx" Salary="5000.00000" />

然后就可以做到，但这没什么区别。 XML是XML。诀窍是 AUTO 关键字

select EmployeeName, EmployeeSalary from Employee2
for xml AUTO

如果您想要精确控制XML布局，请使用这种垃圾

Select
    (Select EmployeeName, EmployeeSalary From Employee2 For XML Auto, Type)
    .query(
        '<Slaves>{
            for $employee in /Employee2
            return 
                <Slave Name="{data($employee/@EmployeeName)}" Salary="{data($employee/@EmployeeSalary)}"/>
        }</Slaves>'
    )

SQL Server实际上不是XML序列化的地方。你确定你不应该在另一个组件中这样做吗？通常是您的公共接口（UI，API等）

Answer 2

你应该看看For Xml Explicit。例如，使用以下模式：

Create Table #Employees
(
    Id int not null identity(1,1) primary key clustered
    , EmployeeName nvarchar(100) not null
    , EmployeeSalary decimal(18,4) not null
)

Insert #Employees Values( 'ABC', 12345 )
Insert #Employees Values( 'DEF', 67890 )
Insert #Employees Values( 'GHI', 11223 )

以下查询：

Select 1 As Tag
    , Null As Parent
    , Id As [EmployeeDetails!1!Id!Hide]
    , Null As [EmployeeName!2!Name]
    , Null As [EmployeeSalary!3!Salary]
From #Employees
Union All
Select 2 As Tag
    , 1 As Parent
    , Id
    , EmployeeName
    , Null
From #Employees
Union All
Select 3 As Tag
    , 1 As Parent
    , Id
    , Null
    , EmployeeSalary
From #Employees As EmployeeDetails
Order By [EmployeeDetails!1!Id!Hide]
For Xml Explicit

我得到以下内容：

<EmployeeDetails>
    <EmployeeName Name="ABC"/>
    <EmployeeSalary Salary="12345.0000"/>
</EmployeeDetails>
<EmployeeDetails>
    <EmployeeName Name="DEF"/>
    <EmployeeSalary Salary="67890.0000"/>
</EmployeeDetails>
<EmployeeDetails>
    <EmployeeName Name="GHI"/>
    <EmployeeSalary Salary="11223.0000"/>
</EmployeeDetails>

Answer 3

从Employee2中选择EmployeeName，EmployeeSalary FOR XML AUTO，ROOT（'EmployeeDetails'）

从SQL for XML返回的格式XML

3 个答案: