动态XML到SQL-sqlserver

我有一个非常复杂的XML，我只是尝试编写动态SQL查询，将数据从XML插入SQL Server数据库

下面是XML的XSD:：

<xs:element name="Department">
    <xs:complexType>
        <xs:all>
            <xs:element name="DeptID" type="xs:string" minOccurs="0" maxOccurs="1" />
            <xs:element name="DepRefNum" type="xs:string" minOccurs="0" maxOccurs="1" />
            <xs:element ref="date"/>            
            <xs:element ref="Employees" minOccurs="0" maxOccurs="1"/>
        </xs:all>
    </xs:complexType>
</xs:element>

<xs:element name="Employees">
    <xs:complexType>
        <xs:sequence>
            <xs:element ref="Employee" minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
    </xs:complexType>
</xs:element>

<xs:element name="Employee">
    <xs:complexType>
        <xs:sequence>
            <xs:element name="Name" minOccurs="0" maxOccurs="1"/>
            <xs:element name="Code" type="xs:string" minOccurs="0" maxOccurs="1"/>
            <xs:element ref="Date" minOccurs="0" maxOccurs="1"/>            
        </xs:sequence>
    </xs:complexType>
</xs:element>

<xs:element name="Date" type="TypeStringWithTypeAttribute"/>

<xs:complexType name="TypeStringWithTypeAttribute">
    <xs:simpleContent>
        <xs:extension base="xs:string">
            <xs:attribute name="type" type="xs:string"/>
        </xs:extension>
    </xs:simpleContent>
</xs:complexType>

我有两个表，我正在尝试以下面的格式获取数据，其中

Dept\u ID

来自XML，但是

EMP\u ID

是一个标识，我希望

Dept\u ID

用作外键，这不是问题，只是为了信息：

部门：

Dept_ID     Dept_Ref_Num    Create_Date_Type    Create_Date
---------------------------------------------------------------
D101                        Create              01/1/2017 12:30

Emp_ID   Dept_ID    Emp_Name    Emp_Code    Date_Type   Date
-------------------------------------------------------------------------
   1     D101       Jason       J111        DOJ         06/18/2018 14:36
   2     D101       Roy         R111        DOJ         06/18/2018 14:36

员工：

Dept_ID     Dept_Ref_Num    Create_Date_Type    Create_Date
---------------------------------------------------------------
D101                        Create              01/1/2017 12:30

Emp_ID   Dept_ID    Emp_Name    Emp_Code    Date_Type   Date
-------------------------------------------------------------------------
   1     D101       Jason       J111        DOJ         06/18/2018 14:36
   2     D101       Roy         R111        DOJ         06/18/2018 14:36

---

我面临的问题是因为它是动态xml，我不知道实时xml中会有多少员工，也就是说，因为employees下的employees是无限的。

更正了xml上的close标记

也许是这样的：

DECLARE @x XML='<Department>
   <DeptID>D101</DeptID>
   <DepRefNum></DepRefNum>
   <Date type="Create">01/1/2017 12:30</Date>
   <Employees>
         <Employee>
             <Name>Jason</Name>
             <Code>J111</Code>
             <Date type="DOJ">06/18/2018 14:36</Date>
         </Employee>

         <Employee>
              <Name>Roy</Name>
              <Code>R111</Code>
              <Date type="DOJ">06/18/2018 14:36</Date>
         </Employee>
    </Employees>
</Department>'

SELECT  n.value('DeptID[1]','varchar(10)') AS DeptID,
        n.value('DepRefNum[1]','varchar(10)') AS DepRefNum,
        n.value('Date[1]/@type','varchar(10)') AS Create_Date_Type,
        n.value('Date[1]','datetime') AS Create_Date
FROM @x.nodes('/Department') R(n)

SELECT  n.value('../../DeptID[1]','varchar(10)') AS DeptID,
        n.value('Name[1]','varchar(10)') AS Emp_Name,
        n.value('Code[1]','varchar(10)') AS Emp_Code,
        n.value('Date[1]/@type','varchar(10)') AS Date_Type,
        n.value('Date[1]','datetime') AS Date
FROM @x.nodes('/Department/Employees/Employee') R(n)

示例

Declare @XML xml = '
<Department>
   <DeptID>D101</DeptID>
   <DepRefNum></DepRefNum>
   <Date type="Create">01/1/2017 12:30</Date>
   <Employees>
         <Employee>
             <Name>Jason</Name>
             <Code>J111</Code>
             <Date type="DOJ">06/18/2018 14:36</Date>
         </Employee>
         <Employee>
              <Name>Roy</Name>
              <Code>R111</Code>
              <Date type="DOJ">06/18/2018 14:36</Date>
         </Employee>
    </Employees>   
</Department>
'

Select DeptID    = lvl1.n.value('DeptID[1]','varchar(150)') 
      ,DepRefNum = lvl1.n.value('DepRefNum[1]','varchar(150)') 
      ,Create_Date_Type = lvl1.n.value('Date[1]/@type','varchar(150)') 
      ,Create_Date = lvl1.n.value('Date[1]','varchar(150)') 
 From  @XML.nodes('*') lvl1(n)

Select DeptID    = lvl1.n.value('DeptID[1]','varchar(150)') 
      ,Emp_Name  = lvl2.n.value('Name[1]','varchar(150)') 
      ,Emp_Code  = lvl2.n.value('Code[1]','varchar(150)') 
      ,Date_Type = lvl2.n.value('Date[1]/@type','varchar(150)') 
      ,Date      = lvl2.n.value('Date[1]','varchar(150)') 
 From  @XML.nodes('*') lvl1(n)
 Cross Apply lvl1.n.nodes('Employees/*') lvl2(n)

返回

DeptID      DepRefNum   Create_Date_Type    Create_Date
D101                    Create              01/1/2017 12:30

及

---

在这里提取数据不需要动态SQL。您只需查询适当的节点并访问父节点，如下所示：

DECLARE @x XML='<Department>
   <DeptID>D101</DeptID>
   <DepRefNum></DepRefNum>
   <Date type="Create">01/1/2017 12:30</Date>
   <Employees>
         <Employee>
             <Name>Jason</Name>
             <Code>J111</Code>
             <Date type="DOJ">06/18/2018 14:36</Date>
         </Employee>

         <Employee>
              <Name>Roy</Name>
              <Code>R111</Code>
              <Date type="DOJ">06/18/2018 14:36</Date>
         </Employee>
    </Employees>
</Department>'

SELECT  n.value('DeptID[1]','varchar(10)') AS DeptID,
        n.value('DepRefNum[1]','varchar(10)') AS DepRefNum,
        n.value('Date[1]/@type','varchar(10)') AS Create_Date_Type,
        n.value('Date[1]','datetime') AS Create_Date
FROM @x.nodes('/Department') R(n)

SELECT  n.value('../../DeptID[1]','varchar(10)') AS DeptID,
        n.value('Name[1]','varchar(10)') AS Emp_Name,
        n.value('Code[1]','varchar(10)') AS Emp_Code,
        n.value('Date[1]/@type','varchar(10)') AS Date_Type,
        n.value('Date[1]','datetime') AS Date
FROM @x.nodes('/Department/Employees/Employee') R(n)

---

我只希望OP的xml不在他们帖子中的状态，否则他们会将其存储为

varchar

，并将其转换为

xml

@Larnu，希望你是对的。：）“在此期间，我将假定复制/粘贴错误。@John Cappelletti.”。。非常感谢：）