SQL XQuery для разделения детей / потомков - PullRequest
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SQL XQuery для разделения детей / потомков

0 голосов
/ 18 сентября 2018

Мне нужно вернуть 2 строки данных из приведенного ниже XML. 

| FaultText                 | Question1             | Question2               | Question3 | SOR    |
|---------------------------|-----------------------|-------------------------|-----------|--------|
| Heating: radiator leaking | Q1 = Rad leaking? Yes | Q2 = Where? Bedroom     | Null      | HEA033 |
| Heating: radiator leaking | Q1 = Rad leaking? Yes | Q2 = Where? Living room | Null      | HEA033 |

XML 

<KeyfaxData>
<Fault name="Fault1" type="RD">
    <FaultText>Heating: radiator leaking</FaultText>
    <TenantID>123456</TenantID>
    <TenantText>Mrs Bean</TenantText>
    <UserCode>MBEAN</UserCode>
    <ScriptPath>
        <Question>Q1 = Rad leaking? Yes</Question>
        <Question>Q2 = Where? Bedroom</Question>
    </ScriptPath>
    <Repair name="Repair1">
        <RepairCodeEx>HEA033</RepairCodeEx>
        <RepairCodeDesc>HEATING SYSTEM:REPAIR LEAK</RepairCodeDesc>
    </Repair>
</Fault>
<Fault name="Fault2" type="RD">
    <FaultText>Heating: radiator leaking</FaultText>
    <TenantID>123457</TenantID>
    <TenantText>Mrs Bean</TenantText>
    <UserCode>MBEAN1</UserCode>
    <ScriptPath>
        <Question>Q1 = Rad leaking? Yes</Question>
        <Question>Q2 = Where? Living room</Question>
    </ScriptPath>
    <Repair name="Repair1">
        <RepairCodeEx>HEA033</RepairCodeEx>
        <RepairCodeDesc>HEATING SYSTEM:REPAIR LEAK</RepairCodeDesc>
    </Repair>
</Fault>
<GUID>AA9F632B-8F68-4D30-A954B40517C01947</GUID>
<Status>1</Status>
</KeyfaxData>

SQL, использованный до поиска имени ошибки, приведен ниже.Результаты этого показывают вопрос 1 ошибки 2 внутри вопроса 3. 

SELECT
exportxml.value('(/KeyfaxData/Fault/FaultText)[1]','nvarchar(500)') as FaultText,
exportxml.value('(/KeyfaxData/Fault/ScriptPath/Question)[1]','nvarchar(500)') as Question1,
exportxml.value('(/KeyfaxData/Fault/ScriptPath/Question)[2]','nvarchar(500)') as Question2,
exportxml.value('(/KeyfaxData/Fault/ScriptPath/Question)[3]','nvarchar(500)') as Question3,
exportxml.value('(/KeyfaxData/Fault/Repair/RepairCode)[1]','nvarchar(500)') as SOR,
FROM KeyFaxHistory

Любая помощь будет высоко ценится!Я раньше не делал XQuery.

1 Ответ

0 голосов
/ 19 сентября 2018

Вы можете попробовать это так: 

DECLARE @mockupTable TABLE(exportxml XML);
INSERT INTO @mockupTable(exportxml) VALUES
('<KeyfaxData>
  <Fault name="Fault1" type="RD">
    <FaultText>Heating: radiator leaking</FaultText>
    <TenantID>123456</TenantID>
    <TenantText>Mrs Bean</TenantText>
    <UserCode>MBEAN</UserCode>
    <ScriptPath>
      <Question>Q1 = Rad leaking? Yes</Question>
      <Question>Q2 = Where? Bedroom</Question>
    </ScriptPath>
    <Repair name="Repair1">
      <RepairCodeEx>HEA033</RepairCodeEx>
      <RepairCodeDesc>HEATING SYSTEM:REPAIR LEAK</RepairCodeDesc>
    </Repair>
  </Fault>
  <Fault name="Fault2" type="RD">
    <FaultText>Heating: radiator leaking</FaultText>
    <TenantID>123457</TenantID>
    <TenantText>Mrs Bean</TenantText>
    <UserCode>MBEAN1</UserCode>
    <ScriptPath>
      <Question>Q1 = Rad leaking? Yes</Question>
      <Question>Q2 = Where? Living room</Question>
    </ScriptPath>
    <Repair name="Repair1">
      <RepairCodeEx>HEA033</RepairCodeEx>
      <RepairCodeDesc>HEATING SYSTEM:REPAIR LEAK</RepairCodeDesc>
    </Repair>
  </Fault>
  <GUID>AA9F632B-8F68-4D30-A954B40517C01947</GUID>
  <Status>1</Status>
</KeyfaxData>');

- В запросе будет использоваться .nodes(), чтобы получить несколько строк для повторяющихся элементов и прочитать содержимое, используя XPath:

* 1007.*

Результат 

+-------------------------------------+---------------------------+-----------------------+-------------------------+-----------+--------+
| GUID_value                          | FaultText                 | Question1             | Question2               | Question3 | SOR    |
+-------------------------------------+---------------------------+-----------------------+-------------------------+-----------+--------+
| AA9F632B-8F68-4D30-A954B40517C01947 | Heating: radiator leaking | Q1 = Rad leaking? Yes | Q2 = Where? Bedroom     | NULL      | HEA033 |
+-------------------------------------+---------------------------+-----------------------+-------------------------+-----------+--------+
| AA9F632B-8F68-4D30-A954B40517C01947 | Heating: radiator leaking | Q1 = Rad leaking? Yes | Q2 = Where? Living room | NULL      | HEA033 |
+-------------------------------------+---------------------------+-----------------------+-------------------------+-----------+--------+
...