1

我正在尝试读取 XML，除了名为的属性之外，它总体上运行良好：

<custom-attribute attribute-id="loyaltyNumber">1234567890</custom-attribute>

我试图获得值“1234567890”

这是测试代码：

DECLARE @XML XML = '<customers>
<customer customer-no="00000001">
        <credentials>
            <login>test@email.com</login>
        </credentials>
        <profile>
            <preferred-locale>fr_BE</preferred-locale>
            <custom-attributes>
                <custom-attribute attribute-id="ServiceId">1</custom-attribute>
                <custom-attribute attribute-id="loyaltyNumber">1234567890</custom-attribute>
            </custom-attributes>
        </profile>
        <note/>
    </customer>
    <customer customer-no="00000002">
        <credentials>
            <login>test2@email.com</login>
        </credentials>
        <profile>
            <preferred-locale>fr_FR</preferred-locale>
            <custom-attributes>
                <custom-attribute attribute-id="loyaltyNumber">1234567890</custom-attribute>
            </custom-attributes>
        </profile>
        <note/>
    </customer>
</customers>'
 
SELECT
    CustomerNo = Events.value('@customer-no', 'int'),
    --EventType = Events.value('@Type', 'varchar(20)'),
    CustomerLogin =Events.value('(credentials/login)[1]', 'varchar(60)'),
    CustomerLocal =Events.value('(profile/preferred-locale)[1]', 'varchar(60)'),
    EventKind =Events.value('(profile/custom-attributes/custom-attribute)[2]', 'varchar(60)')
FROM
    @XML.nodes('/customers/customer') AS XTbl(Events)

目前的结果是：

客户编号 客户登录 客户本地 事件种类
1 test@email.com fr_BE 1234567890
2 test2@email.com fr_FR 空值

这是合乎逻辑的，因为自定义属性是可选的，因此您无法使用索引访问它们。所以我正在寻找一种按名称访问它们的方法：attribute-id="loyaltyNumber"

谢谢，

4

2 回答 2

1

..过滤具有attribute-id =“loyaltyNumber”的属性的路径</p> 

EventKind =Events.value('(profile/custom-attributes/custom-attribute[@attribute-id="loyaltyNumber"])[1]', 'varchar(60)')
于 2021-05-12T09:11:09.137 回答
1

您只需将自定义属性的属性 ID 添加到您的查询中：

DECLARE @XML XML = '<customers>
<customer customer-no="00000001">
        <credentials>
            <login>test@email.com</login>
        </credentials>
        <profile>
            <preferred-locale>fr_BE</preferred-locale>
            <custom-attributes>
                <custom-attribute attribute-id="ServiceId">1</custom-attribute>
                <custom-attribute attribute-id="loyaltyNumber">1234567890</custom-attribute>
            </custom-attributes>
        </profile>
        <note/>
    </customer>
    <customer customer-no="00000002">
        <credentials>
            <login>test2@email.com</login>
        </credentials>
        <profile>
            <preferred-locale>fr_FR</preferred-locale>
            <custom-attributes>
                <custom-attribute attribute-id="loyaltyNumber">1234567777</custom-attribute>
            </custom-attributes>
        </profile>
        <note/>
    </customer>
</customers>'
 
SELECT
    CustomerNo = Events.value('@customer-no', 'int'),
    --EventType = Events.value('@Type', 'varchar(20)'),
    CustomerLogin =Events.value('(credentials/login)[1]', 'varchar(60)'),
    CustomerLocal =Events.value('(profile/preferred-locale)[1]', 'varchar(60)'),
    EventKind =Events.value('(profile/custom-attributes/custom-attribute[@attribute-id = "loyaltyNumber"])[1]', 'varchar(60)')
FROM
 @XML.nodes('/customers/customer') AS XTbl(Events)
于 2021-05-12T09:16:31.577 回答