SQL Server ->> XML方法

1. 得到XML类型中某个节点下子节点的数量

DECLARE @xml xml
SET @xml = ‘
<Parameters>
    <Parameter name = "param_executionid" type="Int64" />
    <Parameter name = "param_loadfromsourceSP" type="String" />
    <Parameter name = "param_loadtoStageTableSP" type="String" />
    <Parameter name = "param_objectname" type="String" />
</Parameters>‘;

SELECT @xml.value(‘count(/Parameters/Parameter)‘, ‘int‘)

2. 把XML转成Table

DECLARE @xml xml
SET @xml = ‘
<Parameters>
    <Parameter name = "param_executionid" type="Int64" />
    <Parameter name = "param_loadfromsourceSP" type="String" />
    <Parameter name = "param_loadtoStageTableSP" type="String" />
    <Parameter name = "param_objectname" type="String" />
</Parameters>‘;

SELECT T.c.query(‘.‘).value(‘(//@name)[1]‘, ‘varchar(50)‘) AS A,
    T.c.query(‘.‘).value(‘(//@type)[1]‘, ‘varchar(50)‘) AS B
FROM @xml.nodes(‘/Parameters/Parameter‘) T(c)