sql - 从 xml 文件向 SQL Server 数据库添加行

Question

我正忙于将一个网站从基于 xml 的文件转换为 SQL Server 2012 express 数据库，现在我已经设法从 xml 中获取大部分标签以轻松导入到 SQL Server 中

我现在的问题在于这些 xml 的特定部分

这是我遇到问题的部分

<?xml version="1.0" encoding="utf-16"?>
<License xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

<Reference>00b2d4cf-699c-4427-bcf0-a0ca456654c2</Reference>
 <MacAddresses>
  <string>00:0D:87:FE:9A:21</string>
  <string>00:20:ED:14:47:64</string>
  <string>00:13:D3:11:7C:D2</string>
  <string>00:13:D3:11:7C:D8</string>
  <string>00:19:D1:04:12:98</string>
  <string>00:19:66:C0:7F:AF</string>
 </MacAddresses>
</License>

我有每个许可证的引用以及分配给该许可证的 MAC 地址。
现在我希望它按如下方式将其导入到 sql 中:

Reference                               MACAddress
---------                               ----------
00b2d4cf-699c-4427-bcf0-a0ca456654c2    00:0D:87:FE:9A:21
00b2d4cf-699c-4427-bcf0-a0ca456654c2    00:20:ED:14:47:64
00b2d4cf-699c-4427-bcf0-a0ca456654c2    00:13:D3:11:7C:D2
00b2d4cf-699c-4427-bcf0-a0ca456654c2    00:13:D3:11:7C:D8
00b2d4cf-699c-4427-bcf0-a0ca456654c2    00:19:D1:04:12:98
00b2d4cf-699c-4427-bcf0-a0ca456654c2    00:19:D1:04:12:98
00b2d4cf-699c-4427-bcf0-a0ca456654c2    00:19:66:C0:7F:AF

我会手动完成，但我有 700 多个导入许可证，手动完成会花费太长时间。

帮助将不胜感激

Answer 1

如果您使用的是 SQL Server 2005 或更新版本，您可以使用 native XQuery 支持从 XML 中提取您想要的数据:

DECLARE @input XML = '<License xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">

<Reference>00b2d4cf-699c-4427-bcf0-a0ca456654c2</Reference>
 <MacAddresses>
  <string>00:0D:87:FE:9A:21</string>
  <string>00:20:ED:14:47:64</string>
  <string>00:13:D3:11:7C:D2</string>
  <string>00:13:D3:11:7C:D8</string>
  <string>00:19:D1:04:12:98</string>
  <string>00:19:66:C0:7F:AF</string>
 </MacAddresses>
</License>'

SELECT
    Reference = License.value('(Reference)[1]', 'varchar(50)'),
    MacAddress = MacAddr.value('.', 'varchar(50)')
FROM
    @input.nodes('License') AS XTbl1(License)
CROSS APPLY
    License.nodes('MacAddresses/string') AS XTbl2(MacAddr)

给出输出:

Reference                              MacAddress
00b2d4cf-699c-4427-bcf0-a0ca456654c2   00:0D:87:FE:9A:21
00b2d4cf-699c-4427-bcf0-a0ca456654c2   00:20:ED:14:47:64
00b2d4cf-699c-4427-bcf0-a0ca456654c2   00:13:D3:11:7C:D2
00b2d4cf-699c-4427-bcf0-a0ca456654c2   00:13:D3:11:7C:D8
00b2d4cf-699c-4427-bcf0-a0ca456654c2   00:19:D1:04:12:98
00b2d4cf-699c-4427-bcf0-a0ca456654c2   00:19:66:C0:7F:AF

当然，您也可以在 SELECT 之前使用 INSERT INTO dbo.YourTable(Reference, MacAddress) .... 自动将此数据插入到表格