如何在 SQL Server 2019 中生成 XML 站点地图？

Question

我想从 SQL 服务器中生成站点地图并使用以下产品 table 将其保存到我的系统驱动器：

示例数据

loc	image	caption	changefreq	priority
https://example.com/product1	https://example.com/asset/img1.jpg	title1	10	0.1
https://example.com/product2	https://example.com/asset/img2.jpg	title2	5	0

我尝试使用 FOR XML PATH 查询，但没有给我正确的结果：

DECLARE @xml XML = (SELECT 
                        (SELECT 
                                '' AS "data()" 
                         FOR XML PATH ('loc'), TYPE),
                         (SELECT 
                                '' AS "data()" 
                         FOR XML PATH ('changefreq'), TYPE),
                         (SELECT 
                                '' AS "data()" 
                         FOR XML PATH ('priority'), TYPE),
                         
                                '' AS 'Name!1!ELEMENT' 
                    FROM dbo.product o 
                    FOR XML PATH ('url'), ROOT('dummyTag'), TYPE)

-- Magic happens here!       

    SELECT 1 AS Tag
          ,0 AS Parent
          ,@xml AS [urlset!1!!xmltext]
          ,'http://www.sitemaps.org/schemas/sitemap/0.9' AS [urlset!1!xmlns]
          ,'http://www.sitemaps.org/schemas/sitemap/0.9' AS [urlset!1!xmlns:image]
    FOR XML EXPLICIT

模板xml:

<urlset xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc></loc>
    <changefreq></changefreq>
    <image:image>
      <image:loc></image:loc>
      <image:caption></image:caption>
    </image:image>
  </url>
</urlset>

我想要的是这样的结果：

<?xml version="1.0" encoding="UTF-8"?>
<urlset
    xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
    xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
    <url>
        <loc>https://www.example.com/product/dkp-4658551/%D9%85%D8%A7%D9%86%D8%AA%D9%88-%D8%B2%D9%86%D8%A7%D9%86%D9%87-27-%D9%85%D8%AF%D9%84-%DA%AF%D9%84-%D9%88-%D9%BE%D9%86%D8%AC%D8%B1%D9%87-%DA%A9%D8%AF-v78-%D8%B1%D9%86%DA%AF-%D8%B7%D9%88%D8%B3%DB%8C</loc>
        <changefreq>weekly</changefreq>
        <priority>0.8</priority>
        <image:image>
            <image:loc>https://example.com/mysite-products/3d1201f33f4e6dd6114ee6ec55be20fb5581f382_1615206830.jpg?x-oss-process=image/resize,m_lfit,h_350,w_350/quality,q_60</image:loc>
            <image:caption>مانتو زنانه 27 مدل گل و پنجره کد V78 رنگ طوسی</image:caption>
        </image:image>
    </url>
</urlset>

Answer 1

由于没有提供DDL和示例数据填充，所以我冒昧创建了。

通过使用 XQuery 及其 FLWOR 表达式，可以轻松创建站点地图 XML。

SQL

-- DDL and sample data population, start
DECLARE @tbl TABLE 
(
    ID INT IDENTITY PRIMARY KEY, 
    loc VARCHAR(2048), 
    changefreq VARCHAR(10),
    priority DECIMAL(2,1),
    image VARCHAR(2048),
    caption NVARCHAR(255)
);
INSERT INTO @tbl (loc, changefreq, priority, image, caption) VALUES
('https://example.com/product1', 'hourly', 0.5, 'https://example.com/asset/img1.jpg', N'caption1'),
('https://example.com/product2', 'daily', 0.2, 'https://example.com/asset/img2.jpg', N'caption2');
-- DDL and sample data population, end

;WITH XMLNAMESPACES(DEFAULT 'http://www.sitemaps.org/schemas/sitemap/0.9'
    , 'http://www.google.com/schemas/sitemap-image/1.1' AS [image])
SELECT (
    SELECT * 
    FROM @tbl
    FOR XML PATH('r'), TYPE, ROOT('root')
).query('<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9"
        xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
{
    for $x in /root/r
    return <url>
        <loc>{data($x/loc)}</loc>
        <changefreq>{data($x/changefreq)}</changefreq>
        <priority>{data($x/priority)}</priority>
        <image:image>
            <image:loc>{data($x/image)}</image:loc>
            <image:caption>{data($x/caption)}</image:caption>
        </image:image>
    </url>
}
</urlset>');

输出

<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1">
  <url>
    <loc>https://example.com/product1</loc>
    <changefreq>hourly</changefreq>
    <priority>0.5</priority>
    <image:image>
      <image:loc>https://example.com/asset/img1.jpg</image:loc>
      <image:caption>caption1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://example.com/product2</loc>
    <changefreq>daily</changefreq>
    <priority>0.2</priority>
    <image:image>
      <image:loc>https://example.com/asset/img2.jpg</image:loc>
      <image:caption>caption2</image:caption>
    </image:image>
  </url>
</urlset>

Answer 2

以下也是 returns 您所需要的 - 对我来说似乎更简单一些。另外，如果你想添加版本和编码，我相信你能做到的唯一方法就是转换为字符串。

DECLARE @Xml XML = null, @XMLStr NVARCHAR(MAX) = '<?xml version="1.0" encoding="UTF-8"?>';

WITH XMLNAMESPACES (DEFAULT 'http://www.sitemaps.org/schemas/sitemap/0.9'
    , 'http://www.google.com/schemas/sitemap-image/1.1' AS image)  
SELECT @Xml = (SELECT loc, changefreq, [priority], [image] as [image:image/image:loc]
    , [caption] as [image:image/image:caption]
FROM (
  VALUES ('https://example.com/product1','https://example.com/asset/img1.jpg','title1', 10, 0.1)
      , ('https://example.com/product2','https://example.com/asset/img2.jpg','title1', 20, 0.2)
) P (loc, [image], caption, changefreq, [priority])
FOR XML PATH ('url'), ROOT('urlset'));

SELECT @Xml;

-- Convert to a string and add the `version` + `encoding` tag.
SELECT @XMLStr + CAST(@XML AS NVARCHAR(MAX));

Returns:

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://example.com/product1</loc>
    <changefreq>10</changefreq>
    <priority>0.1</priority>
    <image:image>
      <image:loc>https://example.com/asset/img1.jpg</image:loc>
      <image:caption>title1</image:caption>
    </image:image>
  </url>
  <url>
    <loc>https://example.com/product2</loc>
    <changefreq>20</changefreq>
    <priority>0.2</priority>
    <image:image>
      <image:loc>https://example.com/asset/img2.jpg</image:loc>
      <image:caption>title1</image:caption>
    </image:image>
  </url>
</urlset>

注意：您没有提供更改频率与代表它的词之间的映射。

如何在 SQL Server 2019 中生成 XML 站点地图？

How generate XML sitemap in SQL Server 2019?

sql

tsql

sitemap

sql-server

xquery