{"id":305865,"date":"2020-06-24T15:01:04","date_gmt":"2020-06-24T15:01:04","guid":{"rendered":"http:\/\/savepearlharbor.com\/?p=305865"},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T21:00:00","slug":"","status":"publish","type":"post","link":"https:\/\/savepearlharbor.com\/?p=305865","title":{"rendered":"T-SQL. \u0424\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 XML \u0441\u043e \u0441\u043f\u0438\u0441\u043a\u043e\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439"},"content":{"rendered":"\n<div class=\"post__text post__text-html post__text_v1\" id=\"post-content-body\" data-io-article-url=\"https:\/\/habr.com\/ru\/post\/506942\/\"><img decoding=\"async\" src=\"https:\/\/habrastorage.org\/webt\/5r\/_9\/k2\/5r_9k2jiwhyxazbdvsad4tn2ahw.jpeg\"><\/p>\n<h3>\u041d\u0435\u0431\u043e\u043b\u044c\u0448\u0430\u044f \u0437\u0430\u043c\u0435\u0442\u043a\u0430 \u043f\u043e \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e XML<\/h3>\n<p>  <\/p>\n<h3>FOR XML PATH<\/h3>\n<p>  \u0414\u043b\u044f \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b XML-\u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430 \u0441\u043e \u0441\u043f\u0438\u0441\u043a\u043e\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0440\u0435\u0436\u0438\u043c\u043e\u043c PATH \u0434\u043b\u044f FOR XML \u0432 T-SQL.<\/p>\n<pre><code class=\"xml\">&lt;root&gt;     &lt;level1&gt;         &lt;level2&gt;&lt;\/level2&gt;         &lt;values&gt;             &lt;value&gt;&lt;\/value&gt;             &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;             &lt;value&gt;&lt;\/value&gt;             &lt;value&gt;&lt;\/value&gt;         &lt;\/values&gt;      &lt;\/level1&gt;      &lt;level1&gt;          &lt;level2&gt;&lt;\/level2&gt;          &lt;values&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;          &lt;\/values&gt;      &lt;\/level1&gt; &lt;\/root&gt; <\/code><\/pre>\n<p><a name=\"habracut\"><\/a><br \/>  \u041d\u0438\u0436\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d sql \u043a\u043e\u0434 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0442\u0435\u0441\u0442\u043e\u0432\u044b\u0445 \u0442\u0430\u0431\u043b\u0438\u0446 \u0434\u043b\u044f \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u0438 \u0437\u0430\u043f\u0440\u043e\u0441\u043e\u0432:<\/p>\n<pre><code class=\"sql\">if object_id('dbo.ProductClass', 'U') is not null     drop table dbo.ProductClass; go  create table dbo.ProductClass(     ProductClassId int identity    ,ProductClassName nvarchar(16)    ,constraint PK_ProductClass primary key(ProductClassId)); go  insert into dbo.ProductClass(ProductClassName)     values         ('Class_1')        ,('Class_2')        ,('Class_3'); go  select * from dbo.ProductClass; <\/code><\/pre>\n<p>  <\/p>\n<pre><code class=\"sql\">1\tClass_1 2\tClass_2 3\tClass_3 <\/code><\/pre>\n<p>  \u0417\u0430\u043f\u0440\u043e\u0441\u044b \u0431\u0443\u0434\u0443\u0442 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c \u0434\u0432\u0435 \u0442\u0430\u0431\u043b\u0438\u0446\u044b dbo.ProductClass \u0438 dbo.Product \u0441\u043e \u0441\u0432\u044f\u0437\u044c\u044e \u00ab\u043e\u0434\u0438\u043d \u043a\u043e \u043c\u043d\u043e\u0433\u0438\u043c\u00bb(\u0432 \u043e\u0434\u043d\u043e\u043c \u043a\u043b\u0430\u0441\u0441\u0435 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0431\u043e\u043b\u0435\u0435 \u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430).<\/p>\n<pre><code class=\"sql\">if object_id('dbo.Product', 'U') is not null     drop table dbo.Product; go  create table dbo.Product(     ProductClassId int     ,ProductId int identity     ,ProductName nvarchar(16)     ,constraint PK_Product primary key(ProductId)     ,constraint FK_ProductClass foreign key(ProductClassId)         references dbo.ProductClass(ProductClassId)); go  insert into dbo.Product(ProductClassId, ProductName)     values         (1, 'Product_1')         ,(2, 'Product_2')         ,(3, 'Product_3')         ,(1, 'Product_4')         ,(2, 'Product_5')         ,(3, 'Product_6')         ,(1, 'Product_7')         ,(3, 'Product_8')         ,(2, 'Product_9')         ,(1, 'Product_10'); go  select * from dbo.Product; <\/code><\/pre>\n<p>  <\/p>\n<pre><code class=\"sql\">1\t1\tProduct_1 2\t2\tProduct_2 3\t3\tProduct_3 1\t4\tProduct_4 2\t5\tProduct_5 3\t6\tProduct_6 1\t7\tProduct_7 3\t8\tProduct_8 2\t9\tProduct_9 1\t10\tProduct_10 <\/code><\/pre>\n<p>  \u0421\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 \u0437\u0430\u043f\u0440\u043e\u0441 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u0441\u0442\u0440\u043e\u0438\u0442\u044c XML \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442 \u0441\u043e \u0441\u043f\u0438\u0441\u043a\u043e\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 ProductName \u0442\u0430\u0431\u043b\u0438\u0446\u044b dbo.Product \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430(ProductClassName) \u0432 \u043e\u0434\u043d\u043e\u0438\u043c\u0435\u043d\u043d\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u0445:<\/p>\n<pre><code class=\"sql\">select pc.ProductClassName as ProductClassName     ,(select p.ProductName as ProductName         from dbo.Product p     where p.ProductClassId = pc.ProductClassId         for xml path(''), type) as &quot;Products&quot; from dbo.ProductClass pc     for xml path('ProductClass'), type <\/code><\/pre>\n<p>  \u0421\u043f\u0438\u0441\u043e\u043a \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u0432 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0435 Products \u0444\u043e\u0440\u043c\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043f\u043e\u0434\u0437\u0430\u043f\u0440\u043e\u0441\u043e\u043c: <\/p>\n<pre><code class=\"sql\">(select p.ProductName as ProductName     from dbo.Product p where p.ProductClassId = pc.ProductClassId     for xml path(''), type) as &quot;Products&quot;) <\/code><\/pre>\n<p>  \u041f\u0441\u0435\u0432\u0434\u043e\u043d\u0438\u043c\u044b \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u044f\u044e\u0442 \u00ab\u0438\u043c\u0435\u043d\u0430\u00bb XML \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432. \u0414\u0438\u0440\u0435\u043a\u0442\u0438\u0432\u0430 TYPE \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u0432 \u0432\u0438\u0434\u0435 \u0442\u0438\u043f\u0430 \u0434\u0430\u043d\u043d\u044b\u0445 xml. \u0414\u043b\u044f \u0442\u043e\u0433\u043e \u0447\u0442\u043e \u0431\u044b \u043d\u0435 \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043b\u0441\u044f \u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0439 \u044d\u043b\u0435\u043c\u0435\u043d\u0442 \u0434\u043b\u044f \u0441\u043f\u0438\u0441\u043a\u0430 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u043e\u0432 Product.ProductName, \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 PATH \u043d\u0435 \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f(for xml path(&#187;)).<\/p>\n<p>  \u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u043c \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u0431\u0443\u0434\u0435\u0442 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 XML-\u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442:<\/p>\n<pre><code class=\"xml\">&lt;ProductClass&gt;     &lt;ProductClassName&gt;Class_1&lt;\/ProductClassName&gt;     &lt;Products&gt;         &lt;ProductName&gt;Product_1&lt;\/ProductName&gt;         &lt;ProductName&gt;Product_4&lt;\/ProductName&gt;         &lt;ProductName&gt;Product_7&lt;\/ProductName&gt;         &lt;ProductName&gt;Product_10&lt;\/ProductName&gt;     &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;     &lt;ProductClassName&gt;Class_2&lt;\/ProductClassName&gt;     &lt;Products&gt;         &lt;ProductName&gt;Product_2&lt;\/ProductName&gt;         &lt;ProductName&gt;Product_5&lt;\/ProductName&gt;         &lt;ProductName&gt;Product_9&lt;\/ProductName&gt;     &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;     &lt;ProductClassName&gt;Class_3&lt;\/ProductClassName&gt;     &lt;Products&gt;         &lt;ProductName&gt;Product_3&lt;\/ProductName&gt;         &lt;ProductName&gt;Product_6&lt;\/ProductName&gt;         &lt;ProductName&gt;Product_8&lt;\/ProductName&gt;     &lt;\/Products&gt; &lt;\/ProductClass&gt; <\/code><\/pre>\n<p>  \u0414\u043b\u044f \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0441\u043f\u0438\u0441\u043a\u0430 \u0441\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u043c\u0438 \u0432 \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u0430\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430, \u043f\u0441\u0435\u0432\u0434\u043e\u043d\u0438\u043c\u044b \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u044e\u0442\u0441\u044f \u0432 \u043a\u0430\u0432\u044b\u0447\u043a\u0430\u0445(\u043e\u0434\u0438\u043d\u0430\u0440\u043d\u044b\u0435 \u0438\u043b\u0438 \u0434\u0432\u043e\u0439\u043d\u044b\u0435) \u0441 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u043c &#8216;@&#8217; \u0432 \u043d\u0430\u0447\u0430\u043b\u0435:<\/p>\n<pre><code class=\"sql\">select pc.ProductClassName as ProductClassName     ,(select p.ProductId as &quot;@ProductId&quot;, p.ProductName as '@ProductName'         from dbo.Product p     where p.ProductClassId = pc.ProductClassId         for xml path('Product'), type) as &quot;Products&quot; from dbo.ProductClass pc     for xml path('ProductClass'), type <\/code><\/pre>\n<p>  \u0417\u043d\u0430\u0447\u0435\u043d\u0438\u0435 PATH \u0435\u0441\u0442\u044c \u00ab\u0438\u043c\u044f\u00bb \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430 \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0441\u043e\u0434\u0435\u0440\u0436\u0430\u0442\u044c\u0441\u044f \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u044b, \u0440\u0435\u0437\u0443\u043b\u044c\u0442 \u0437\u0430\u043f\u0440\u043e\u0441\u0430 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439:<\/p>\n<pre><code class=\"xml\">&lt;ProductClass&gt;     &lt;ProductClassName&gt;Class_1&lt;\/ProductClassName&gt;     &lt;Products&gt;         &lt;Product ProductId=&quot;1&quot; ProductName=&quot;Product_1&quot; \/&gt;         &lt;Product ProductId=&quot;4&quot; ProductName=&quot;Product_4&quot; \/&gt;         &lt;Product ProductId=&quot;7&quot; ProductName=&quot;Product_7&quot; \/&gt;         &lt;Product ProductId=&quot;10&quot; ProductName=&quot;Product_10&quot; \/&gt;     &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;     &lt;ProductClassName&gt;Class_2&lt;\/ProductClassName&gt;     &lt;Products&gt;         &lt;Product ProductId=&quot;2&quot; ProductName=&quot;Product_2&quot; \/&gt;         &lt;Product ProductId=&quot;5&quot; ProductName=&quot;Product_5&quot; \/&gt;         &lt;Product ProductId=&quot;9&quot; ProductName=&quot;Product_9&quot; \/&gt;     &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;     &lt;ProductClassName&gt;Class_3&lt;\/ProductClassName&gt;     &lt;Products&gt;         &lt;Product ProductId=&quot;3&quot; ProductName=&quot;Product_3&quot; \/&gt;         &lt;Product ProductId=&quot;6&quot; ProductName=&quot;Product_6&quot; \/&gt;         &lt;Product ProductId=&quot;8&quot; ProductName=&quot;Product_8&quot; \/&gt;     &lt;\/Products&gt; &lt;\/ProductClass&gt; <\/code><\/pre>\n<p>  \u0410\u0442\u0440\u0438\u0431\u0443\u0442\u044b \u043c\u043e\u0436\u043d\u043e \u0440\u0430\u0437\u043c\u0435\u0441\u0442\u0438\u0442\u044c \u0432 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0445 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u0445:<\/p>\n<pre><code class=\"sql\">select pc.ProductClassName as ProductClassName     ,(select p.ProductId as &quot;@ProductId&quot;, p.ProductName as ProductName         from dbo.Product p     where p.ProductClassId = pc.ProductClassId         for xml path('Product'), type) as &quot;Products&quot; from dbo.ProductClass pc     for xml path('ProductClass'), type <\/code><\/pre>\n<p>  \u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u0437\u0430\u043f\u0440\u043e\u0441\u0430:<\/p>\n<pre><code class=\"xml\">&lt;ProductClass&gt;   &lt;ProductClassName&gt;Class_1&lt;\/ProductClassName&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;1&quot;&gt;       &lt;ProductName&gt;Product_1&lt;\/ProductName&gt;     &lt;\/Product&gt;     &lt;Product ProductId=&quot;4&quot;&gt;       &lt;ProductName&gt;Product_4&lt;\/ProductName&gt;     &lt;\/Product&gt;     &lt;Product ProductId=&quot;7&quot;&gt;       &lt;ProductName&gt;Product_7&lt;\/ProductName&gt;     &lt;\/Product&gt;     &lt;Product ProductId=&quot;10&quot;&gt;       &lt;ProductName&gt;Product_10&lt;\/ProductName&gt;     &lt;\/Product&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;   &lt;ProductClassName&gt;Class_2&lt;\/ProductClassName&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;2&quot;&gt;       &lt;ProductName&gt;Product_2&lt;\/ProductName&gt;     &lt;\/Product&gt;     &lt;Product ProductId=&quot;5&quot;&gt;       &lt;ProductName&gt;Product_5&lt;\/ProductName&gt;     &lt;\/Product&gt;     &lt;Product ProductId=&quot;9&quot;&gt;       &lt;ProductName&gt;Product_9&lt;\/ProductName&gt;     &lt;\/Product&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;   &lt;ProductClassName&gt;Class_3&lt;\/ProductClassName&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;3&quot;&gt;       &lt;ProductName&gt;Product_3&lt;\/ProductName&gt;     &lt;\/Product&gt;     &lt;Product ProductId=&quot;6&quot;&gt;       &lt;ProductName&gt;Product_6&lt;\/ProductName&gt;     &lt;\/Product&gt;     &lt;Product ProductId=&quot;8&quot;&gt;       &lt;ProductName&gt;Product_8&lt;\/ProductName&gt;     &lt;\/Product&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; <\/code><\/pre>\n<p>  Product.ProductName \u043a\u0430\u043a \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430 Product \u0438 Product.ProductId \u043a\u0430\u043a \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u0430 \u044d\u0442\u043e\u0433\u043e \u0436\u0435 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430:<\/p>\n<pre><code class=\"sql\">select pc.ProductClassName as ProductClassName     ,(select p.ProductId as &quot;@ProductId&quot; \t,(select pn.ProductName  \t\tfrom dbo.Product pn \twhere pn.ProductId = p.ProductId)         from dbo.Product p     where p.ProductClassId = pc.ProductClassId         for xml path('Product'), type) as &quot;Products&quot; from dbo.ProductClass pc     for xml path('ProductClass'), type <\/code><\/pre>\n<p>  \u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442:<\/p>\n<pre><code class=\"xml\">&lt;ProductClass&gt;   &lt;ProductClassName&gt;Class_1&lt;\/ProductClassName&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;1&quot;&gt;Product_1&lt;\/Product&gt;     &lt;Product ProductId=&quot;4&quot;&gt;Product_4&lt;\/Product&gt;     &lt;Product ProductId=&quot;7&quot;&gt;Product_7&lt;\/Product&gt;     &lt;Product ProductId=&quot;10&quot;&gt;Product_10&lt;\/Product&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;   &lt;ProductClassName&gt;Class_2&lt;\/ProductClassName&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;2&quot;&gt;Product_2&lt;\/Product&gt;     &lt;Product ProductId=&quot;5&quot;&gt;Product_5&lt;\/Product&gt;     &lt;Product ProductId=&quot;9&quot;&gt;Product_9&lt;\/Product&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass&gt;   &lt;ProductClassName&gt;Class_3&lt;\/ProductClassName&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;3&quot;&gt;Product_3&lt;\/Product&gt;     &lt;Product ProductId=&quot;6&quot;&gt;Product_6&lt;\/Product&gt;     &lt;Product ProductId=&quot;8&quot;&gt;Product_8&lt;\/Product&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; <\/code><\/pre>\n<p>  \u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 WITH XMLNAMESPACES \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0430 \u0438\u043c\u0435\u043d \u0432 XML:<\/p>\n<pre><code class=\"sql\">WITH XMLNAMESPACES ('uri1' as lev)   select pc.ProductClassName as &quot;lev:ProductClassName&quot;     ,(select p.ProductName as &quot;lev:ProductName&quot;         from dbo.Product p     where p.ProductClassId = pc.ProductClassId         for xml path(''), type) as &quot;lev:Products&quot; from dbo.ProductClass pc     for xml path('lev:ProductClass'), type <\/code><\/pre>\n<p>  <\/p>\n<pre><code class=\"xml\">&lt;lev:ProductClass xmlns:lev=&quot;uri1&quot;&gt;   &lt;lev:ProductClassName&gt;Class_1&lt;\/lev:ProductClassName&gt;   &lt;lev:Products&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_1&lt;\/lev:ProductName&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_4&lt;\/lev:ProductName&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_7&lt;\/lev:ProductName&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_10&lt;\/lev:ProductName&gt;   &lt;\/lev:Products&gt; &lt;\/lev:ProductClass&gt; &lt;lev:ProductClass xmlns:lev=&quot;uri1&quot;&gt;   &lt;lev:ProductClassName&gt;Class_2&lt;\/lev:ProductClassName&gt;   &lt;lev:Products&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_2&lt;\/lev:ProductName&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_5&lt;\/lev:ProductName&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_9&lt;\/lev:ProductName&gt;   &lt;\/lev:Products&gt; &lt;\/lev:ProductClass&gt; &lt;lev:ProductClass xmlns:lev=&quot;uri1&quot;&gt;   &lt;lev:ProductClassName&gt;Class_3&lt;\/lev:ProductClassName&gt;   &lt;lev:Products&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_3&lt;\/lev:ProductName&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_6&lt;\/lev:ProductName&gt;     &lt;lev:ProductName xmlns:lev=&quot;uri1&quot;&gt;Product_8&lt;\/lev:ProductName&gt;   &lt;\/lev:Products&gt; &lt;\/lev:ProductClass&gt; <\/code><\/pre>\n<p>  \u041a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f data() \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0441\u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0441\u043f\u0438\u0441\u043e\u043a \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0438\u0442\u044c \u0432\u0441\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f ProductId \u0434\u043b\u044f \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u043a\u043b\u0430\u0441\u0441\u0430 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u0430 \u0432 \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0435 ProductClass:<\/p>\n<pre><code class=\"sql\">select pc.ProductClassName as &quot;@ProductClassName&quot;     ,(select pid.ProductId as &quot;data()&quot;         from dbo.Product pid     where pid.ProductClassId = pc.ProductClassId         for xml path ('')) as &quot;@ProductIds&quot;     ,(select p.ProductId as &quot;@ProductId&quot;, p.ProductName as '@ProductName'         from dbo.Product p     where p.ProductClassId = pc.ProductClassId         for xml path('Product'), type) as &quot;Products&quot; from dbo.ProductClass pc     for xml path('ProductClass'), type <\/code><\/pre>\n<p>  <\/p>\n<pre><code class=\"xml\">&lt;ProductClass ProductClassName=&quot;Class_1&quot; ProductIds=&quot;1 4 7 10&quot;&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;1&quot; ProductName=&quot;Product_1&quot; \/&gt;     &lt;Product ProductId=&quot;4&quot; ProductName=&quot;Product_4&quot; \/&gt;     &lt;Product ProductId=&quot;7&quot; ProductName=&quot;Product_7&quot; \/&gt;     &lt;Product ProductId=&quot;10&quot; ProductName=&quot;Product_10&quot; \/&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass ProductClassName=&quot;Class_2&quot; ProductIds=&quot;2 5 9&quot;&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;2&quot; ProductName=&quot;Product_2&quot; \/&gt;     &lt;Product ProductId=&quot;5&quot; ProductName=&quot;Product_5&quot; \/&gt;     &lt;Product ProductId=&quot;9&quot; ProductName=&quot;Product_9&quot; \/&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; &lt;ProductClass ProductClassName=&quot;Class_3&quot; ProductIds=&quot;3 6 8&quot;&gt;   &lt;Products&gt;     &lt;Product ProductId=&quot;3&quot; ProductName=&quot;Product_3&quot; \/&gt;     &lt;Product ProductId=&quot;6&quot; ProductName=&quot;Product_6&quot; \/&gt;     &lt;Product ProductId=&quot;8&quot; ProductName=&quot;Product_8&quot; \/&gt;   &lt;\/Products&gt; &lt;\/ProductClass&gt; <\/code><\/pre>\n<p>  <a href=\"https:\/\/docs.microsoft.com\/ru-ru\/sql\/relational-databases\/xml\/xml-data-sql-server?view=sql-server-ver15\" rel=\"nofollow\">\u0411\u043e\u043b\u044c\u0448\u0435 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u0438<\/a><\/div>\n<p> \u0441\u0441\u044b\u043b\u043a\u0430 \u043d\u0430 \u043e\u0440\u0438\u0433\u0438\u043d\u0430\u043b \u0441\u0442\u0430\u0442\u044c\u0438 <a href=\"https:\/\/habr.com\/ru\/post\/506942\/\"> https:\/\/habr.com\/ru\/post\/506942\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"\n<div class=\"post__text post__text-html post__text_v1\" id=\"post-content-body\" data-io-article-url=\"https:\/\/habr.com\/ru\/post\/506942\/\"><img decoding=\"async\" src=\"https:\/\/habrastorage.org\/webt\/5r\/_9\/k2\/5r_9k2jiwhyxazbdvsad4tn2ahw.jpeg\"><\/p>\n<h3>\u041d\u0435\u0431\u043e\u043b\u044c\u0448\u0430\u044f \u0437\u0430\u043c\u0435\u0442\u043a\u0430 \u043f\u043e \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e XML<\/h3>\n<p>  <\/p>\n<h3>FOR XML PATH<\/h3>\n<p>  \u0414\u043b\u044f \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b XML-\u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430 \u0441\u043e \u0441\u043f\u0438\u0441\u043a\u043e\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439 \u043c\u043e\u0436\u043d\u043e \u0432\u043e\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0440\u0435\u0436\u0438\u043c\u043e\u043c PATH \u0434\u043b\u044f FOR XML \u0432 T-SQL.<\/p>\n<pre><code class=\"xml\">&lt;root&gt;     &lt;level1&gt;         &lt;level2&gt;&lt;\/level2&gt;         &lt;values&gt;             &lt;value&gt;&lt;\/value&gt;             &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;             &lt;value&gt;&lt;\/value&gt;             &lt;value&gt;&lt;\/value&gt;         &lt;\/values&gt;      &lt;\/level1&gt;      &lt;level1&gt;          &lt;level2&gt;&lt;\/level2&gt;          &lt;values&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;              &lt;value&gt;&lt;\/value&gt;          &lt;\/values&gt;      &lt;\/level1&gt; &lt;\/root&gt; <\/code><\/pre>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-305865","post","type-post","status-publish","format-standard","hentry"],"_links":{"self":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/305865","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=305865"}],"version-history":[{"count":0,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=\/wp\/v2\/posts\/305865\/revisions"}],"wp:attachment":[{"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=305865"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=305865"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/savepearlharbor.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=305865"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}