{"id":167991,"date":"2024-11-06T08:36:17","date_gmt":"2024-11-06T00:36:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/167991\/"},"modified":"2024-11-06T08:36:19","modified_gmt":"2024-11-06T00:36:19","slug":"%e8%81%8a%e8%81%8a-sql-%e4%b8%ad%e7%9a%84-for-xml-path","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/167991\/","title":{"rendered":"\u804a\u804a SQL \u4e2d\u7684 For Xml Path"},"content":{"rendered":"<h1 id=\"%e8%81%8a%e8%81%8a-sql-%e4%b8%ad%e7%9a%84-for-xml-path-ykCdWUGJbd\">\u804a\u804a SQL \u4e2d\u7684 For XML Path<\/h1>\n<p>\u5728 SQL Server \u4e2d\uff0c<code>FOR XML PATH<\/code> \u662f\u4e00\u500b\u5f37\u5927\u7684\u529f\u80fd\uff0c\u5141\u8a31\u7528\u6236\u5c07\u67e5\u8a62\u7d50\u679c\u8f49\u63db\u70ba XML \u683c\u5f0f\u3002\u9019\u5c0d\u65bc\u9700\u8981\u5c07\u6578\u64da\u4ee5 XML \u683c\u5f0f\u8f38\u51fa\u6216\u9032\u884c\u6578\u64da\u4ea4\u63db\u7684\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\uff0c\u7279\u5225\u6709\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e <code>FOR XML PATH<\/code> \u7684\u7528\u6cd5\u3001\u512a\u52e2\u4ee5\u53ca\u4e00\u4e9b\u5be6\u969b\u7684\u7bc4\u4f8b\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-for-xml-path-ykCdWUGJbd\">\u4ec0\u9ebc\u662f FOR XML PATH<\/h2>\n<p><code>FOR XML PATH<\/code> \u662f SQL Server \u63d0\u4f9b\u7684\u4e00\u7a2e\u9078\u9805\uff0c\u5141\u8a31\u7528\u6236\u5728\u67e5\u8a62\u4e2d\u751f\u6210 XML \u683c\u5f0f\u7684\u8f38\u51fa\u3002\u9019\u500b\u529f\u80fd\u53ef\u4ee5\u7528\u4f86\u5275\u5efa\u81ea\u5b9a\u7fa9\u7684 XML \u7d50\u69cb\uff0c\u4e26\u4e14\u53ef\u4ee5\u8207\u5176\u4ed6 SQL \u8a9e\u53e5\u7d50\u5408\u4f7f\u7528\uff0c\u4ee5\u4fbf\u66f4\u9748\u6d3b\u5730\u8655\u7406\u6578\u64da\u3002<\/p>\n<h2 id=\"for-xml-path-%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-ykCdWUGJbd\">FOR XML PATH \u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u57fa\u672c\u7684\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT column1, column2\nFROM table_name\nFOR XML PATH('element_name')<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c<code>element_name<\/code> \u662f\u751f\u6210\u7684 XML \u5143\u7d20\u7684\u540d\u7a31\u3002\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u8fd4\u56de\u4e00\u500b XML \u6587\u6a94\uff0c\u5176\u4e2d\u6bcf\u4e00\u884c\u6578\u64da\u90fd\u6703\u88ab\u5305\u88dd\u5728\u6307\u5b9a\u7684\u5143\u7d20\u4e2d\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e7%af%84%e4%be%8b-ykCdWUGJbd\">\u4f7f\u7528\u7bc4\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u7bc4\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 <code>FOR XML PATH<\/code> \u4f86\u751f\u6210 XML \u6578\u64da\uff1a<\/p>\n<pre><code>SELECT FirstName, LastName\nFROM Employees\nFOR XML PATH('Employee')<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u985e\u4f3c\u4ee5\u4e0b\u7684 XML \u7d50\u69cb\uff1a<\/p>\n<pre><code>&lt;Employee&gt;\n    &lt;FirstName&gt;John&lt;\/FirstName&gt;\n    &lt;LastName&gt;Doe&lt;\/LastName&gt;\n&lt;\/Employee&gt;\n&lt;Employee&gt;\n    &lt;FirstName&gt;Jane&lt;\/FirstName&gt;\n    &lt;LastName&gt;Smith&lt;\/LastName&gt;\n&lt;\/Employee&gt;<\/code><\/pre>\n<h2 id=\"%e8%87%aa%e5%ae%9a%e7%be%a9-xml-%e7%b5%90%e6%a7%8b-ykCdWUGJbd\">\u81ea\u5b9a\u7fa9 XML \u7d50\u69cb<\/h2>\n<p>\u4f7f\u7528 <code>FOR XML PATH<\/code>\uff0c\u7528\u6236\u53ef\u4ee5\u5275\u5efa\u66f4\u8907\u96dc\u7684 XML \u7d50\u69cb\u3002\u4f8b\u5982\uff0c\u5047\u8a2d\u6211\u5011\u60f3\u8981\u5c07\u54e1\u5de5\u7684\u59d3\u540d\u548c\u4ed6\u5011\u7684\u90e8\u9580\u4fe1\u606f\u653e\u5728\u540c\u4e00\u500b XML \u5143\u7d20\u4e2d\uff0c\u6211\u5011\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>SELECT FirstName, LastName, Department\nFROM Employees\nFOR XML PATH('Employee'), ROOT('Employees')<\/code><\/pre>\n<p>\u9019\u6a23\u7684\u67e5\u8a62\u5c07\u751f\u6210\u4e00\u500b\u5305\u542b\u6839\u5143\u7d20\u7684 XML \u7d50\u69cb\uff1a<\/p>\n<pre><code>&lt;Employees&gt;\n    &lt;Employee&gt;\n        &lt;FirstName&gt;John&lt;\/FirstName&gt;\n        &lt;LastName&gt;Doe&lt;\/LastName&gt;\n        &lt;Department&gt;Sales&lt;\/Department&gt;\n    &lt;\/Employee&gt;\n    &lt;Employee&gt;\n        &lt;FirstName&gt;Jane&lt;\/FirstName&gt;\n        &lt;LastName&gt;Smith&lt;\/LastName&gt;\n        &lt;Department&gt;Marketing&lt;\/Department&gt;\n    &lt;\/Employee&gt;\n&lt;\/Employees&gt;<\/code><\/pre>\n<h2 id=\"for-xml-path-%e7%9a%84%e5%84%aa%e5%8b%a2-ykCdWUGJbd\">FOR XML PATH \u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u9748\u6d3b\u6027\uff1a<\/strong>\u7528\u6236\u53ef\u4ee5\u81ea\u5b9a\u7fa9 XML \u7d50\u69cb\uff0c\u6839\u64da\u9700\u6c42\u751f\u6210\u4e0d\u540c\u7684\u8f38\u51fa\u683c\u5f0f\u3002<\/li>\n<li><strong>\u7c21\u5316\u6578\u64da\u4ea4\u63db\uff1a<\/strong>XML \u662f\u4e00\u7a2e\u5ee3\u6cdb\u4f7f\u7528\u7684\u6578\u64da\u683c\u5f0f\uff0c\u4f7f\u7528 <code>FOR XML PATH<\/code> \u53ef\u4ee5\u8f15\u9b06\u5730\u5c07\u6578\u64da\u5c0e\u51fa\u70ba XML\uff0c\u4fbf\u65bc\u8207\u5176\u4ed6\u7cfb\u7d71\u9032\u884c\u6578\u64da\u4ea4\u63db\u3002<\/li>\n<li><strong>\u96c6\u6210\u6027\uff1a<\/strong>\u53ef\u4ee5\u8207\u5176\u4ed6 SQL \u67e5\u8a62\u7d50\u5408\u4f7f\u7528\uff0c\u5f9e\u800c\u5728\u751f\u6210 XML \u7684\u540c\u6642\u9032\u884c\u6578\u64da\u8655\u7406\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-ykCdWUGJbd\">\u7e3d\u7d50<\/h2>\n<p>\u5728 SQL Server \u4e2d\uff0c<code>FOR XML PATH<\/code> \u662f\u4e00\u500b\u975e\u5e38\u6709\u7528\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5c07\u67e5\u8a62\u7d50\u679c\u8f49\u63db\u70ba XML \u683c\u5f0f\u3002\u901a\u904e\u9748\u6d3b\u7684\u8a9e\u6cd5\u548c\u81ea\u5b9a\u7fa9\u9078\u9805\uff0c\u7528\u6236\u53ef\u4ee5\u751f\u6210\u7b26\u5408\u9700\u6c42\u7684 XML \u7d50\u69cb\uff0c\u5f9e\u800c\u7c21\u5316\u6578\u64da\u4ea4\u63db\u548c\u96c6\u6210\u7684\u904e\u7a0b\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u7528\u6236\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 SQL \u4e2d\u7684 FOR XML PATH \u7528\u6cd5\uff0c\u4e86\u89e3\u5982\u4f55\u5c06\u67e5\u8be2\u7ed3\u679c\u8f6c\u6362\u4e3a XML \u683c\u5f0f\uff0c\u7b80\u5316\u6570\u636e\u5904\u7406\u4e0e\u5c55\u793a\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-167991","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=167991"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167991\/revisions"}],"predecessor-version":[{"id":167992,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/167991\/revisions\/167992"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=167991"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=167991"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=167991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}