{"id":138451,"date":"2024-10-31T14:35:20","date_gmt":"2024-10-31T06:35:20","guid":{"rendered":"https:\/\/server.hk\/cnblog\/138451\/"},"modified":"2024-10-31T14:35:21","modified_gmt":"2024-10-31T06:35:21","slug":"sql-server%e6%9f%a5%e6%89%bexml%e8%a3%a1%e9%9d%a2%e7%ac%a6%e5%90%88%e6%9f%90%e5%80%8b%e6%a2%9d%e4%bb%b6%e7%9a%84%e6%95%b8%e6%93%9a%e7%9a%84%e7%94%a8%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/138451\/","title":{"rendered":"SQL Server\u67e5\u627eXML\u88e1\u9762\u7b26\u5408\u67d0\u500b\u689d\u4ef6\u7684\u6578\u64da\u7684\u7528\u6cd5"},"content":{"rendered":"

SQL Server\u67e5\u627eXML\u88e1\u9762\u7b26\u5408\u67d0\u500b\u689d\u4ef6\u7684\u6578\u64da\u7684\u7528\u6cd5<\/h1>\n

\u5728\u7576\u4eca\u7684\u6578\u64da\u7ba1\u7406\u4e2d\uff0cXML\uff08\u53ef\u64f4\u5c55\u6a19\u8a18\u8a9e\u8a00\uff09\u88ab\u5ee3\u6cdb\u7528\u65bc\u5b58\u5132\u548c\u50b3\u8f38\u6578\u64da\u3002SQL Server\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u529f\u80fd\u4f86\u8655\u7406XML\u6578\u64da\uff0c\u8b93\u7528\u6236\u80fd\u5920\u8f15\u9b06\u67e5\u627e\u548c\u64cd\u4f5cXML\u4e2d\u7684\u6578\u64da\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728SQL Server\u4e2d\u67e5\u627eXML\u88e1\u9762\u7b26\u5408\u67d0\u500b\u689d\u4ef6\u7684\u6578\u64da\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u7bc4\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n

XML\u6578\u64da\u985e\u578b\u7684\u4ecb\u7d39<\/h2>\n

\u5728SQL Server\u4e2d\uff0cXML\u6578\u64da\u985e\u578b\u5141\u8a31\u7528\u6236\u5b58\u5132XML\u683c\u5f0f\u7684\u6578\u64da\u3002\u9019\u7a2e\u6578\u64da\u985e\u578b\u652f\u6301\u591a\u7a2e\u64cd\u4f5c\uff0c\u5305\u62ec\u67e5\u8a62\u3001\u66f4\u65b0\u548c\u9a57\u8b49XML\u6578\u64da\u3002\u4f7f\u7528XML\u6578\u64da\u985e\u578b\u7684\u4e3b\u8981\u512a\u52e2\u5728\u65bc\u5176\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u7d50\u69cb\u5316\u548c\u534a\u7d50\u69cb\u5316\u6578\u64da\u6642\u3002<\/p>\n

\u67e5\u8a62XML\u6578\u64da\u7684\u57fa\u672c\u65b9\u6cd5<\/h2>\n

\u5728SQL Server\u4e2d\uff0c\u67e5\u8a62XML\u6578\u64da\u901a\u5e38\u4f7f\u7528XQuery\u8a9e\u8a00\u3002XQuery\u662f\u4e00\u7a2e\u7528\u65bc\u67e5\u8a62\u548c\u8655\u7406XML\u6578\u64da\u7684\u8a9e\u8a00\uff0c\u80fd\u5920\u5f9eXML\u6587\u6a94\u4e2d\u63d0\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002<\/p>\n

\u4f7f\u7528.value()\u65b9\u6cd5<\/h3>\n

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DECLARE @xml XML = \n'\n    \n        Item1\n        100\n    \n    \n        Item2\n        200\n    \n';\n\nSELECT @xml.value('(\/root\/item[name=\"Item1\"]\/price)[1]', 'int') AS Price;\n<\/code><\/pre>\n
\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5f9eXML\u4e2d\u67e5\u627e\u540d\u7a31\u70ba\u201cItem1\u201d\u7684\u9805\u76ee\u7684\u50f9\u683c\uff0c\u4e26\u5c07\u5176\u8f49\u63db\u70ba\u6574\u6578\u985e\u578b\u3002<\/p>\n
\u4f7f\u7528.nodes()\u65b9\u6cd5<\/h3>\n
\u7576\u9700\u8981\u67e5\u8a62\u591a\u500b\u7bc0\u9ede\u6642\uff0c\u53ef\u4ee5\u4f7f\u7528.nodes()\u65b9\u6cd5\u3002\u9019\u500b\u65b9\u6cd5\u6703\u8fd4\u56de\u4e00\u500b\u5305\u542b\u6240\u6709\u5339\u914d\u7bc0\u9ede\u7684\u7d50\u679c\u96c6\u3002<\/p>\n
DECLARE @xml XML = \n'\n    \n        Item1\n        100\n    \n    \n        Item2\n        200\n    \n';\n\nSELECT \n    T.Item.value('(name)[1]', 'nvarchar(50)') AS ItemName,\n    T.Item.value('(price)[1]', 'int') AS ItemPrice\nFROM \n    @xml.nodes('\/root\/item') AS T(Item);\n<\/code><\/pre>\n
\u5728\u9019\u500b\u7bc4\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528.nodes()\u65b9\u6cd5\u4f86\u7372\u53d6\u6240\u6709\u9805\u76ee\u7684\u540d\u7a31\u548c\u50f9\u683c\uff0c\u4e26\u5c07\u5176\u986f\u793a\u5728\u7d50\u679c\u96c6\u4e2d\u3002<\/p>\n
\u67e5\u627e\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u6578\u64da<\/h2>\n
\u5982\u679c\u9700\u8981\u67e5\u627e\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u6578\u64da\uff0c\u53ef\u4ee5\u5728XQuery\u4e2d\u4f7f\u7528\u689d\u4ef6\u8a9e\u53e5\u3002\u4f8b\u5982\uff0c\u67e5\u627e\u50f9\u683c\u5927\u65bc150\u7684\u9805\u76ee\uff1a<\/p>\n
DECLARE @xml XML = \n'\n    \n        Item1\n        100\n    \n    \n        Item2\n        200\n    \n';\n\nSELECT \n    T.Item.value('(name)[1]', 'nvarchar(50)') AS ItemName,\n    T.Item.value('(price)[1]', 'int') AS ItemPrice\nFROM \n    @xml.nodes('\/root\/item[price > 150]') AS T(Item);\n<\/code><\/pre>\n
\u9019\u6bb5\u4ee3\u78bc\u5c07\u8fd4\u56de\u6240\u6709\u50f9\u683c\u5927\u65bc150\u7684\u9805\u76ee\uff0c\u986f\u793a\u5176\u540d\u7a31\u548c\u50f9\u683c\u3002<\/p>\n
\u7e3d\u7d50<\/h2>\n
\u5728SQL Server\u4e2d\u67e5\u627eXML\u88e1\u9762\u7b26\u5408\u67d0\u500b\u689d\u4ef6\u7684\u6578\u64da\u662f\u4e00\u500b\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u529f\u80fd\u3002\u901a\u904e\u4f7f\u7528.value()\u548c.nodes()\u65b9\u6cd5\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u5f9eXML\u6578\u64da\u4e2d\u63d0\u53d6\u6240\u9700\u7684\u4fe1\u606f\u3002\u9019\u4e9b\u6280\u8853\u4e0d\u50c5\u63d0\u9ad8\u4e86\u6578\u64da\u67e5\u8a62\u7684\u6548\u7387\uff0c\u9084\u4f7f\u5f97\u6578\u64da\u7ba1\u7406\u8b8a\u5f97\u66f4\u52a0\u7c21\u55ae\u3002<\/p>\n
\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u7ba1\u7406\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u548c\u6578\u64da\u5eab\u9700\u6c42\u3002\u7121\u8ad6\u662f\u9700\u8981\u5f37\u5927\u7684\u8a08\u7b97\u80fd\u529b\u9084\u662f\u9748\u6d3b\u7684\u5b58\u5132\u9078\u64c7\uff0c\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u7406\u60f3\u7684\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e86\u89e3\u5982\u4f55\u5728SQL Server\u4e2d\u67e5\u627eXML\u6578\u64da\uff0c\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u63d0\u53d6\u6240\u9700\u4fe1\u606f\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\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-138451","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138451","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=138451"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138451\/revisions"}],"predecessor-version":[{"id":138452,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/138451\/revisions\/138452"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=138451"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=138451"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=138451"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}