{"id":153147,"date":"2024-11-02T05:01:18","date_gmt":"2024-11-01T21:01:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153147\/"},"modified":"2024-11-02T05:01:19","modified_gmt":"2024-11-01T21:01:19","slug":"%e5%be%9e-mssql-%e4%b8%80%e8%a1%8c%e6%95%b8%e6%93%9a%e5%88%86%e5%89%b2%e6%88%90%e5%a4%9a%e8%a1%8c%ef%bc%88mssql-%e4%b8%80%e8%a1%8c%e8%bd%89%e5%a4%9a%e8%a1%8c%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153147\/","title":{"rendered":"\u5f9e MSSQL \u4e00\u884c\u6578\u64da\u5206\u5272\u6210\u591a\u884c\uff08MSSQL \u4e00\u884c\u8f49\u591a\u884c\uff09"},"content":{"rendered":"<h1 id=\"%e5%be%9e-mssql-%e4%b8%80%e8%a1%8c%e6%95%b8%e6%93%9a%e5%88%86%e5%89%b2%e6%88%90%e5%a4%9a%e8%a1%8c%ef%bc%88mssql-%e4%b8%80%e8%a1%8c%e8%bd%89%e5%a4%9a%e8%a1%8c%ef%bc%89-SQyVWWrqiD\">\u5f9e MSSQL \u4e00\u884c\u6578\u64da\u5206\u5272\u6210\u591a\u884c\uff08MSSQL \u4e00\u884c\u8f49\u591a\u884c\uff09<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0c\u7d93\u5e38\u6703\u9047\u5230\u9700\u8981\u5c07\u4e00\u884c\u6578\u64da\u5206\u5272\u6210\u591a\u884c\u7684\u60c5\u6cc1\u3002\u9019\u5728\u8655\u7406\u5831\u8868\u3001\u6578\u64da\u5206\u6790\u6216\u6578\u64da\u9077\u79fb\u6642\u5c24\u70ba\u91cd\u8981\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u5728 Microsoft SQL Server (MSSQL) \u4e2d\u5be6\u73fe\u9019\u4e00\u529f\u80fd\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e5%b0%87%e4%b8%80%e8%a1%8c%e6%95%b8%e6%93%9a%e8%bd%89%e6%8f%9b%e7%82%ba%e5%a4%9a%e8%a1%8c-SQyVWWrqiD\">\u70ba\u4ec0\u9ebc\u9700\u8981\u5c07\u4e00\u884c\u6578\u64da\u8f49\u63db\u70ba\u591a\u884c<\/h2>\n<p>\u5c07\u4e00\u884c\u6578\u64da\u8f49\u63db\u70ba\u591a\u884c\u7684\u9700\u6c42\u901a\u5e38\u51fa\u73fe\u5728\u4ee5\u4e0b\u5e7e\u7a2e\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li>\u6578\u64da\u683c\u5f0f\u5316\uff1a\u7576\u4e00\u884c\u4e2d\u5305\u542b\u591a\u500b\u7528\u9017\u865f\u6216\u5176\u4ed6\u5206\u9694\u7b26\u5206\u9694\u7684\u503c\u6642\uff0c\u5c07\u5176\u8f49\u63db\u70ba\u591a\u884c\u53ef\u4ee5\u63d0\u9ad8\u53ef\u8b80\u6027\u3002<\/li>\n<li>\u6578\u64da\u5206\u6790\uff1a\u5728\u9032\u884c\u6578\u64da\u5206\u6790\u6642\uff0c\u5c07\u6578\u64da\u5c55\u958b\u70ba\u591a\u884c\u53ef\u4ee5\u66f4\u65b9\u4fbf\u5730\u9032\u884c\u805a\u5408\u548c\u8a08\u7b97\u3002<\/li>\n<li>\u5831\u8868\u751f\u6210\uff1a\u5728\u751f\u6210\u5831\u8868\u6642\uff0c\u5c07\u6578\u64da\u5c55\u958b\u70ba\u591a\u884c\u53ef\u4ee5\u4f7f\u5831\u8868\u66f4\u5177\u53ef\u8b80\u6027\u548c\u7d50\u69cb\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"mssql-%e4%b8%ad%e7%9a%84%e6%95%b8%e6%93%9a%e5%88%86%e5%89%b2%e6%96%b9%e6%b3%95-SQyVWWrqiD\">MSSQL \u4e2d\u7684\u6578\u64da\u5206\u5272\u65b9\u6cd5<\/h2>\n<p>\u5728 MSSQL \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u591a\u7a2e\u65b9\u6cd5\u5c07\u4e00\u884c\u6578\u64da\u5206\u5272\u6210\u591a\u884c\u3002\u4ee5\u4e0b\u662f\u5e7e\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e4%bd%bf%e7%94%a8-string_split-%e5%87%bd%e6%95%b8-SQyVWWrqiD\">1. \u4f7f\u7528 STRING_SPLIT \u51fd\u6578<\/h3>\n<p>\u5f9e SQL Server 2016 \u958b\u59cb\uff0cMSSQL \u63d0\u4f9b\u4e86 <code>STRING_SPLIT<\/code> \u51fd\u6578\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5c07\u4e00\u884c\u6578\u64da\u5206\u5272\u6210\u591a\u884c\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528 <code>STRING_SPLIT<\/code> \u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>DECLARE @data NVARCHAR(MAX) = 'A,B,C,D,E';\nSELECT value\nFROM STRING_SPLIT(@data, ',');<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u5c07\u5b57\u7b26\u4e32 &#8216;A,B,C,D,E&#8217; \u5206\u5272\u70ba\u591a\u884c\uff0c\u7d50\u679c\u5982\u4e0b\uff1a<\/p>\n<ul>\n<li>A<\/li>\n<li>B<\/li>\n<li>C<\/li>\n<li>D<\/li>\n<li>E<\/li>\n<\/ul>\n<h3 id=\"2-%e4%bd%bf%e7%94%a8-xml-%e6%96%b9%e6%b3%95-SQyVWWrqiD\">2. \u4f7f\u7528 XML \u65b9\u6cd5<\/h3>\n<p>\u53e6\u4e00\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\u662f\u4f7f\u7528 XML \u4f86\u5206\u5272\u6578\u64da\u3002\u9019\u7a2e\u65b9\u6cd5\u9069\u7528\u65bc\u8f03\u820a\u7248\u672c\u7684 SQL Server\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\u4ee3\u78bc\uff1a<\/p>\n<pre><code>DECLARE @data NVARCHAR(MAX) = 'A,B,C,D,E';\nSELECT\n    Split.a.value('.', 'VARCHAR(100)') AS Value\nFROM\n(\n    SELECT CAST('' + REPLACE(@data, ',', '') + '' AS XML) AS Data\n) AS A\nCROSS APPLY Data.nodes('\/M') AS Split(a);<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u5c07\u5b57\u7b26\u4e32 &#8216;A,B,C,D,E&#8217; \u8f49\u63db\u70ba\u591a\u884c\uff0c\u7d50\u679c\u8207\u524d\u9762\u7684\u793a\u4f8b\u76f8\u540c\u3002<\/p>\n<h3 id=\"3-%e4%bd%bf%e7%94%a8%e9%81%9e%e6%ad%b8-cte-SQyVWWrqiD\">3. \u4f7f\u7528\u905e\u6b78 CTE<\/h3>\n<p>\u5982\u679c\u9700\u8981\u8655\u7406\u66f4\u8907\u96dc\u7684\u6578\u64da\u5206\u5272\u60c5\u6cc1\uff0c\u53ef\u4ee5\u4f7f\u7528\u905e\u6b78\u516c\u7528\u8868\u8868\u9054\u5f0f (CTE)\u3002\u4ee5\u4e0b\u662f\u793a\u4f8b\uff1a<\/p>\n<pre><code>WITH SplitCTE AS\n(\n    SELECT \n        LEFT(@data, CHARINDEX(',', @data + ',') - 1) AS Value,\n        STUFF(@data, 1, CHARINDEX(',', @data + ','), '') AS Remaining\n    UNION ALL\n    SELECT \n        LEFT(Remaining, CHARINDEX(',', Remaining + ',') - 1),\n        STUFF(Remaining, 1, CHARINDEX(',', Remaining + ','), '')\n    FROM SplitCTE\n    WHERE Remaining  ''\n)\nSELECT Value FROM SplitCTE;<\/code><\/pre>\n<p>\u9019\u6bb5\u4ee3\u78bc\u4f7f\u7528\u905e\u6b78 CTE \u5c07\u5b57\u7b26\u4e32\u5206\u5272\u70ba\u591a\u884c\uff0c\u4e26\u4e14\u53ef\u4ee5\u8655\u7406\u66f4\u8907\u96dc\u7684\u60c5\u6cc1\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-SQyVWWrqiD\">\u7e3d\u7d50<\/h2>\n<p>\u5728 MSSQL \u4e2d\uff0c\u5c07\u4e00\u884c\u6578\u64da\u5206\u5272\u6210\u591a\u884c\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\uff0c\u7121\u8ad6\u662f\u70ba\u4e86\u6578\u64da\u5206\u6790\u3001\u5831\u8868\u751f\u6210\u9084\u662f\u6578\u64da\u683c\u5f0f\u5316\u3002\u901a\u904e\u4f7f\u7528 <code>STRING_SPLIT<\/code> \u51fd\u6578\u3001XML \u65b9\u6cd5\u6216\u905e\u6b78 CTE\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u9748\u6d3b\u5730\u8655\u7406\u9019\u4e00\u9700\u6c42\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u548c\u7a69\u5b9a\u7684\u6578\u64da\u8655\u7406\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u670d\u52d9\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728 MSSQL \u4e2d\u5c07\u4e00\u884c\u6578\u64da\u5206\u5272\u6210\u591a\u884c\uff0c\u63d0\u5347\u6578\u64da\u8655\u7406\u6548\u7387\uff0c\u7c21\u5316\u67e5\u8a62\u548c\u5831\u544a\u751f\u6210\u904e\u7a0b\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-153147","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153147","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=153147"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153147\/revisions"}],"predecessor-version":[{"id":153148,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153147\/revisions\/153148"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153147"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153147"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153147"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}