{"id":64921,"date":"2024-10-14T12:43:18","date_gmt":"2024-10-14T04:43:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/64921\/"},"modified":"2024-10-14T12:43:18","modified_gmt":"2024-10-14T04:43:18","slug":"mssql%e6%9f%a5%e8%a9%a2%ef%bc%9a%e5%bc%b7%e5%a4%a7%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e6%90%9c%e7%b4%a2%e5%b7%a5%e5%85%b7%ef%bc%88mssql%e6%9f%a5%e8%a9%a2%e8%bb%9f%e4%bb%b6%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/64921\/","title":{"rendered":"MSSQL\u67e5\u8a62\uff1a\u5f37\u5927\u7684\u6578\u64da\u5eab\u641c\u7d22\u5de5\u5177\uff08mssql\u67e5\u8a62\u8edf\u4ef6\uff09"},"content":{"rendered":"<h1 id=\"mssql%e6%9f%a5%e8%a9%a2%ef%bc%9a%e5%bc%b7%e5%a4%a7%e7%9a%84%e6%95%b8%e6%93%9a%e5%ba%ab%e6%90%9c%e7%b4%a2%e5%b7%a5%e5%85%b7%ef%bc%88mssql%e6%9f%a5%e8%a9%a2%e8%bb%9f%e4%bb%b6%ef%bc%89-daqaBLXeqZ\">MSSQL\u67e5\u8a62\uff1a\u5f37\u5927\u7684\u6578\u64da\u5eab\u641c\u7d22\u5de5\u5177\uff08mssql\u67e5\u8a62\u8edf\u4ef6\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff08DBMS\uff09\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\u3002Microsoft SQL Server\uff08MSSQL\uff09\u4f5c\u70ba\u4e00\u6b3e\u6d41\u884c\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u63d0\u4f9b\u4e86\u5f37\u5927\u7684\u67e5\u8a62\u529f\u80fd\uff0c\u5e6b\u52a9\u7528\u6236\u9ad8\u6548\u5730\u6aa2\u7d22\u548c\u7ba1\u7406\u6578\u64da\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMSSQL\u67e5\u8a62\u7684\u57fa\u672c\u6982\u5ff5\u3001\u5e38\u7528\u8a9e\u6cd5\u53ca\u5176\u5728\u5be6\u969b\u61c9\u7528\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n<h2 id=\"mssql%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-daqaBLXeqZ\">MSSQL\u67e5\u8a62\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>MSSQL\u67e5\u8a62\u662f\u7528\u65bc\u5f9e\u6578\u64da\u5eab\u4e2d\u6aa2\u7d22\u6578\u64da\u7684\u6307\u4ee4\u3002\u9019\u4e9b\u67e5\u8a62\u901a\u5e38\u4f7f\u7528\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff08SQL\uff09\u4f86\u7de8\u5beb\uff0cSQL\u662f\u4e00\u7a2e\u6a19\u6e96\u7684\u6578\u64da\u5eab\u67e5\u8a62\u8a9e\u8a00\u3002MSSQL\u67e5\u8a62\u7684\u4e3b\u8981\u76ee\u7684\u662f\u5f9e\u4e00\u500b\u6216\u591a\u500b\u8868\u4e2d\u63d0\u53d6\u6240\u9700\u7684\u4fe1\u606f\uff0c\u4e26\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u9032\u884c\u904e\u6ffe\u548c\u6392\u5e8f\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e7%94%a8%e7%9a%84mssql%e6%9f%a5%e8%a9%a2%e8%aa%9e%e6%b3%95-daqaBLXeqZ\">\u5e38\u7528\u7684MSSQL\u67e5\u8a62\u8a9e\u6cd5<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684MSSQL\u67e5\u8a62\u8a9e\u6cd5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"1-%e5%9f%ba%e6%9c%ac%e6%9f%a5%e8%a9%a2-daqaBLXeqZ\">1. \u57fa\u672c\u67e5\u8a62<\/h3>\n<pre><code>SELECT column1, column2 FROM table_name;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u5f9e\u6307\u5b9a\u7684\u8868\u4e2d\u9078\u64c7\u7279\u5b9a\u7684\u5217\u3002<\/p>\n<h3 id=\"2-%e6%a2%9d%e4%bb%b6%e6%9f%a5%e8%a9%a2-daqaBLXeqZ\">2. \u689d\u4ef6\u67e5\u8a62<\/h3>\n<pre><code>SELECT column1, column2 FROM table_name WHERE condition;<\/code><\/pre>\n<p>\u4f7f\u7528WHERE\u5b50\u53e5\u53ef\u4ee5\u6839\u64da\u7279\u5b9a\u689d\u4ef6\u904e\u6ffe\u7d50\u679c\u3002\u4f8b\u5982\uff1a<\/p>\n<pre><code>SELECT * FROM Employees WHERE Age &gt; 30;<\/code><\/pre>\n<h3 id=\"3-%e6%8e%92%e5%ba%8f%e6%9f%a5%e8%a9%a2-daqaBLXeqZ\">3. \u6392\u5e8f\u67e5\u8a62<\/h3>\n<pre><code>SELECT column1, column2 FROM table_name ORDER BY column1 ASC|DESC;<\/code><\/pre>\n<p>\u9019\u689d\u67e5\u8a62\u5c07\u6839\u64da\u6307\u5b9a\u7684\u5217\u9032\u884c\u6392\u5e8f\uff0cASC\u8868\u793a\u5347\u5e8f\uff0cDESC\u8868\u793a\u964d\u5e8f\u3002<\/p>\n<h3 id=\"4-%e8%81%9a%e5%90%88%e5%87%bd%e6%95%b8-daqaBLXeqZ\">4. \u805a\u5408\u51fd\u6578<\/h3>\n<pre><code>SELECT COUNT(*), AVG(column_name) FROM table_name;<\/code><\/pre>\n<p>\u805a\u5408\u51fd\u6578\u5982COUNT\u548cAVG\u53ef\u4ee5\u7528\u4f86\u8a08\u7b97\u6578\u64da\u7684\u7d71\u8a08\u4fe1\u606f\u3002<\/p>\n<h2 id=\"mssql%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8-daqaBLXeqZ\">MSSQL\u67e5\u8a62\u7684\u5be6\u969b\u61c9\u7528<\/h2>\n<p>MSSQL\u67e5\u8a62\u5728\u5404\u7a2e\u696d\u52d9\u5834\u666f\u4e2d\u90fd\u5177\u6709\u91cd\u8981\u7684\u61c9\u7528\u50f9\u503c\u3002\u4f8b\u5982\uff0c\u5728\u96fb\u5b50\u5546\u52d9\u5e73\u53f0\u4e2d\uff0c\u5546\u5bb6\u53ef\u4ee5\u4f7f\u7528MSSQL\u67e5\u8a62\u4f86\u5206\u6790\u92b7\u552e\u6578\u64da\uff0c\u4e86\u89e3\u54ea\u4e9b\u7522\u54c1\u6700\u53d7\u6b61\u8fce\uff0c\u5f9e\u800c\u5236\u5b9a\u66f4\u6709\u6548\u7684\u71df\u92b7\u7b56\u7565\u3002\u6b64\u5916\uff0c\u91d1\u878d\u6a5f\u69cb\u53ef\u4ee5\u5229\u7528MSSQL\u67e5\u8a62\u4f86\u76e3\u63a7\u4ea4\u6613\u6d3b\u52d5\uff0c\u53ca\u6642\u767c\u73fe\u53ef\u7591\u884c\u70ba\u3002<\/p>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u5be6\u969b\u7684\u67e5\u8a62\u793a\u4f8b\uff0c\u8a72\u67e5\u8a62\u7528\u65bc\u5f9e\u92b7\u552e\u6578\u64da\u8868\u4e2d\u63d0\u53d6\u904e\u53bb\u4e00\u500b\u6708\u7684\u92b7\u552e\u7e3d\u984d\uff1a<\/p>\n<pre><code>SELECT SUM(SaleAmount) AS TotalSales FROM Sales WHERE SaleDate &gt;= DATEADD(MONTH, -1, GETDATE());<\/code><\/pre>\n<h2 id=\"%e5%84%aa%e5%8c%96mssql%e6%9f%a5%e8%a9%a2%e6%80%a7%e8%83%bd-daqaBLXeqZ\">\u512a\u5316MSSQL\u67e5\u8a62\u6027\u80fd<\/h2>\n<p>\u70ba\u4e86\u63d0\u9ad8MSSQL\u67e5\u8a62\u7684\u6027\u80fd\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u63a1\u53d6\u4ee5\u4e0b\u5e7e\u500b\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u4f7f\u7528\u7d22\u5f15\uff1a<\/strong>\u70ba\u5e38\u7528\u7684\u67e5\u8a62\u5217\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u67e5\u8a62\u901f\u5ea6\u3002<\/li>\n<li><strong>\u907f\u514dSELECT *\uff1a<\/strong>\u50c5\u9078\u64c7\u9700\u8981\u7684\u5217\uff0c\u6e1b\u5c11\u6578\u64da\u50b3\u8f38\u91cf\u3002<\/li>\n<li><strong>\u4f7f\u7528JOIN\u800c\u975e\u5b50\u67e5\u8a62\uff1a<\/strong>\u5728\u591a\u8868\u67e5\u8a62\u4e2d\uff0c\u4f7f\u7528JOIN\u901a\u5e38\u6bd4\u5b50\u67e5\u8a62\u66f4\u9ad8\u6548\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-daqaBLXeqZ\">\u7d50\u8ad6<\/h2>\n<p>MSSQL\u67e5\u8a62\u4f5c\u70ba\u4e00\u7a2e\u5f37\u5927\u7684\u6578\u64da\u5eab\u641c\u7d22\u5de5\u5177\uff0c\u70ba\u7528\u6236\u63d0\u4f9b\u4e86\u9748\u6d3b\u4e14\u9ad8\u6548\u7684\u6578\u64da\u6aa2\u7d22\u65b9\u5f0f\u3002\u7121\u8ad6\u662f\u5728\u5546\u696d\u5206\u6790\u3001\u6578\u64da\u6316\u6398\u9084\u662f\u65e5\u5e38\u6578\u64da\u7ba1\u7406\u4e2d\uff0c\u638c\u63e1MSSQL\u67e5\u8a62\u7684\u57fa\u672c\u8a9e\u6cd5\u548c\u6700\u4f73\u5be6\u8e10\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u5c0d\u65bc\u9ad8\u6548\u67e5\u8a62\u7684\u9700\u6c42\u5c07\u6703\u8d8a\u4f86\u8d8a\u5927\uff0c\u9019\u4f7f\u5f97MSSQL\u67e5\u8a62\u7684\u5b78\u7fd2\u548c\u61c9\u7528\u8b8a\u5f97\u66f4\u52a0\u91cd\u8981\u3002<\/p>\n<p>\u5982\u679c\u60a8\u5c0d\u65bc\u5982\u4f55\u5728\u60a8\u7684\u696d\u52d9\u4e2d\u6709\u6548\u5229\u7528MSSQL\u67e5\u8a62\u6709\u8208\u8da3\uff0c\u6216\u8005\u60f3\u8981\u4e86\u89e3\u66f4\u591a\u95dc\u65bc<em><a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a><\/em>\u548c<em><a href=\"https:\/\/server.hk\">\u96f2\u4f3a\u670d\u5668<\/a><\/em>\u7684\u8cc7\u8a0a\uff0c\u6b61\u8fce\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u8cc7\u6e90\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MSSQL\u67e5\u8a62\uff0c\u5f37\u5927\u7684\u6578\u64da\u5eab\u641c\u7d22\u5de5\u5177\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u6548\u7387\uff0c\u7c21\u5316\u67e5\u8a62\u904e\u7a0b\uff0c\u52a9\u60a8\u5feb\u901f\u7372\u53d6\u6240\u9700\u4fe1\u606f\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-64921","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64921","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=64921"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64921\/revisions"}],"predecessor-version":[{"id":64922,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/64921\/revisions\/64922"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=64921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=64921"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=64921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}