{"id":195939,"date":"2024-11-13T19:11:19","date_gmt":"2024-11-13T11:11:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/195939\/"},"modified":"2024-11-13T19:11:20","modified_gmt":"2024-11-13T11:11:20","slug":"%e6%80%8e%e6%a8%a3%e4%bd%bf%e7%94%a8sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b5%8c%e5%a5%97%e5%ad%90%e6%9f%a5%e8%a9%a2","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/195939\/","title":{"rendered":"\u600e\u6a23\u4f7f\u7528SQL Server\u6578\u64da\u5eab\u5d4c\u5957\u5b50\u67e5\u8a62"},"content":{"rendered":"<h1 id=\"%e6%80%8e%e6%a8%a3%e4%bd%bf%e7%94%a8sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b5%8c%e5%a5%97%e5%ad%90%e6%9f%a5%e8%a9%a2-MeemYsoVve\">\u600e\u6a23\u4f7f\u7528SQL Server\u6578\u64da\u5eab\u5d4c\u5957\u5b50\u67e5\u8a62<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cSQL Server\u662f\u4e00\u500b\u5f37\u5927\u7684\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u67e5\u8a62\u6578\u64da\u3002\u5d4c\u5957\u5b50\u67e5\u8a62\u662fSQL\u4e2d\u4e00\u7a2e\u91cd\u8981\u7684\u67e5\u8a62\u6280\u8853\uff0c\u80fd\u5920\u8b93\u7528\u6236\u5728\u4e00\u500b\u67e5\u8a62\u4e2d\u5d4c\u5165\u53e6\u4e00\u500b\u67e5\u8a62\uff0c\u5f9e\u800c\u5be6\u73fe\u66f4\u8907\u96dc\u7684\u6578\u64da\u6aa2\u7d22\u9700\u6c42\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728SQL Server\u4e2d\u4f7f\u7528\u5d4c\u5957\u5b50\u67e5\u8a62\uff0c\u4e26\u63d0\u4f9b\u76f8\u95dc\u7684\u793a\u4f8b\u548c\u4ee3\u78bc\u7247\u6bb5\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e5%b5%8c%e5%a5%97%e5%ad%90%e6%9f%a5%e8%a9%a2-MeemYsoVve\">\u4ec0\u9ebc\u662f\u5d4c\u5957\u5b50\u67e5\u8a62<\/h2>\n<p>\u5d4c\u5957\u5b50\u67e5\u8a62\u662f\u6307\u5728\u4e00\u500bSQL\u67e5\u8a62\u4e2d\u5305\u542b\u53e6\u4e00\u500b\u67e5\u8a62\u3002\u9019\u7a2e\u67e5\u8a62\u53ef\u4ee5\u7528\u65bc\u591a\u7a2e\u60c5\u6cc1\uff0c\u4f8b\u5982\u904e\u6ffe\u6578\u64da\u3001\u8a08\u7b97\u805a\u5408\u503c\u6216\u5f9e\u591a\u500b\u8868\u4e2d\u6aa2\u7d22\u6578\u64da\u3002\u5d4c\u5957\u5b50\u67e5\u8a62\u901a\u5e38\u5206\u70ba\u5169\u7a2e\u985e\u578b\uff1a<\/p>\n<ul>\n<li><strong>\u6a19\u91cf\u5b50\u67e5\u8a62\uff1a<\/strong>\u8fd4\u56de\u55ae\u4e00\u503c\u7684\u5b50\u67e5\u8a62\u3002<\/li>\n<li><strong>\u8868\u5b50\u67e5\u8a62\uff1a<\/strong>\u8fd4\u56de\u591a\u884c\u6216\u591a\u5217\u7684\u5b50\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%b5%8c%e5%a5%97%e5%ad%90%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9f%ba%e6%9c%ac%e8%aa%9e%e6%b3%95-MeemYsoVve\">\u5d4c\u5957\u5b50\u67e5\u8a62\u7684\u57fa\u672c\u8a9e\u6cd5<\/h2>\n<p>\u5d4c\u5957\u5b50\u67e5\u8a62\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>\nSELECT column1, column2, ...\nFROM table1\nWHERE column3 = (SELECT column3 FROM table2 WHERE condition);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u5916\u90e8\u67e5\u8a62\u5f9etable1\u4e2d\u9078\u64c7\u6578\u64da\uff0c\u800c\u5167\u90e8\u67e5\u8a62\u5247\u5f9etable2\u4e2d\u9078\u64c7\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684column3\u503c\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e5%b5%8c%e5%a5%97%e5%ad%90%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%af%a6%e9%9a%9b%e7%a4%ba%e4%be%8b-MeemYsoVve\">\u4f7f\u7528\u5d4c\u5957\u5b50\u67e5\u8a62\u7684\u5be6\u969b\u793a\u4f8b<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528\u5d4c\u5957\u5b50\u67e5\u8a62\u7684\u5be6\u969b\u793a\u4f8b\u3002\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<code>Employees<\/code>\u548c<code>Departments<\/code>\u3002\u6211\u5011\u5e0c\u671b\u67e5\u8a62\u6240\u6709\u5728\u7279\u5b9a\u90e8\u9580\u5de5\u4f5c\u7684\u54e1\u5de5\u3002<\/p>\n<pre><code>\nSELECT EmployeeName\nFROM Employees\nWHERE DepartmentID = (SELECT DepartmentID FROM Departments WHERE DepartmentName = 'Sales');\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u67e5\u8a62\u4e2d\uff0c\u5167\u90e8\u67e5\u8a62\u6703\u8fd4\u56de\u90e8\u9580\u540d\u7a31\u70ba&#8217;Sales&#8217;\u7684\u90e8\u9580ID\uff0c\u800c\u5916\u90e8\u67e5\u8a62\u5247\u6703\u6839\u64da\u9019\u500bID\u6aa2\u7d22\u6240\u6709\u5728\u8a72\u90e8\u9580\u5de5\u4f5c\u7684\u54e1\u5de5\u59d3\u540d\u3002<\/p>\n<h2 id=\"%e5%b5%8c%e5%a5%97%e5%ad%90%e6%9f%a5%e8%a9%a2%e7%9a%84%e6%80%a7%e8%83%bd%e8%80%83%e9%87%8f-MeemYsoVve\">\u5d4c\u5957\u5b50\u67e5\u8a62\u7684\u6027\u80fd\u8003\u91cf<\/h2>\n<p>\u96d6\u7136\u5d4c\u5957\u5b50\u67e5\u8a62\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\u975e\u5e38\u6709\u7528\uff0c\u4f46\u5b83\u5011\u53ef\u80fd\u6703\u5f71\u97ff\u67e5\u8a62\u6027\u80fd\u3002\u7279\u5225\u662f\u7576\u5167\u90e8\u67e5\u8a62\u8fd4\u56de\u5927\u91cf\u6578\u64da\u6642\uff0c\u53ef\u80fd\u6703\u5c0e\u81f4\u6027\u80fd\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528\u5d4c\u5957\u5b50\u67e5\u8a62\u6642\uff0c\u5efa\u8b70\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u76e1\u91cf\u4f7f\u7528\u6a19\u91cf\u5b50\u67e5\u8a62\uff0c\u56e0\u70ba\u5b83\u5011\u901a\u5e38\u6bd4\u8868\u5b50\u67e5\u8a62\u66f4\u9ad8\u6548\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528JOIN\u64cd\u4f5c\u4f86\u66ff\u4ee3\u5d4c\u5957\u5b50\u67e5\u8a62\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li>\u5728\u5927\u578b\u6578\u64da\u96c6\u4e0a\u6e2c\u8a66\u67e5\u8a62\u6027\u80fd\uff0c\u78ba\u4fdd\u67e5\u8a62\u7684\u57f7\u884c\u6642\u9593\u5728\u53ef\u63a5\u53d7\u7bc4\u570d\u5167\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b5%90%e8%ab%96-MeemYsoVve\">\u7d50\u8ad6<\/h2>\n<p>\u5d4c\u5957\u5b50\u67e5\u8a62\u662fSQL Server\u4e2d\u4e00\u7a2e\u5f37\u5927\u7684\u67e5\u8a62\u5de5\u5177\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5be6\u73fe\u8907\u96dc\u7684\u6578\u64da\u6aa2\u7d22\u9700\u6c42\u3002\u901a\u904e\u5408\u7406\u4f7f\u7528\u5d4c\u5957\u5b50\u67e5\u8a62\uff0c\u4e26\u8003\u616e\u6027\u80fd\u512a\u5316\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u66f4\u9ad8\u6548\u5730\u7ba1\u7406\u548c\u67e5\u8a62\u6578\u64da\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u7528\u6236\uff0c\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u81f3\u95dc\u91cd\u8981\u3002\u82e5\u60a8\u5c0d\u65bcVPS\u6216\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u611f\u8208\u8da3\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff1a<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u548c<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u7684\u9078\u64c7\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728SQL Server\u4e2d\u4f7f\u7528\u5d4c\u5957\u5b50\u67e5\u8a62\uff0c\u63d0\u5347\u6578\u64da\u67e5\u8a62\u6548\u7387\uff0c\u7c21\u5316\u8907\u96dc\u6578\u64da\u64cd\u4f5c\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-195939","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195939","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=195939"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195939\/revisions"}],"predecessor-version":[{"id":195940,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/195939\/revisions\/195940"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=195939"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=195939"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=195939"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}