{"id":139374,"date":"2024-10-31T18:32:18","date_gmt":"2024-10-31T10:32:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/139374\/"},"modified":"2024-10-31T18:32:18","modified_gmt":"2024-10-31T10:32:18","slug":"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e5%8c%af%e7%b8%bd%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%95%8f%e9%a1%8c%e8%a7%a3%e6%b1%ba","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/139374\/","title":{"rendered":"SQL Server\u6578\u64da\u5eab\u591a\u8868\u95dc\u806f\u532f\u7e3d\u67e5\u8a62\u7684\u554f\u984c\u89e3\u6c7a"},"content":{"rendered":"<h1 id=\"sql-server%e6%95%b8%e6%93%9a%e5%ba%ab%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e5%8c%af%e7%b8%bd%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%95%8f%e9%a1%8c%e8%a7%a3%e6%b1%ba-kYaJJgseiP\">SQL Server\u6578\u64da\u5eab\u591a\u8868\u95dc\u806f\u532f\u7e3d\u67e5\u8a62\u7684\u554f\u984c\u89e3\u6c7a<\/h1>\n<p>\u5728\u73fe\u4ee3\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cSQL Server\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u696d\u52d9\u5834\u666f\u3002\u591a\u8868\u95dc\u806f\u67e5\u8a62\u662fSQL Server\u4e2d\u4e00\u500b\u91cd\u8981\u7684\u529f\u80fd\uff0c\u80fd\u5920\u5e6b\u52a9\u7528\u6236\u5f9e\u591a\u500b\u8868\u4e2d\u63d0\u53d6\u548c\u532f\u7e3d\u6578\u64da\u3002\u7136\u800c\uff0c\u9019\u985e\u67e5\u8a62\u5728\u5be6\u969b\u64cd\u4f5c\u4e2d\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b\u6311\u6230\u3002\u672c\u6587\u5c07\u63a2\u8a0eSQL Server\u6578\u64da\u5eab\u4e2d\u591a\u8868\u95dc\u806f\u532f\u7e3d\u67e5\u8a62\u7684\u5e38\u898b\u554f\u984c\u53ca\u5176\u89e3\u6c7a\u65b9\u6848\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e6%9f%a5%e8%a9%a2%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%a6%82%e5%bf%b5-kYaJJgseiP\">\u591a\u8868\u95dc\u806f\u67e5\u8a62\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u591a\u8868\u95dc\u806f\u67e5\u8a62\u662f\u6307\u5728\u4e00\u500bSQL\u67e5\u8a62\u4e2d\u540c\u6642\u67e5\u8a62\u591a\u500b\u8868\u7684\u6578\u64da\u3002\u9019\u901a\u5e38\u901a\u904e\u4f7f\u7528JOIN\u8a9e\u53e5\u4f86\u5be6\u73fe\u3002\u6839\u64da\u9700\u8981\u95dc\u806f\u7684\u8868\u7684\u6578\u91cf\u548c\u985e\u578b\uff0cJOIN\u53ef\u4ee5\u5206\u70ba\u5167\u90e8\u9023\u63a5\uff08INNER JOIN\uff09\u3001\u5916\u90e8\u9023\u63a5\uff08LEFT JOIN\u3001RIGHT JOIN\uff09\u548c\u5168\u5916\u90e8\u9023\u63a5\uff08FULL OUTER JOIN\uff09\u7b49\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b%ef%bc%9a%e5%9f%ba%e6%9c%ac%e7%9a%84%e5%a4%9a%e8%a1%a8%e9%97%9c%e8%81%af%e6%9f%a5%e8%a9%a2-kYaJJgseiP\">\u793a\u4f8b\uff1a\u57fa\u672c\u7684\u591a\u8868\u95dc\u806f\u67e5\u8a62<\/h3>\n<pre><code>SELECT \n    a.CustomerName, \n    b.OrderID, \n    b.OrderDate \nFROM \n    Customers a \nINNER JOIN \n    Orders b ON a.CustomerID = b.CustomerID;<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5f9eCustomers\u8868\u548cOrders\u8868\u4e2d\u63d0\u53d6\u5ba2\u6236\u540d\u7a31\u53ca\u5176\u8a02\u55ae\u4fe1\u606f\u3002\u9019\u6a23\u7684\u67e5\u8a62\u80fd\u5920\u6709\u6548\u5730\u5c07\u5169\u500b\u8868\u7684\u6578\u64da\u95dc\u806f\u8d77\u4f86\u3002<\/p>\n<h2 id=\"%e5%b8%b8%e8%a6%8b%e5%95%8f%e9%a1%8c%e5%8f%8a%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88-kYaJJgseiP\">\u5e38\u898b\u554f\u984c\u53ca\u89e3\u6c7a\u65b9\u6848<\/h2>\n<h3 id=\"1-%e6%80%a7%e8%83%bd%e5%95%8f%e9%a1%8c-kYaJJgseiP\">1. \u6027\u80fd\u554f\u984c<\/h3>\n<p>\u5728\u9032\u884c\u591a\u8868\u95dc\u806f\u67e5\u8a62\u6642\uff0c\u6027\u80fd\u554f\u984c\u662f\u6700\u5e38\u898b\u7684\u6311\u6230\u4e4b\u4e00\u3002\u7576\u67e5\u8a62\u6d89\u53ca\u5927\u91cf\u6578\u64da\u6642\uff0c\u57f7\u884c\u901f\u5ea6\u53ef\u80fd\u6703\u8b8a\u6162\u3002\u9019\u901a\u5e38\u662f\u7531\u65bc\u7f3a\u4e4f\u9069\u7576\u7684\u7d22\u5f15\u6216\u4e0d\u5408\u7406\u7684\u67e5\u8a62\u8a2d\u8a08\u6240\u81f4\u3002<\/p>\n<h4 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%ef%bc%9a-kYaJJgseiP\">\u89e3\u6c7a\u65b9\u6848\uff1a<\/h4>\n<ul>\n<li>\u78ba\u4fdd\u5728\u95dc\u806f\u5b57\u6bb5\u4e0a\u5efa\u7acb\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li>\u4f7f\u7528EXPLAIN\u8a9e\u53e5\u5206\u6790\u67e5\u8a62\u8a08\u5283\uff0c\u627e\u51fa\u6027\u80fd\u74f6\u9838\u3002<\/li>\n<li>\u8003\u616e\u4f7f\u7528\u8996\u5716\u6216\u7269\u5316\u8996\u5716\u4f86\u7c21\u5316\u8907\u96dc\u67e5\u8a62\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e6%95%b8%e6%93%9a%e4%b8%8d%e4%b8%80%e8%87%b4%e6%80%a7-kYaJJgseiP\">2. \u6578\u64da\u4e0d\u4e00\u81f4\u6027<\/h3>\n<p>\u5728\u591a\u8868\u95dc\u806f\u67e5\u8a62\u4e2d\uff0c\u6578\u64da\u4e0d\u4e00\u81f4\u6027\u53ef\u80fd\u6703\u5c0e\u81f4\u67e5\u8a62\u7d50\u679c\u4e0d\u6b63\u78ba\u3002\u4f8b\u5982\uff0c\u7576\u67d0\u500b\u8868\u4e2d\u7684\u6578\u64da\u88ab\u522a\u9664\u6216\u66f4\u65b0\u6642\uff0c\u5176\u4ed6\u8868\u4e2d\u7684\u76f8\u95dc\u6578\u64da\u53ef\u80fd\u4e0d\u518d\u5339\u914d\u3002<\/p>\n<h4 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%ef%bc%9a-kYaJJgseiP\">\u89e3\u6c7a\u65b9\u6848\uff1a<\/h4>\n<ul>\n<li>\u4f7f\u7528\u4e8b\u52d9\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\uff0c\u7279\u5225\u662f\u5728\u9032\u884c\u591a\u8868\u66f4\u65b0\u6642\u3002<\/li>\n<li>\u5b9a\u671f\u6aa2\u67e5\u6578\u64da\u5b8c\u6574\u6027\uff0c\u4f7f\u7528\u7d04\u675f\u689d\u4ef6\u4f86\u9632\u6b62\u4e0d\u4e00\u81f4\u7684\u6578\u64da\u9032\u5165\u6578\u64da\u5eab\u3002<\/li>\n<\/ul>\n<h3 id=\"3-%e8%a4%87%e9%9b%9c%e7%9a%84%e6%9f%a5%e8%a9%a2%e9%82%8f%e8%bc%af-kYaJJgseiP\">3. \u8907\u96dc\u7684\u67e5\u8a62\u908f\u8f2f<\/h3>\n<p>\u96a8\u8457\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u67e5\u8a62\u908f\u8f2f\u53ef\u80fd\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u8907\u96dc\uff0c\u9019\u6703\u4f7f\u5f97\u67e5\u8a62\u96e3\u4ee5\u7dad\u8b77\u548c\u7406\u89e3\u3002<\/p>\n<h4 id=\"%e8%a7%a3%e6%b1%ba%e6%96%b9%e6%a1%88%ef%bc%9a-kYaJJgseiP\">\u89e3\u6c7a\u65b9\u6848\uff1a<\/h4>\n<ul>\n<li>\u5c07\u8907\u96dc\u7684\u67e5\u8a62\u62c6\u5206\u70ba\u591a\u500b\u7c21\u55ae\u7684\u67e5\u8a62\uff0c\u7136\u5f8c\u4f7f\u7528\u81e8\u6642\u8868\u6216CTE\uff08\u516c\u7528\u8868\u8868\u9054\u5f0f\uff09\u4f86\u7d44\u5408\u7d50\u679c\u3002<\/li>\n<li>\u70ba\u67e5\u8a62\u6dfb\u52a0\u8a3b\u91cb\uff0c\u5e6b\u52a9\u672a\u4f86\u7684\u7dad\u8b77\u8005\u7406\u89e3\u67e5\u8a62\u908f\u8f2f\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kYaJJgseiP\">\u7e3d\u7d50<\/h2>\n<p>\u5728SQL Server\u4e2d\u9032\u884c\u591a\u8868\u95dc\u806f\u532f\u7e3d\u67e5\u8a62\u6642\uff0c\u6027\u80fd\u3001\u6578\u64da\u4e00\u81f4\u6027\u548c\u67e5\u8a62\u908f\u8f2f\u7684\u8907\u96dc\u6027\u662f\u9700\u8981\u7279\u5225\u6ce8\u610f\u7684\u554f\u984c\u3002\u901a\u904e\u9069\u7576\u7684\u7d22\u5f15\u3001\u4e8b\u52d9\u7ba1\u7406\u548c\u67e5\u8a62\u91cd\u69cb\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u6c7a\u9019\u4e9b\u554f\u984c\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u7684\u6548\u7387\u548c\u6e96\u78ba\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6548\u6578\u64da\u8655\u7406\u7684\u4f01\u696d\u4f86\u8aaa\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\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u89e3\u6c7aSQL Server\u6578\u64da\u5eab\u4e2d\u591a\u8868\u95dc\u806f\u532f\u7e3d\u67e5\u8a62\u7684\u5e38\u898b\u554f\u984c\uff0c\u63d0\u5347\u67e5\u8a62\u6548\u7387\u8207\u6e96\u78ba\u6027\uff0c\u512a\u5316\u6578\u64da\u5206\u6790\u6d41\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-139374","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139374","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=139374"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139374\/revisions"}],"predecessor-version":[{"id":139375,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/139374\/revisions\/139375"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=139374"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=139374"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=139374"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}