{"id":153767,"date":"2024-11-02T10:11:17","date_gmt":"2024-11-02T02:11:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/153767\/"},"modified":"2024-11-02T10:11:18","modified_gmt":"2024-11-02T02:11:18","slug":"%e5%b8%b6%e6%82%a8%e4%ba%86%e8%a7%a3sql%e5%85%a7%e9%80%a3%e6%8e%a5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/153767\/","title":{"rendered":"\u5e36\u60a8\u4e86\u89e3SQL\u5167\u9023\u63a5"},"content":{"rendered":"<h1 id=\"%e5%b8%b6%e6%82%a8%e4%ba%86%e8%a7%a3sql%e5%85%a7%e9%80%a3%e6%8e%a5-kqdaZGVNDP\">\u5e36\u60a8\u4e86\u89e3SQL\u5167\u9023\u63a5<\/h1>\n<p>\u5728\u8cc7\u6599\u5eab\u7ba1\u7406\u7cfb\u7d71\u4e2d\uff0cSQL\uff08\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u67e5\u8a62\u548c\u64cd\u4f5c\u8cc7\u6599\u7684\u6a19\u6e96\u8a9e\u8a00\u3002\u5167\u9023\u63a5\uff08Inner Join\uff09\u662fSQL\u4e2d\u6700\u5e38\u7528\u7684\u9023\u63a5\u985e\u578b\u4e4b\u4e00\uff0c\u4e3b\u8981\u7528\u65bc\u5f9e\u5169\u500b\u6216\u591a\u500b\u8868\u4e2d\u9078\u53d6\u7b26\u5408\u7279\u5b9a\u689d\u4ef6\u7684\u8cc7\u6599\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5167\u9023\u63a5\u7684\u6982\u5ff5\u3001\u8a9e\u6cd5\u3001\u4f7f\u7528\u60c5\u5883\u53ca\u7bc4\u4f8b\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u91cd\u8981\u7684SQL\u529f\u80fd\u3002<\/p>\n<h2 id=\"%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e6%a6%82%e5%bf%b5-kqdaZGVNDP\">\u5167\u9023\u63a5\u7684\u6982\u5ff5<\/h2>\n<p>\u5167\u9023\u63a5\u662f\u6307\u5728\u67e5\u8a62\u4e2d\uff0c\u50c5\u8fd4\u56de\u5169\u500b\u6216\u591a\u500b\u8868\u4e2d\u7b26\u5408\u9023\u63a5\u689d\u4ef6\u7684\u8cc7\u6599\u884c\u3002\u9019\u610f\u5473\u8457\uff0c\u53ea\u6709\u7576\u5728\u6240\u6709\u53c3\u8207\u7684\u8868\u4e2d\u90fd\u80fd\u627e\u5230\u5339\u914d\u7684\u8cc7\u6599\u6642\uff0c\u8a72\u8cc7\u6599\u884c\u624d\u6703\u88ab\u5305\u542b\u5728\u7d50\u679c\u96c6\u4e2d\u3002\u5167\u9023\u63a5\u901a\u5e38\u7528\u65bc\u95dc\u806f\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u4fc2\uff0c\u4f8b\u5982\u5ba2\u6236\u548c\u8a02\u55ae\u4e4b\u9593\u7684\u95dc\u4fc2\u3002<\/p>\n<h2 id=\"%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e8%aa%9e%e6%b3%95-kqdaZGVNDP\">\u5167\u9023\u63a5\u7684\u8a9e\u6cd5<\/h2>\n<p>\u5167\u9023\u63a5\u7684\u57fa\u672c\u8a9e\u6cd5\u5982\u4e0b\uff1a<\/p>\n<pre><code>SELECT \u5217\u540d\nFROM \u88681\nINNER JOIN \u88682\nON \u88681.\u5217\u540d = \u88682.\u5217\u540d;<\/code><\/pre>\n<p>\u5728\u9019\u88e1\uff0c\u60a8\u9700\u8981\u66ff\u63db\u201c\u5217\u540d\u201d\u548c\u201c\u8868\u540d\u201d\u70ba\u5be6\u969b\u7684\u8cc7\u6599\u8868\u548c\u6b04\u4f4d\u540d\u7a31\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u5177\u9ad4\u7684\u7bc4\u4f8b\uff1a<\/p>\n<h3 id=\"%e7%af%84%e4%be%8b%ef%bc%9a%e5%ae%a2%e6%88%b6%e8%88%87%e8%a8%82%e5%96%ae%e7%9a%84%e5%85%a7%e9%80%a3%e6%8e%a5-kqdaZGVNDP\">\u7bc4\u4f8b\uff1a\u5ba2\u6236\u8207\u8a02\u55ae\u7684\u5167\u9023\u63a5<\/h3>\n<p>\u5047\u8a2d\u6211\u5011\u6709\u5169\u500b\u8868\uff1a<strong>Customers<\/strong>\uff08\u5ba2\u6236\uff09\u548c<strong>Orders<\/strong>\uff08\u8a02\u55ae\uff09\u3002<\/p>\n<ul>\n<li><strong>Customers<\/strong> \u8868\u5305\u542b\u4ee5\u4e0b\u6b04\u4f4d\uff1a\n<ul>\n<li>CustomerID<\/li>\n<li>CustomerName<\/li>\n<\/ul>\n<\/li>\n<li><strong>Orders<\/strong> \u8868\u5305\u542b\u4ee5\u4e0b\u6b04\u4f4d\uff1a\n<ul>\n<li>OrderID<\/li>\n<li>CustomerID<\/li>\n<li>OrderDate<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u5982\u679c\u6211\u5011\u60f3\u8981\u67e5\u8a62\u6240\u6709\u5ba2\u6236\u53ca\u5176\u8a02\u55ae\u7684\u8a73\u7d30\u8cc7\u8a0a\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u67e5\u8a62\uff1a<\/p>\n<pre><code>SELECT Customers.CustomerName, Orders.OrderID, Orders.OrderDate\nFROM Customers\nINNER JOIN Orders\nON Customers.CustomerID = Orders.CustomerID;<\/code><\/pre>\n<p>\u9019\u500b\u67e5\u8a62\u5c07\u8fd4\u56de\u6240\u6709\u6709\u8a02\u55ae\u7684\u5ba2\u6236\u53ca\u5176\u76f8\u61c9\u7684\u8a02\u55ae\u8cc7\u8a0a\u3002\u5982\u679c\u67d0\u500b\u5ba2\u6236\u6c92\u6709\u8a02\u55ae\uff0c\u5247\u8a72\u5ba2\u6236\u7684\u8cc7\u6599\u5c07\u4e0d\u6703\u51fa\u73fe\u5728\u7d50\u679c\u4e2d\u3002<\/p>\n<h2 id=\"%e5%85%a7%e9%80%a3%e6%8e%a5%e7%9a%84%e4%bd%bf%e7%94%a8%e6%83%85%e5%a2%83-kqdaZGVNDP\">\u5167\u9023\u63a5\u7684\u4f7f\u7528\u60c5\u5883<\/h2>\n<p>\u5167\u9023\u63a5\u5728\u8a31\u591a\u60c5\u6cc1\u4e0b\u90fd\u975e\u5e38\u6709\u7528\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u4f7f\u7528\u60c5\u5883\uff1a<\/p>\n<ul>\n<li><strong>\u5831\u544a\u751f\u6210\uff1a<\/strong>\u7576\u9700\u8981\u5f9e\u591a\u500b\u8868\u4e2d\u63d0\u53d6\u8cc7\u6599\u4ee5\u751f\u6210\u5831\u544a\u6642\uff0c\u5167\u9023\u63a5\u53ef\u4ee5\u5e6b\u52a9\u6574\u5408\u76f8\u95dc\u8cc7\u8a0a\u3002<\/li>\n<li><strong>\u8cc7\u6599\u5206\u6790\uff1a<\/strong>\u5728\u9032\u884c\u8cc7\u6599\u5206\u6790\u6642\uff0c\u5167\u9023\u63a5\u53ef\u4ee5\u7528\u4f86\u627e\u51fa\u4e0d\u540c\u8cc7\u6599\u8868\u4e4b\u9593\u7684\u95dc\u806f\u6027\u3002<\/li>\n<li><strong>\u6578\u64da\u6e05\u7406\uff1a<\/strong>\u5728\u6e05\u7406\u8cc7\u6599\u6642\uff0c\u5167\u9023\u63a5\u53ef\u4ee5\u5e6b\u52a9\u8b58\u5225\u548c\u522a\u9664\u4e0d\u5fc5\u8981\u7684\u8cc7\u6599\u884c\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-kqdaZGVNDP\">\u7e3d\u7d50<\/h2>\n<p>\u5167\u9023\u63a5\u662fSQL\u4e2d\u4e00\u500b\u5f37\u5927\u4e14\u9748\u6d3b\u7684\u529f\u80fd\uff0c\u80fd\u5920\u6709\u6548\u5730\u5f9e\u591a\u500b\u8cc7\u6599\u8868\u4e2d\u63d0\u53d6\u76f8\u95dc\u8cc7\u6599\u3002\u901a\u904e\u7406\u89e3\u5167\u9023\u63a5\u7684\u6982\u5ff5\u3001\u8a9e\u6cd5\u53ca\u5176\u4f7f\u7528\u60c5\u5883\uff0c\u60a8\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u9032\u884c\u8cc7\u6599\u67e5\u8a62\u548c\u5206\u6790\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u8cc7\u6599\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5f0f\u548c\u6578\u64da\u7ba1\u7406\u9700\u6c42\u3002\u7121\u8ad6\u662f\u5c0f\u578b\u4f01\u696d\u9084\u662f\u5927\u578b\u4f01\u696d\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">\u4f3a\u670d\u5668<\/a>\u90fd\u80fd\u63d0\u5347\u60a8\u7684\u696d\u52d9\u6548\u7387\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4e86\u89e3SQL\u5167\u9023\u63a5\u7684\u57fa\u672c\u6982\u5ff5\u3001\u7528\u6cd5\u53ca\u7bc4\u4f8b\uff0c\u638c\u63e1\u5982\u4f55\u6709\u6548\u5730\u67e5\u8a62\u591a\u500b\u8cc7\u6599\u8868\u4e2d\u7684\u76f8\u95dc\u6578\u64da\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-153767","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153767","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=153767"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153767\/revisions"}],"predecessor-version":[{"id":153768,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/153767\/revisions\/153768"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=153767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=153767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=153767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}