{"id":193447,"date":"2024-11-12T22:15:21","date_gmt":"2024-11-12T14:15:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/193447\/"},"modified":"2024-11-12T22:15:22","modified_gmt":"2024-11-12T14:15:22","slug":"%e5%ad%b8%e7%bf%92mysql%ef%bc%9a%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a2%ba%e8%a8%ad%e7%bd%ae%e8%a1%a8%e6%a0%bc%e4%b8%bb%e9%8d%b5%ef%bc%9f-mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%ad%e7%bd%ae%e4%b8%bb","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/193447\/","title":{"rendered":"\u5b78\u7fd2MySQL\uff1a\u5982\u4f55\u6b63\u78ba\u8a2d\u7f6e\u8868\u683c\u4e3b\u9375\uff1f (mysql\u6578\u64da\u5eab\u8a2d\u7f6e\u4e3b\u9375)"},"content":{"rendered":"<h1 id=\"%e5%ad%b8%e7%bf%92mysql%ef%bc%9a%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a2%ba%e8%a8%ad%e7%bd%ae%e8%a1%a8%e6%a0%bc%e4%b8%bb%e9%8d%b5%ef%bc%9f-aOltKdtXpG\">\u5b78\u7fd2MySQL\uff1a\u5982\u4f55\u6b63\u78ba\u8a2d\u7f6e\u8868\u683c\u4e3b\u9375\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u4e3b\u9375\u662f\u6bcf\u500b\u8868\u683c\u4e2d\u6700\u91cd\u8981\u7684\u5143\u7d20\u4e4b\u4e00\u3002\u5b83\u4e0d\u50c5\u7528\u65bc\u552f\u4e00\u6a19\u8b58\u6bcf\u4e00\u884c\u6578\u64da\uff0c\u9084\u5728\u6578\u64da\u5b8c\u6574\u6027\u548c\u67e5\u8a62\u6027\u80fd\u65b9\u9762\u767c\u63ee\u8457\u95dc\u9375\u4f5c\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e\u5982\u4f55\u5728MySQL\u4e2d\u6b63\u78ba\u8a2d\u7f6e\u8868\u683c\u4e3b\u9375\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u5efa\u8b70\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%bb%e9%8d%b5%ef%bc%9f-aOltKdtXpG\">\u4ec0\u9ebc\u662f\u4e3b\u9375\uff1f<\/h2>\n<p>\u4e3b\u9375\u662f\u4e00\u500b\u6216\u591a\u500b\u5217\u7684\u7d44\u5408\uff0c\u5176\u503c\u5728\u8868\u683c\u4e2d\u5fc5\u9808\u662f\u552f\u4e00\u7684\uff0c\u4e26\u4e14\u4e0d\u80fd\u70ba\u7a7a\u3002\u4e3b\u9375\u7684\u4e3b\u8981\u529f\u80fd\u662f\u78ba\u4fdd\u6bcf\u4e00\u884c\u6578\u64da\u7684\u552f\u4e00\u6027\uff0c\u9019\u5c0d\u65bc\u6578\u64da\u7684\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002\u7576\u8a2d\u7f6e\u4e3b\u9375\u6642\uff0cMySQL\u6703\u81ea\u52d5\u70ba\u8a72\u5217\u5275\u5efa\u7d22\u5f15\uff0c\u9019\u6a23\u53ef\u4ee5\u52a0\u5feb\u67e5\u8a62\u901f\u5ea6\u3002<\/p>\n<h2 id=\"%e8%a8%ad%e7%bd%ae%e4%b8%bb%e9%8d%b5%e7%9a%84%e5%9f%ba%e6%9c%ac%e6%ad%a5%e9%a9%9f-aOltKdtXpG\">\u8a2d\u7f6e\u4e3b\u9375\u7684\u57fa\u672c\u6b65\u9a5f<\/h2>\n<p>\u5728MySQL\u4e2d\u8a2d\u7f6e\u4e3b\u9375\u53ef\u4ee5\u5728\u5275\u5efa\u8868\u683c\u6642\u9032\u884c\uff0c\u4e5f\u53ef\u4ee5\u5728\u8868\u683c\u5df2\u7d93\u5b58\u5728\u7684\u60c5\u6cc1\u4e0b\u9032\u884c\u4fee\u6539\u3002\u4ee5\u4e0b\u662f\u5169\u7a2e\u5e38\u898b\u7684\u65b9\u6cd5\uff1a<\/p>\n<h3 id=\"1-%e5%9c%a8%e5%89%b5%e5%bb%ba%e8%a1%a8%e6%a0%bc%e6%99%82%e8%a8%ad%e7%bd%ae%e4%b8%bb%e9%8d%b5-aOltKdtXpG\">1. \u5728\u5275\u5efa\u8868\u683c\u6642\u8a2d\u7f6e\u4e3b\u9375<\/h3>\n<pre><code>CREATE TABLE users (\n    id INT NOT NULL AUTO_INCREMENT,\n    username VARCHAR(50) NOT NULL,\n    email VARCHAR(100) NOT NULL,\n    PRIMARY KEY (id)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5275\u5efa\u4e86\u4e00\u500b\u540d\u70ba <code>users<\/code> \u7684\u8868\u683c\uff0c\u5176\u4e2d <code>id<\/code> \u5217\u88ab\u8a2d\u7f6e\u70ba\u4e3b\u9375\u3002\u9019\u610f\u5473\u8457\u6bcf\u500b\u7528\u6236\u90fd\u6703\u6709\u4e00\u500b\u552f\u4e00\u7684\u8b58\u5225\u78bc\uff0c\u4e26\u4e14\u9019\u500b\u8b58\u5225\u78bc\u6703\u81ea\u52d5\u905e\u589e\u3002<\/p>\n<h3 id=\"2-%e5%9c%a8%e5%b7%b2%e5%ad%98%e5%9c%a8%e7%9a%84%e8%a1%a8%e6%a0%bc%e4%b8%ad%e6%b7%bb%e5%8a%a0%e4%b8%bb%e9%8d%b5-aOltKdtXpG\">2. \u5728\u5df2\u5b58\u5728\u7684\u8868\u683c\u4e2d\u6dfb\u52a0\u4e3b\u9375<\/h3>\n<pre><code>ALTER TABLE users\nADD PRIMARY KEY (id);<\/code><\/pre>\n<p>\u5982\u679c\u8868\u683c\u5df2\u7d93\u5b58\u5728\uff0c\u4f46\u5c1a\u672a\u8a2d\u7f6e\u4e3b\u9375\uff0c\u53ef\u4ee5\u4f7f\u7528 <code>ALTER TABLE<\/code> \u8a9e\u53e5\u4f86\u6dfb\u52a0\u4e3b\u9375\u3002\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c\u6211\u5011\u5c07 <code>id<\/code> \u5217\u8a2d\u7f6e\u70ba\u4e3b\u9375\u3002<\/p>\n<h2 id=\"%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e4%b8%bb%e9%8d%b5-aOltKdtXpG\">\u9078\u64c7\u5408\u9069\u7684\u4e3b\u9375<\/h2>\n<p>\u9078\u64c7\u4e3b\u9375\u6642\uff0c\u6709\u5e7e\u500b\u56e0\u7d20\u9700\u8981\u8003\u616e\uff1a<\/p>\n<ul>\n<li><strong>\u552f\u4e00\u6027\uff1a<\/strong>\u4e3b\u9375\u7684\u503c\u5fc5\u9808\u662f\u552f\u4e00\u7684\uff0c\u9019\u6a23\u624d\u80fd\u6b63\u78ba\u8b58\u5225\u6bcf\u4e00\u884c\u6578\u64da\u3002<\/li>\n<li><strong>\u7a69\u5b9a\u6027\uff1a<\/strong>\u4e3b\u9375\u7684\u503c\u61c9\u8a72\u5728\u6578\u64da\u7684\u751f\u547d\u5468\u671f\u5167\u4fdd\u6301\u4e0d\u8b8a\uff0c\u907f\u514d\u983b\u7e41\u66f4\u65b0\u3002<\/li>\n<li><strong>\u7c21\u55ae\u6027\uff1a<\/strong>\u76e1\u91cf\u9078\u64c7\u7c21\u55ae\u7684\u6578\u64da\u985e\u578b\u4f5c\u70ba\u4e3b\u9375\uff0c\u4f8b\u5982\u6574\u6578\u6216\u5b57\u7b26\u578b\uff0c\u9019\u6a23\u53ef\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%bd%bf%e7%94%a8%e8%a4%87%e5%90%88%e4%b8%bb%e9%8d%b5-aOltKdtXpG\">\u4f7f\u7528\u8907\u5408\u4e3b\u9375<\/h2>\n<p>\u5728\u67d0\u4e9b\u60c5\u6cc1\u4e0b\uff0c\u55ae\u4e00\u5217\u7121\u6cd5\u552f\u4e00\u6a19\u8b58\u4e00\u884c\u6578\u64da\uff0c\u9019\u6642\u53ef\u4ee5\u4f7f\u7528\u8907\u5408\u4e3b\u9375\u3002\u8907\u5408\u4e3b\u9375\u662f\u7531\u591a\u500b\u5217\u7d44\u6210\u7684\u4e3b\u9375\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE TABLE orders (\n    order_id INT NOT NULL,\n    product_id INT NOT NULL,\n    quantity INT NOT NULL,\n    PRIMARY KEY (order_id, product_id)\n);<\/code><\/pre>\n<p>\u5728\u9019\u500b\u4f8b\u5b50\u4e2d\uff0c<code>orders<\/code> \u8868\u683c\u7684\u4e3b\u9375\u7531 <code>order_id<\/code> \u548c <code>product_id<\/code> \u5169\u5217\u7d44\u6210\uff0c\u9019\u6a23\u53ef\u4ee5\u78ba\u4fdd\u6bcf\u500b\u8a02\u55ae\u4e2d\u6bcf\u500b\u7522\u54c1\u7684\u552f\u4e00\u6027\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-aOltKdtXpG\">\u7d50\u8ad6<\/h2>\n<p>\u6b63\u78ba\u8a2d\u7f6e\u4e3b\u9375\u5c0d\u65bc\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u5b8c\u6574\u6027\u81f3\u95dc\u91cd\u8981\u3002\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u61c9\u4ed4\u7d30\u8003\u616e\u4e3b\u9375\u7684\u9078\u64c7\u548c\u8a2d\u7f6e\u65b9\u5f0f\u3002\u7121\u8ad6\u662f\u4f7f\u7528\u55ae\u4e00\u4e3b\u9375\u9084\u662f\u8907\u5408\u4e3b\u9375\uff0c\u78ba\u4fdd\u5176\u552f\u4e00\u6027\u548c\u7a69\u5b9a\u6027\u90fd\u662f\u6210\u529f\u7684\u95dc\u9375\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u904b\u884c\u60a8\u7684MySQL\u6578\u64da\u5eab\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u4e0d\u540c\u9700\u6c42\u7684\u5ba2\u6236\u3002\u7121\u8ad6\u662f <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u9084\u662f\u5176\u4ed6\u670d\u52d9\uff0c\u6211\u5011\u90fd\u80fd\u70ba\u60a8\u63d0\u4f9b\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2MySQL\uff0c\u638c\u63e1\u5982\u4f55\u6b63\u78ba\u8a2d\u7f6e\u8868\u683c\u4e3b\u9375\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u67e5\u8a62\u6548\u7387\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u6280\u80fd\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-193447","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193447","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=193447"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193447\/revisions"}],"predecessor-version":[{"id":193448,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/193447\/revisions\/193448"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=193447"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=193447"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=193447"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}