{"id":180004,"date":"2024-11-09T06:36:17","date_gmt":"2024-11-08T22:36:17","guid":{"rendered":"https:\/\/server.hk\/cnblog\/180004\/"},"modified":"2024-11-09T06:36:18","modified_gmt":"2024-11-08T22:36:18","slug":"%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a2%ba%e8%a8%ad%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%abcc1%e5%ad%97%e6%ae%b5-%e6%95%b8%e6%93%9a%e5%ba%abcc1%e5%ad%97%e6%ae%b5%e8%a8%ad%e7%bd%ae","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/180004\/","title":{"rendered":"\u5982\u4f55\u6b63\u78ba\u8a2d\u7f6e\u6578\u64da\u5eabcc1\u5b57\u6bb5 (\u6578\u64da\u5eabcc1\u5b57\u6bb5\u8a2d\u7f6e)"},"content":{"rendered":"<h1 id=\"%e5%a6%82%e4%bd%95%e6%ad%a3%e7%a2%ba%e8%a8%ad%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%abcc1%e5%ad%97%e6%ae%b5-%e6%95%b8%e6%93%9a%e5%ba%abcc1%e5%ad%97%e6%ae%b5%e8%a8%ad%e7%bd%ae-xmYRIeoZcA\">\u5982\u4f55\u6b63\u78ba\u8a2d\u7f6e\u6578\u64da\u5eabcc1\u5b57\u6bb5 (\u6578\u64da\u5eabcc1\u5b57\u6bb5\u8a2d\u7f6e)<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u5b57\u6bb5\u7684\u8a2d\u7f6e\u5c0d\u65bc\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002cc1\u5b57\u6bb5\u4f5c\u70ba\u4e00\u500b\u7279\u5b9a\u7684\u6578\u64da\u5eab\u5b57\u6bb5\uff0c\u901a\u5e38\u7528\u65bc\u5b58\u5132\u7279\u5b9a\u985e\u578b\u7684\u4fe1\u606f\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u6b63\u78ba\u8a2d\u7f6e\u6578\u64da\u5eab\u4e2d\u7684cc1\u5b57\u6bb5\uff0c\u5305\u62ec\u5176\u6578\u64da\u985e\u578b\u3001\u7d04\u675f\u689d\u4ef6\u53ca\u6700\u4f73\u5be6\u8e10\u3002<\/p>\n<h2 id=\"1-%e7%90%86%e8%a7%a3cc1%e5%ad%97%e6%ae%b5%e7%9a%84%e7%94%a8%e9%80%94-xmYRIeoZcA\">1. \u7406\u89e3cc1\u5b57\u6bb5\u7684\u7528\u9014<\/h2>\n<p>cc1\u5b57\u6bb5\u7684\u5177\u9ad4\u7528\u9014\u53ef\u80fd\u56e0\u61c9\u7528\u7a0b\u5e8f\u7684\u4e0d\u540c\u800c\u6709\u6240\u8b8a\u5316\u3002\u4e00\u822c\u4f86\u8aaa\uff0ccc1\u5b57\u6bb5\u53ef\u4ee5\u7528\u4f86\u5b58\u5132\u7528\u6236\u7684\u4fe1\u7528\u5361\u4fe1\u606f\u3001\u8a02\u55ae\u72c0\u614b\u6216\u5176\u4ed6\u95dc\u9375\u6578\u64da\u3002\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u9996\u5148\u9700\u8981\u660e\u78ba\u9019\u500b\u5b57\u6bb5\u7684\u7528\u9014\uff0c\u4ee5\u4fbf\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u548c\u7d04\u675f\u689d\u4ef6\u3002<\/p>\n<h2 id=\"2-%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-xmYRIeoZcA\">2. \u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>\u5728\u8a2d\u7f6ecc1\u5b57\u6bb5\u6642\uff0c\u9078\u64c7\u6b63\u78ba\u7684\u6578\u64da\u985e\u578b\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u6578\u64da\u985e\u578b\u53ca\u5176\u9069\u7528\u60c5\u6cc1\uff1a<\/p>\n<ul>\n<li><strong>VARCHAR(n)<\/strong>: \u5982\u679ccc1\u5b57\u6bb5\u9700\u8981\u5b58\u5132\u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982\u7528\u6236\u540d\u6216\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528VARCHAR\u985e\u578b\u3002n\u8868\u793a\u6700\u5927\u5b57\u7b26\u6578\u3002<\/li>\n<li><strong>INT<\/strong>: \u5982\u679ccc1\u5b57\u6bb5\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\uff0c\u4f8b\u5982\u7528\u6236ID\u6216\u8a02\u55ae\u7de8\u865f\uff0c\u5247\u61c9\u9078\u64c7INT\u985e\u578b\u3002<\/li>\n<li><strong>DECIMAL(m, d)<\/strong>: \u5982\u679ccc1\u5b57\u6bb5\u9700\u8981\u5b58\u5132\u7cbe\u78ba\u7684\u6578\u5b57\uff0c\u4f8b\u5982\u91d1\u984d\u6216\u767e\u5206\u6bd4\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528DECIMAL\u985e\u578b\uff0c\u5176\u4e2dm\u8868\u793a\u7e3d\u4f4d\u6578\uff0cd\u8868\u793a\u5c0f\u6578\u4f4d\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e8%a8%ad%e7%bd%ae%e7%b4%84%e6%9d%9f%e6%a2%9d%e4%bb%b6-xmYRIeoZcA\">3. \u8a2d\u7f6e\u7d04\u675f\u689d\u4ef6<\/h2>\n<p>\u70ba\u4e86\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\uff0c\u5c0dcc1\u5b57\u6bb5\u8a2d\u7f6e\u9069\u7576\u7684\u7d04\u675f\u689d\u4ef6\u662f\u5fc5\u8981\u7684\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u898b\u7684\u7d04\u675f\u689d\u4ef6\uff1a<\/p>\n<ul>\n<li><strong>NOT NULL<\/strong>: \u78ba\u4fddcc1\u5b57\u6bb5\u4e0d\u80fd\u70ba\u7a7a\uff0c\u9019\u5c0d\u65bc\u5fc5\u586b\u5b57\u6bb5\u5c24\u70ba\u91cd\u8981\u3002<\/li>\n<li><strong>UNIQUE<\/strong>: \u5982\u679ccc1\u5b57\u6bb5\u9700\u8981\u4fdd\u6301\u552f\u4e00\u6027\uff0c\u4f8b\u5982\u7528\u6236\u540d\u6216\u96fb\u5b50\u90f5\u4ef6\u5730\u5740\uff0c\u5247\u61c9\u8a2d\u7f6eUNIQUE\u7d04\u675f\u3002<\/li>\n<li><strong>CHECK<\/strong>: \u53ef\u4ee5\u4f7f\u7528CHECK\u7d04\u675f\u4f86\u9650\u5236cc1\u5b57\u6bb5\u7684\u503c\u7bc4\u570d\uff0c\u4f8b\u5982\u78ba\u4fdd\u5e74\u9f61\u5b57\u6bb5\u7684\u503c\u57280\u5230120\u4e4b\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e5%af%a6%e7%8f%be%e6%9c%80%e4%bd%b3%e5%af%a6%e8%b8%90-xmYRIeoZcA\">4. \u5be6\u73fe\u6700\u4f73\u5be6\u8e10<\/h2>\n<p>\u5728\u8a2d\u7f6ecc1\u5b57\u6bb5\u6642\uff0c\u9075\u5faa\u4e00\u4e9b\u6700\u4f73\u5be6\u8e10\u53ef\u4ee5\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\uff1a<\/p>\n<ul>\n<li><strong>\u547d\u540d\u898f\u5247<\/strong>: \u4f7f\u7528\u6e05\u6670\u4e14\u5177\u63cf\u8ff0\u6027\u7684\u540d\u7a31\u4f86\u547d\u540dcc1\u5b57\u6bb5\uff0c\u4ee5\u4fbf\u5176\u4ed6\u958b\u767c\u4eba\u54e1\u80fd\u5920\u8f15\u9b06\u7406\u89e3\u5176\u7528\u9014\u3002<\/li>\n<li><strong>\u7d22\u5f15<\/strong>: \u6839\u64da\u67e5\u8a62\u9700\u6c42\uff0c\u8003\u616e\u5c0dcc1\u5b57\u6bb5\u8a2d\u7f6e\u7d22\u5f15\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u3002<\/li>\n<li><strong>\u6587\u6a94\u5316<\/strong>: \u5c0dcc1\u5b57\u6bb5\u7684\u8a2d\u7f6e\u548c\u7528\u9014\u9032\u884c\u8a73\u7d30\u6587\u6a94\u5316\uff0c\u4ee5\u4fbf\u672a\u4f86\u7684\u7dad\u8b77\u548c\u64f4\u5c55\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-xmYRIeoZcA\">5. \u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684SQL\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u5275\u5efa\u4e00\u500b\u5305\u542bcc1\u5b57\u6bb5\u7684\u6578\u64da\u8868\uff1a<\/p>\n<pre><code>\nCREATE TABLE Users (\n    user_id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL UNIQUE,\n    cc1 VARCHAR(20) NOT NULL,\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0ccc1\u5b57\u6bb5\u88ab\u8a2d\u7f6e\u70baVARCHAR\u985e\u578b\uff0c\u4e26\u4e14\u8a2d\u7f6e\u4e86NOT NULL\u548cUNIQUE\u7d04\u675f\uff0c\u4ee5\u78ba\u4fdd\u6bcf\u500b\u7528\u6236\u90fd\u6709\u552f\u4e00\u7684cc1\u503c\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-xmYRIeoZcA\">\u7e3d\u7d50<\/h2>\n<p>\u6b63\u78ba\u8a2d\u7f6e\u6578\u64da\u5eab\u4e2d\u7684cc1\u5b57\u6bb5\u5c0d\u65bc\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u6027\u80fd\u81f3\u95dc\u91cd\u8981\u3002\u901a\u904e\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u3001\u8a2d\u7f6e\u5fc5\u8981\u7684\u7d04\u675f\u689d\u4ef6\u4ee5\u53ca\u9075\u5faa\u6700\u4f73\u5be6\u8e10\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u5eab\u4e2d\u7684\u4fe1\u606f\u3002\u5982\u679c\u60a8\u9700\u8981\u66f4\u591a\u6709\u95dc\u6578\u64da\u5eab\u8a2d\u7f6e\u7684\u8cc7\u8a0a\uff0c\u6216\u662f\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u4ee5\u7372\u53d6\u66f4\u591a\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u6b63\u78ba\u8a2d\u7f6e\u6578\u64da\u5eabcc1\u5b57\u6bb5\uff0c\u78ba\u4fdd\u6578\u64da\u5b8c\u6574\u6027\u8207\u6027\u80fd\u512a\u5316\uff0c\u63d0\u5347\u6578\u64da\u5eab\u7ba1\u7406\u6548\u7387\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-180004","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180004","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=180004"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180004\/revisions"}],"predecessor-version":[{"id":180005,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/180004\/revisions\/180005"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=180004"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=180004"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=180004"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}