{"id":76748,"date":"2024-10-16T09:31:15","date_gmt":"2024-10-16T01:31:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76748\/"},"modified":"2024-10-16T09:31:16","modified_gmt":"2024-10-16T01:31:16","slug":"mysql%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%88%87%e5%bb%ba%e5%ba%ab%e7%ad%96%e7%95%a5%e7%9a%84%e5%89%96%e6%9e%90","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76748\/","title":{"rendered":"MySQL\u6578\u64da\u985e\u578b\u8207\u5efa\u5eab\u7b56\u7565\u7684\u5256\u6790"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e8%88%87%e5%bb%ba%e5%ba%ab%e7%ad%96%e7%95%a5%e7%9a%84%e5%89%96%e6%9e%90-gWtigaNQoO\">MySQL\u6578\u64da\u985e\u578b\u8207\u5efa\u5eab\u7b56\u7565\u7684\u5256\u6790<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u6642\u4ee3\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u95dc\u4fc2\u578b\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u4e86\u89e3MySQL\u7684\u6578\u64da\u985e\u578b\u53ca\u5176\u5efa\u5eab\u7b56\u7565\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u7684\u6578\u64da\u985e\u578b\u53ca\u5176\u5728\u5efa\u5eab\u904e\u7a0b\u4e2d\u7684\u7b56\u7565\u3002<\/p>\n<h2 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id=\"%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-gWtigaNQoO\">\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u5c0d\u65bc\u6578\u64da\u5eab\u6027\u80fd\u548c\u5b58\u5132\u6548\u7387\u81f3\u95dc\u91cd\u8981\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u9078\u64c7\u6578\u64da\u985e\u578b\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li><strong>\u8003\u616e\u6578\u64da\u7bc4\u570d\uff1a<\/strong>\u5728\u9078\u64c7\u6574\u6578\u985e\u578b\u6642\uff0c\u61c9\u6839\u64da\u9810\u671f\u7684\u6578\u64da\u7bc4\u570d\u9078\u64c7\u5408\u9069\u7684\u985e\u578b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u53ea\u9700\u5b58\u51320\u5230255\u4e4b\u9593\u7684\u6578\u5b57\uff0c\u5247\u53ef\u4ee5\u4f7f\u7528TINYINT\u3002<\/li>\n<li><strong>\u4f7f\u7528VARCHAR\u800c\u975eCHAR\uff1a<\/strong>\u5c0d\u65bc\u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u4e32\uff0c\u4f7f\u7528VARCHAR\u53ef\u4ee5\u7bc0\u7701\u5b58\u5132\u7a7a\u9593\u3002CHAR\u9069\u5408\u56fa\u5b9a\u9577\u5ea6\u7684\u5b57\u7b26\u4e32\u3002<\/li>\n<li><strong>\u9078\u64c7\u5408\u9069\u7684\u6d6e\u9ede\u6578\u985e\u578b\uff1a<\/strong>\u5982\u679c\u9700\u8981\u7cbe\u78ba\u7684\u6578\u5b57\u8a08\u7b97\uff0c\u61c9\u4f7f\u7528DECIMAL\u985e\u578b\uff0c\u800c\u975eFLOAT\u6216DOUBLE\uff0c\u56e0\u70ba\u5f8c\u8005\u53ef\u80fd\u6703\u5c0e\u81f4\u7cbe\u5ea6\u640d\u5931\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%bb%ba%e5%ba%ab%e7%ad%96%e7%95%a5-gWtigaNQoO\">\u5efa\u5eab\u7b56\u7565<\/h2>\n<p>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u9664\u4e86\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u5916\uff0c\u9084\u9700\u8981\u8003\u616e\u5efa\u5eab\u7b56\u7565\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u6709\u6548\u7684\u5efa\u5eab\u7b56\u7565\uff1a<\/p>\n<ul>\n<li><strong>\u6b63\u898f\u5316\uff1a<\/strong>\u901a\u904e\u6b63\u898f\u5316\u4f86\u6d88\u9664\u6578\u64da\u5197\u9918\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u4e00\u81f4\u6027\u3002\u901a\u5e38\uff0c\u5c07\u6578\u64da\u5206\u70ba\u591a\u500b\u8868\uff0c\u4e26\u901a\u904e\u5916\u9375\u95dc\u806f\u4f86\u7dad\u8b77\u6578\u64da\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u7d22\u5f15\u8a2d\u8a08\uff1a<\/strong>\u70ba\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\uff0c\u61c9\u6839\u64da\u67e5\u8a62\u9700\u6c42\u8a2d\u8a08\u7d22\u5f15\u3002\u5e38\u898b\u7684\u7d22\u5f15\u985e\u578b\u5305\u62ec\u4e3b\u9375\u7d22\u5f15\u3001\u552f\u4e00\u7d22\u5f15\u548c\u666e\u901a\u7d22\u5f15\u3002<\/li>\n<li><strong>\u8003\u616e\u5206\u5340\uff1a<\/strong>\u5c0d\u65bc\u5927\u578b\u6578\u64da\u96c6\uff0c\u53ef\u4ee5\u8003\u616e\u4f7f\u7528\u5206\u5340\u6280\u8853\uff0c\u5c07\u6578\u64da\u5206\u6563\u5230\u4e0d\u540c\u7684\u7269\u7406\u5340\u57df\uff0c\u4ee5\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u548c\u7ba1\u7406\u6548\u7387\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-gWtigaNQoO\">\u793a\u4f8b\u4ee3\u78bc<\/h2>\n<p>\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684MySQL\u5efa\u5eab\u793a\u4f8b\uff0c\u5c55\u793a\u4e86\u5982\u4f55\u5275\u5efa\u4e00\u500b\u7528\u65bc\u5b58\u5132\u7528\u6236\u4fe1\u606f\u7684\u6578\u64da\u8868\uff1a<\/p>\n<pre><code>\nCREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL,\n    email VARCHAR(100) NOT NULL UNIQUE,\n    created_at DATETIME DEFAULT CURRENT_TIMESTAMP\n);\n<\/code><\/pre>\n<p>\u5728\u9019\u500b\u793a\u4f8b\u4e2d\uff0c\u6211\u5011\u4f7f\u7528\u4e86\u6574\u6578\u985e\u578b\u4f5c\u70ba\u4e3b\u9375\uff0cVARCHAR\u985e\u578b\u5b58\u5132\u7528\u6236\u540d\u548c\u96fb\u5b50\u90f5\u4ef6\uff0cDATETIME\u985e\u578b\u8a18\u9304\u5275\u5efa\u6642\u9593\u3002<\/p>\n<h2 id=\"%e7%b8%bd%e7%b5%90-gWtigaNQoO\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3MySQL\u7684\u6578\u64da\u985e\u578b\u53ca\u5176\u5efa\u5eab\u7b56\u7565\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u81f3\u95dc\u91cd\u8981\u3002\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u548c\u5408\u7406\u7684\u5efa\u5eab\u7b56\u7565\u53ef\u4ee5\u986f\u8457\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\u3002\u5c0d\u65bc\u9700\u8981\u7a69\u5b9a\u548c\u9ad8\u6548\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u7684\u7528\u6236\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u6216<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u4f86\u90e8\u7f72MySQL\u6578\u64da\u5eab\uff0c\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u6574\u9ad4\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6df1\u5165\u5256\u6790MySQL\u6578\u64da\u985e\u578b\u8207\u5efa\u5eab\u7b56\u7565\uff0c\u52a9\u60a8\u512a\u5316\u6578\u64da\u7d50\u69cb\uff0c\u63d0\u9ad8\u6027\u80fd\u8207\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-76748","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76748","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=76748"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76748\/revisions"}],"predecessor-version":[{"id":76749,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76748\/revisions\/76749"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76748"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76748"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76748"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}