{"id":187900,"date":"2024-11-11T18:07:25","date_gmt":"2024-11-11T10:07:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/187900\/"},"modified":"2024-11-11T18:07:26","modified_gmt":"2024-11-11T10:07:26","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e5%88%86%e9%a1%9e%ef%bc%8c%e4%bd%a0%e7%9f%a5%e9%81%93%e5%b9%be%e7%a8%ae%ef%bc%9f-%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/187900\/","title":{"rendered":"\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u5206\u985e\uff0c\u4f60\u77e5\u9053\u5e7e\u7a2e\uff1f (\u6578\u64da\u5eab\u7684\u5b57\u6bb5\u985e\u578b\u6709\u90a3\u5e7e\u7a2e)"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e5%88%86%e9%a1%9e%ef%bc%8c%e4%bd%a0%e7%9f%a5%e9%81%93%e5%b9%be%e7%a8%ae%ef%bc%9f-wkOakNbLtc\">\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u5206\u985e\uff0c\u4f60\u77e5\u9053\u5e7e\u7a2e\uff1f<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u5b57\u6bb5\u985e\u578b\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u3001\u67e5\u8a62\u548c\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u4e0d\u540c\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff08\u5982 MySQL\u3001PostgreSQL\u3001Oracle \u7b49\uff09\u63d0\u4f9b\u4e86\u591a\u7a2e\u5b57\u6bb5\u985e\u578b\uff0c\u4ee5\u6eff\u8db3\u4e0d\u540c\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u6578\u64da\u5eab\u4e2d\u5e38\u898b\u7684\u5b57\u6bb5\u985e\u578b\u53ca\u5176\u5206\u985e\uff0c\u5e6b\u52a9\u8b80\u8005\u66f4\u597d\u5730\u7406\u89e3\u5982\u4f55\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e7%9a%84%e5%9f%ba%e6%9c%ac%e5%88%86%e9%a1%9e-wkOakNbLtc\">\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u7684\u57fa\u672c\u5206\u985e<\/h2>\n<p>\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u901a\u5e38\u53ef\u4ee5\u5206\u70ba\u4ee5\u4e0b\u5e7e\u985e\uff1a<\/p>\n<ul>\n<li><strong>\u6578\u503c\u985e\u578b<\/strong><\/li>\n<li><strong>\u5b57\u7b26\u985e\u578b<\/strong><\/li>\n<li><strong>\u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/strong><\/li>\n<li><strong>\u5e03\u723e\u985e\u578b<\/strong><\/li>\n<li><strong>\u4e8c\u9032\u5236\u985e\u578b<\/strong><\/li>\n<\/ul>\n<h3 id=\"1-%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b-wkOakNbLtc\">1. \u6578\u503c\u985e\u578b<\/h3>\n<p>\u6578\u503c\u985e\u578b\u7528\u65bc\u5b58\u5132\u6578\u5b57\u6578\u64da\uff0c\u901a\u5e38\u5206\u70ba\u6574\u6578\u548c\u6d6e\u9ede\u6578\u3002\u6574\u6578\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>TINYINT<\/code>: \u5b58\u5132\u7bc4\u570d\u70ba -128 \u5230 127 \u7684\u5c0f\u6574\u6578\u3002<\/li>\n<li><code>SMALLINT<\/code>: \u5b58\u5132\u7bc4\u570d\u70ba -32,768 \u5230 32,767 \u7684\u5c0f\u6574\u6578\u3002<\/li>\n<li><code>MEDIUMINT<\/code>: \u5b58\u5132\u7bc4\u570d\u70ba -8,388,608 \u5230 8,388,607 \u7684\u4e2d\u7b49\u6574\u6578\u3002<\/li>\n<li><code>INT<\/code>: \u5b58\u5132\u7bc4\u570d\u70ba -2,147,483,648 \u5230 2,147,483,647 \u7684\u6574\u6578\u3002<\/li>\n<li><code>BIGINT<\/code>: \u5b58\u5132\u7bc4\u570d\u70ba -9,223,372,036,854,775,808 \u5230 9,223,372,036,854,775,807 \u7684\u5927\u6574\u6578\u3002<\/li>\n<\/ul>\n<p>\u6d6e\u9ede\u6578\u985e\u578b\u5247\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>FLOAT<\/code>: \u7528\u65bc\u5b58\u5132\u55ae\u7cbe\u5ea6\u6d6e\u9ede\u6578\u3002<\/li>\n<li><code>DOUBLE<\/code>: \u7528\u65bc\u5b58\u5132\u96d9\u7cbe\u5ea6\u6d6e\u9ede\u6578\u3002<\/li>\n<li><code>DECIMAL<\/code>: \u7528\u65bc\u5b58\u5132\u7cbe\u78ba\u7684\u5c0f\u6578\uff0c\u901a\u5e38\u7528\u65bc\u8ca1\u52d9\u8a08\u7b97\u3002<\/li>\n<\/ul>\n<h3 id=\"2-%e5%ad%97%e7%ac%a6%e9%a1%9e%e5%9e%8b-wkOakNbLtc\">2. \u5b57\u7b26\u985e\u578b<\/h3>\n<p>\u5b57\u7b26\u985e\u578b\u7528\u65bc\u5b58\u5132\u6587\u672c\u6578\u64da\uff0c\u4e3b\u8981\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>CHAR(n)<\/code>: \u56fa\u5b9a\u9577\u5ea6\u7684\u5b57\u7b26\u4e32\uff0c\u9577\u5ea6\u70ba n\u3002<\/li>\n<li><code>VARCHAR(n)<\/code>: \u53ef\u8b8a\u9577\u5ea6\u7684\u5b57\u7b26\u4e32\uff0c\u6700\u5927\u9577\u5ea6\u70ba n\u3002<\/li>\n<li><code>TEXT<\/code>: \u7528\u65bc\u5b58\u5132\u9577\u6587\u672c\uff0c\u6700\u5927\u9577\u5ea6\u53ef\u9054 65,535 \u5b57\u7b26\u3002<\/li>\n<li><code>BLOB<\/code>: \u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u5927\u5c0d\u8c61\uff0c\u901a\u5e38\u7528\u65bc\u5716\u7247\u6216\u6587\u4ef6\u3002<\/li>\n<\/ul>\n<h3 id=\"3-%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-wkOakNbLtc\">3. \u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h3>\n<p>\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\u7528\u65bc\u5b58\u5132\u6642\u9593\u76f8\u95dc\u7684\u6578\u64da\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>: \u5b58\u5132\u65e5\u671f\uff0c\u683c\u5f0f\u70ba YYYY-MM-DD\u3002<\/li>\n<li><code>TIME<\/code>: \u5b58\u5132\u6642\u9593\uff0c\u683c\u5f0f\u70ba HH:MM:SS\u3002<\/li>\n<li><code>DATETIME<\/code>: \u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70ba YYYY-MM-DD HH:MM:SS\u3002<\/li>\n<li><code>TIMESTAMP<\/code>: \u5b58\u5132\u81ea 1970-01-01 00:00:00 UTC \u4ee5\u4f86\u7684\u79d2\u6578\u3002<\/li>\n<\/ul>\n<h3 id=\"4-%e5%b8%83%e7%88%be%e9%a1%9e%e5%9e%8b-wkOakNbLtc\">4. \u5e03\u723e\u985e\u578b<\/h3>\n<p>\u5e03\u723e\u985e\u578b\u7528\u65bc\u5b58\u5132\u771f\u6216\u5047\u7684\u503c\uff0c\u901a\u5e38\u4f7f\u7528 <code>BOOLEAN<\/code> \u6216 <code>TINYINT(1)<\/code> \u4f86\u8868\u793a\u3002<\/p>\n<h3 id=\"5-%e4%ba%8c%e9%80%b2%e5%88%b6%e9%a1%9e%e5%9e%8b-wkOakNbLtc\">5. \u4e8c\u9032\u5236\u985e\u578b<\/h3>\n<p>\u4e8c\u9032\u5236\u985e\u578b\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\uff0c\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>BINARY(n)<\/code>: \u56fa\u5b9a\u9577\u5ea6\u7684\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<li><code>VARBINARY(n)<\/code>: \u53ef\u8b8a\u9577\u5ea6\u7684\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<li><code>BLOB<\/code>: \u7528\u65bc\u5b58\u5132\u5927\u5bb9\u91cf\u7684\u4e8c\u9032\u5236\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"%e9%81%b8%e6%93%87%e5%90%88%e9%81%a9%e7%9a%84%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b-wkOakNbLtc\">\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b<\/h2>\n<p>\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\uff0c\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b\u81f3\u95dc\u91cd\u8981\u3002\u9078\u64c7\u4e0d\u7576\u53ef\u80fd\u5c0e\u81f4\u6578\u64da\u5197\u9918\u3001\u67e5\u8a62\u6548\u7387\u4f4e\u4e0b\u6216\u5b58\u5132\u7a7a\u9593\u6d6a\u8cbb\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u9078\u64c7\u5b57\u6bb5\u985e\u578b\u7684\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u6839\u64da\u6578\u64da\u7684\u7279\u6027\u9078\u64c7\u5408\u9069\u7684\u6578\u503c\u985e\u578b\uff0c\u907f\u514d\u4f7f\u7528\u904e\u5927\u7684\u985e\u578b\u3002<\/li>\n<li>\u5c0d\u65bc\u6587\u672c\u6578\u64da\uff0c\u6839\u64da\u9810\u671f\u7684\u9577\u5ea6\u9078\u64c7 <code>CHAR<\/code> \u6216 <code>VARCHAR<\/code>\u3002<\/li>\n<li>\u4f7f\u7528\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\u6642\uff0c\u8003\u616e\u5230\u6642\u5340\u7684\u5f71\u97ff\u3002<\/li>\n<li>\u5c0d\u65bc\u9700\u8981\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\u7684\u60c5\u6cc1\uff0c\u9078\u64c7\u5408\u9069\u7684\u4e8c\u9032\u5236\u985e\u578b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-wkOakNbLtc\">\u7e3d\u7d50<\/h2>\n<p>\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u7684\u9078\u64c7\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u548c\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u4e86\u89e3\u4e0d\u540c\u985e\u578b\u7684\u7279\u6027\u548c\u9069\u7528\u5834\u666f\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u8a2d\u8a08\u51fa\u66f4\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7d50\u69cb\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684 <a href=\"https:\/\/server.hk\">VPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\uff0c\u6eff\u8db3\u60a8\u7684\u9700\u6c42\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>\u63a2\u7d22\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u7684\u5206\u985e\uff0c\u4e86\u89e3\u5e38\u898b\u7684\u6578\u64da\u985e\u578b\u53ca\u5176\u7528\u9014\uff0c\u63d0\u5347\u6578\u64da\u7ba1\u7406\u8207\u8a2d\u8a08\u7684\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-187900","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187900","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=187900"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187900\/revisions"}],"predecessor-version":[{"id":187901,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/187900\/revisions\/187901"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=187900"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=187900"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=187900"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}