{"id":186282,"date":"2024-11-11T04:37:24","date_gmt":"2024-11-10T20:37:24","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186282\/"},"modified":"2024-11-11T04:37:26","modified_gmt":"2024-11-10T20:37:26","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b8%b8%e7%94%a8%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e4%b8%80%e8%a6%bd%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b8%b8%e7%94%a8%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%ef%bc%89","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186282\/","title":{"rendered":"\u6578\u64da\u5eab\u5e38\u7528\u5b57\u6bb5\u985e\u578b\u4e00\u89bd\uff08\u6578\u64da\u5eab\u5e38\u7528\u5b57\u6bb5\u985e\u578b\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e5%b8%b8%e7%94%a8%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e4%b8%80%e8%a6%bd-YscIDmXXkT\">\u6578\u64da\u5eab\u5e38\u7528\u5b57\u6bb5\u985e\u578b\u4e00\u89bd<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b\u5c0d\u65bc\u6578\u64da\u7684\u5b58\u5132\u3001\u67e5\u8a62\u548c\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u4e0d\u540c\u7684\u5b57\u6bb5\u985e\u578b\u9069\u7528\u65bc\u4e0d\u540c\u7684\u6578\u64da\u9700\u6c42\uff0c\u4e86\u89e3\u9019\u4e9b\u5b57\u6bb5\u985e\u578b\u80fd\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u6709\u6548\u5730\u8a2d\u8a08\u6578\u64da\u5eab\u7d50\u69cb\u3002\u672c\u6587\u5c07\u4ecb\u7d39\u4e00\u4e9b\u5e38\u7528\u7684\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u53ca\u5176\u7279\u9ede\u3002<\/p>\n<h2 id=\"1-%e6%95%b4%e6%95%b8%e9%a1%9e%e5%9e%8b-YscIDmXXkT\">1. \u6574\u6578\u985e\u578b<\/h2>\n<p>\u6574\u6578\u985e\u578b\u7528\u65bc\u5b58\u5132\u6574\u6578\u503c\uff0c\u901a\u5e38\u7528\u65bc\u8a08\u6578\u6216\u7d22\u5f15\u3002\u5e38\u898b\u7684\u6574\u6578\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>TINYINT<\/code>\uff1a\u7bc4\u570d\u70ba -128 \u5230 127 \u6216 0 \u5230 255\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 1 \u5b57\u7bc0\u3002<\/li>\n<li><code>SMALLINT<\/code>\uff1a\u7bc4\u570d\u70ba -32,768 \u5230 32,767 \u6216 0 \u5230 65,535\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 2 \u5b57\u7bc0\u3002<\/li>\n<li><code>MEDIUMINT<\/code>\uff1a\u7bc4\u570d\u70ba -8,388,608 \u5230 8,388,607 \u6216 0 \u5230 16,777,215\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 3 \u5b57\u7bc0\u3002<\/li>\n<li><code>INT<\/code>\uff1a\u7bc4\u570d\u70ba -2,147,483,648 \u5230 2,147,483,647 \u6216 0 \u5230 4,294,967,295\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 4 \u5b57\u7bc0\u3002<\/li>\n<li><code>BIGINT<\/code>\uff1a\u7bc4\u570d\u70ba -9,223,372,036,854,775,808 \u5230 9,223,372,036,854,775,807 \u6216 0 \u5230 18,446,744,073,709,551,615\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 8 \u5b57\u7bc0\u3002<\/li>\n<\/ul>\n<h2 id=\"2-%e6%b5%ae%e9%bb%9e%e6%95%b8%e9%a1%9e%e5%9e%8b-YscIDmXXkT\">2. \u6d6e\u9ede\u6578\u985e\u578b<\/h2>\n<p>\u6d6e\u9ede\u6578\u985e\u578b\u7528\u65bc\u5b58\u5132\u5e36\u5c0f\u6578\u7684\u6578\u503c\uff0c\u9069\u5408\u9700\u8981\u7cbe\u78ba\u8a08\u7b97\u7684\u5834\u5408\u3002\u5e38\u898b\u7684\u6d6e\u9ede\u6578\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>FLOAT<\/code>\uff1a\u55ae\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u4f54\u7528 4 \u5b57\u7bc0\uff0c\u7bc4\u570d\u7d04\u70ba -3.402823466E+38 \u5230 3.402823466E+38\u3002<\/li>\n<li><code>DOUBLE<\/code>\uff1a\u96d9\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u4f54\u7528 8 \u5b57\u7bc0\uff0c\u7bc4\u570d\u7d04\u70ba -1.7976931348623157E+308 \u5230 1.7976931348623157E+308\u3002<\/li>\n<li><code>DECIMAL<\/code>\uff1a\u7cbe\u78ba\u5c0f\u6578\uff0c\u9069\u5408\u5b58\u5132\u91d1\u984d\u7b49\u9700\u8981\u9ad8\u7cbe\u5ea6\u7684\u6578\u64da\uff0c\u4f7f\u7528\u8005\u53ef\u4ee5\u81ea\u5b9a\u7fa9\u7cbe\u5ea6\u548c\u5c0f\u6578\u4f4d\u6578\u3002<\/li>\n<\/ul>\n<h2 id=\"3-%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%a1%9e%e5%9e%8b-YscIDmXXkT\">3. \u5b57\u7b26\u4e32\u985e\u578b<\/h2>\n<p>\u5b57\u7b26\u4e32\u985e\u578b\u7528\u65bc\u5b58\u5132\u6587\u672c\u6578\u64da\uff0c\u5e38\u898b\u7684\u5b57\u7b26\u4e32\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>CHAR<\/code>\uff1a\u56fa\u5b9a\u9577\u5ea6\u5b57\u7b26\u4e32\uff0c\u4f54\u7528\u7684\u5b57\u7bc0\u6578\u7b49\u65bc\u5b9a\u7fa9\u7684\u9577\u5ea6\uff0c\u9069\u5408\u5b58\u5132\u9577\u5ea6\u56fa\u5b9a\u7684\u6578\u64da\u3002<\/li>\n<li><code>VARCHAR<\/code>\uff1a\u53ef\u8b8a\u9577\u5ea6\u5b57\u7b26\u4e32\uff0c\u4f54\u7528\u7684\u5b57\u7bc0\u6578\u6839\u64da\u5be6\u969b\u5b58\u5132\u7684\u5b57\u7b26\u6578\u800c\u5b9a\uff0c\u9069\u5408\u5b58\u5132\u9577\u5ea6\u4e0d\u56fa\u5b9a\u7684\u6578\u64da\u3002<\/li>\n<li><code>TEXT<\/code>\uff1a\u7528\u65bc\u5b58\u5132\u9577\u6587\u672c\uff0c\u6700\u5927\u53ef\u9054 65,535 \u5b57\u7b26\uff0c\u9069\u5408\u5b58\u5132\u5927\u6bb5\u6587\u5b57\u3002<\/li>\n<\/ul>\n<h2 id=\"4-%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-YscIDmXXkT\">4. \u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\u7528\u65bc\u5b58\u5132\u6642\u9593\u76f8\u95dc\u7684\u6578\u64da\uff0c\u5e38\u898b\u7684\u985e\u578b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><code>DATE<\/code>\uff1a\u5b58\u5132\u65e5\u671f\uff0c\u683c\u5f0f\u70ba &#8216;YYYY-MM-DD&#8217;\u3002<\/li>\n<li><code>TIME<\/code>\uff1a\u5b58\u5132\u6642\u9593\uff0c\u683c\u5f0f\u70ba &#8216;HH:MM:SS&#8217;\u3002<\/li>\n<li><code>DATETIME<\/code>\uff1a\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70ba &#8216;YYYY-MM-DD HH:MM:SS&#8217;\u3002<\/li>\n<li><code>TIMESTAMP<\/code>\uff1a\u5b58\u5132\u81ea 1970-01-01 00:00:00 UTC \u4ee5\u4f86\u7684\u79d2\u6578\uff0c\u9069\u5408\u7528\u65bc\u8a18\u9304\u4e8b\u4ef6\u7684\u6642\u9593\u6233\u3002<\/li>\n<\/ul>\n<h2 id=\"5-%e5%b8%83%e7%88%be%e9%a1%9e%e5%9e%8b-YscIDmXXkT\">5. \u5e03\u723e\u985e\u578b<\/h2>\n<p>\u5e03\u723e\u985e\u578b\u7528\u65bc\u5b58\u5132\u771f\u6216\u5047\u7684\u503c\uff0c\u901a\u5e38\u7528\u65bc\u8868\u793a\u958b\u95dc\u72c0\u614b\u3002\u4e00\u822c\u4f7f\u7528 <code>BOOLEAN<\/code> \u6216 <code>TINYINT(1)<\/code> \u4f86\u8868\u793a\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-YscIDmXXkT\">\u7d50\u8ad6<\/h2>\n<p>\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u5b57\u6bb5\u985e\u578b\u5c0d\u65bc\u6578\u64da\u7684\u6709\u6548\u7ba1\u7406\u81f3\u95dc\u91cd\u8981\u3002\u4e86\u89e3\u5404\u7a2e\u5b57\u6bb5\u985e\u578b\u7684\u7279\u9ede\u548c\u9069\u7528\u5834\u666f\uff0c\u53ef\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u5728\u8a2d\u8a08\u6578\u64da\u5eab\u6642\u505a\u51fa\u66f4\u660e\u667a\u7684\u6c7a\u7b56\u3002\u7121\u8ad6\u662f\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u4e32\u9084\u662f\u65e5\u671f\u6642\u9593\u985e\u578b\uff0c\u6b63\u78ba\u7684\u9078\u64c7\u90fd\u80fd\u63d0\u9ad8\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7dad\u8b77\u6027\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\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\u7a69\u5b9a\u53ef\u9760\u7684\u652f\u6301\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u6578\u64da\u5eab\u5e38\u7528\u5b57\u6bb5\u985e\u578b\uff0c\u5305\u62ec\u6574\u6578\u3001\u6d6e\u9ede\u6578\u3001\u5b57\u7b26\u4e32\u7b49\uff0c\u5e6b\u52a9\u60a8\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4ee5\u512a\u5316\u6578\u64da\u7ba1\u7406\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-186282","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186282","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=186282"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186282\/revisions"}],"predecessor-version":[{"id":186283,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186282\/revisions\/186283"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}