{"id":76394,"date":"2024-10-16T06:18:22","date_gmt":"2024-10-15T22:18:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76394\/"},"modified":"2024-10-16T06:18:22","modified_gmt":"2024-10-15T22:18:22","slug":"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%9d%e5%ad%98%e9%a1%9e%e5%9e%8b%ef%bc%9a%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e8%a9%b3%e8%a7%a3-mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%9d%e5%ad%98%e9%a1%9e","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76394\/","title":{"rendered":"MySQL\u6578\u64da\u5eab\u4fdd\u5b58\u985e\u578b\uff1a\u5b57\u6bb5\u985e\u578b\u8a73\u89e3 (MySQL\u6578\u64da\u5eab\u4fdd\u5b58\u985e\u578b)"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e4%bf%9d%e5%ad%98%e9%a1%9e%e5%9e%8b%ef%bc%9a%e5%ad%97%e6%ae%b5%e9%a1%9e%e5%9e%8b%e8%a9%b3%e8%a7%a3-zZGdxIDSBZ\">MySQL\u6578\u64da\u5eab\u4fdd\u5b58\u985e\u578b\uff1a\u5b57\u6bb5\u985e\u578b\u8a73\u89e3<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cMySQL\u4f5c\u70ba\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\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\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7d50\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u7684\u5b57\u6bb5\u985e\u578b\uff0c\u5e6b\u52a9\u958b\u767c\u8005\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u985e\u578b\u4ee5\u63d0\u9ad8\u6027\u80fd\u548c\u6578\u64da\u5b8c\u6574\u6027\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b%e6%a6%82%e8%bf%b0-zZGdxIDSBZ\">\u6578\u64da\u985e\u578b\u6982\u8ff0<\/h2>\n<p>MySQL\u652f\u6301\u591a\u7a2e\u6578\u64da\u985e\u578b\uff0c\u4e3b\u8981\u5206\u70ba\u4ee5\u4e0b\u5e7e\u985e\uff1a<\/p>\n<ul>\n<li><strong id=\"%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u6578\u503c\u985e\u578b<\/strong><\/li>\n<li><strong id=\"%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/strong><\/li>\n<li><strong id=\"%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u5b57\u7b26\u4e32\u985e\u578b<\/strong><\/li>\n<li><strong id=\"%e4%ba%8c%e9%80%b2%e5%88%b6%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u4e8c\u9032\u5236\u985e\u578b<\/strong><\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e5%80%bc%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u6578\u503c\u985e\u578b<\/h2>\n<p>\u6578\u503c\u985e\u578b\u7528\u65bc\u5b58\u5132\u6578\u5b57\u6578\u64da\uff0c\u6839\u64da\u9700\u8981\u7684\u7cbe\u5ea6\u548c\u7bc4\u570d\uff0cMySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>TINYINT<\/strong>\uff1a\u7bc4\u570d\u70ba -128 \u5230 127\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 255\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 1 \u5b57\u7bc0\u3002<\/li>\n<li><strong>SMALLINT<\/strong>\uff1a\u7bc4\u570d\u70ba -32,768 \u5230 32,767\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 65,535\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 2 \u5b57\u7bc0\u3002<\/li>\n<li><strong>MEDIUMINT<\/strong>\uff1a\u7bc4\u570d\u70ba -8,388,608 \u5230 8,388,607\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 16,777,215\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 3 \u5b57\u7bc0\u3002<\/li>\n<li><strong>INT<\/strong>\uff1a\u7bc4\u570d\u70ba -2,147,483,648 \u5230 2,147,483,647\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 4,294,967,295\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 4 \u5b57\u7bc0\u3002<\/li>\n<li><strong>BIGINT<\/strong>\uff1a\u7bc4\u570d\u70ba -9,223,372,036,854,775,808 \u5230 9,223,372,036,854,775,807\uff08\u6709\u7b26\u865f\uff09\u6216 0 \u5230 18,446,744,073,709,551,615\uff08\u7121\u7b26\u865f\uff09\uff0c\u4f54\u7528 8 \u5b57\u7bc0\u3002<\/li>\n<li><strong>FLOAT<\/strong>\uff1a\u55ae\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u4f54\u7528 4 \u5b57\u7bc0\u3002<\/li>\n<li><strong>DOUBLE<\/strong>\uff1a\u96d9\u7cbe\u5ea6\u6d6e\u9ede\u6578\uff0c\u4f54\u7528 8 \u5b57\u7bc0\u3002<\/li>\n<li><strong>DECIMAL(M, D)<\/strong>\uff1a\u7cbe\u78ba\u7684\u6578\u503c\u985e\u578b\uff0cM \u8868\u793a\u7e3d\u4f4d\u6578\uff0cD \u8868\u793a\u5c0f\u6578\u4f4d\u6578\uff0c\u4f54\u7528\u7684\u5b57\u7bc0\u6578\u6839\u64da M \u7684\u5927\u5c0f\u800c\u8b8a\u5316\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%97%a5%e6%9c%9f%e5%92%8c%e6%99%82%e9%96%93%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/h2>\n<p>MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u65e5\u671f\u548c\u6642\u9593\u985e\u578b\uff0c\u9069\u5408\u4e0d\u540c\u7684\u9700\u6c42\uff1a<\/p>\n<ul>\n<li><strong>DATE<\/strong>\uff1a\u5b58\u5132\u65e5\u671f\uff0c\u683c\u5f0f\u70ba &#8216;YYYY-MM-DD&#8217;\uff0c\u4f54\u7528 3 \u5b57\u7bc0\u3002<\/li>\n<li><strong>TIME<\/strong>\uff1a\u5b58\u5132\u6642\u9593\uff0c\u683c\u5f0f\u70ba &#8216;HH:MM:SS&#8217;\uff0c\u4f54\u7528 3 \u5b57\u7bc0\u3002<\/li>\n<li><strong>DATETIME<\/strong>\uff1a\u5b58\u5132\u65e5\u671f\u548c\u6642\u9593\uff0c\u683c\u5f0f\u70ba &#8216;YYYY-MM-DD HH:MM:SS&#8217;\uff0c\u4f54\u7528 8 \u5b57\u7bc0\u3002<\/li>\n<li><strong>TIMESTAMP<\/strong>\uff1a\u81ea 1970-01-01 00:00:01 UTC \u958b\u59cb\u7684\u79d2\u6578\uff0c\u4f54\u7528 4 \u5b57\u7bc0\u3002<\/li>\n<li><strong>YEAR<\/strong>\uff1a\u5b58\u5132\u5e74\u4efd\uff0c\u683c\u5f0f\u70ba &#8216;YYYY&#8217;\uff0c\u4f54\u7528 1 \u5b57\u7bc0\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%ad%97%e7%ac%a6%e4%b8%b2%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u5b57\u7b26\u4e32\u985e\u578b<\/h2>\n<p>\u5b57\u7b26\u4e32\u985e\u578b\u7528\u65bc\u5b58\u5132\u6587\u672c\u6578\u64da\uff0cMySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff1a<\/p>\n<ul>\n<li><strong>CHAR(M)<\/strong>\uff1a\u56fa\u5b9a\u9577\u5ea6\u5b57\u7b26\u4e32\uff0cM \u7684\u7bc4\u570d\u70ba 0 \u5230 255\uff0c\u4f54\u7528 M \u5b57\u7bc0\u3002<\/li>\n<li><strong>VARCHAR(M)<\/strong>\uff1a\u53ef\u8b8a\u9577\u5ea6\u5b57\u7b26\u4e32\uff0cM \u7684\u7bc4\u570d\u70ba 0 \u5230 65,535\uff0c\u4f54\u7528\u5be6\u969b\u5b57\u7bc0\u6578\u52a0 1 \u6216 2 \u5b57\u7bc0\u3002<\/li>\n<li><strong>TINYTEXT<\/strong>\uff1a\u6700\u5927\u9577\u5ea6\u70ba 255 \u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u4f54\u7528\u5be6\u969b\u5b57\u7bc0\u6578\u52a0 1 \u5b57\u7bc0\u3002<\/li>\n<li><strong>TEXT<\/strong>\uff1a\u6700\u5927\u9577\u5ea6\u70ba 65,535 \u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u4f54\u7528\u5be6\u969b\u5b57\u7bc0\u6578\u52a0 2 \u5b57\u7bc0\u3002<\/li>\n<li><strong>MEDIUMTEXT<\/strong>\uff1a\u6700\u5927\u9577\u5ea6\u70ba 16,777,215 \u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u4f54\u7528\u5be6\u969b\u5b57\u7bc0\u6578\u52a0 3 \u5b57\u7bc0\u3002<\/li>\n<li><strong>LONGTEXT<\/strong>\uff1a\u6700\u5927\u9577\u5ea6\u70ba 4,294,967,295 \u5b57\u7b26\u7684\u5b57\u7b26\u4e32\uff0c\u4f54\u7528\u5be6\u969b\u5b57\u7bc0\u6578\u52a0 4 \u5b57\u7bc0\u3002<\/li>\n<\/ul>\n<h2 id=\"%e4%ba%8c%e9%80%b2%e5%88%b6%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\u4e8c\u9032\u5236\u985e\u578b<\/h2>\n<p>\u4e8c\u9032\u5236\u985e\u578b\u7528\u65bc\u5b58\u5132\u4e8c\u9032\u5236\u6578\u64da\uff0c\u5982\u5716\u50cf\u6216\u6587\u4ef6\uff1a<\/p>\n<ul>\n<li><strong>BINARY(M)<\/strong>\uff1a\u56fa\u5b9a\u9577\u5ea6\u7684\u4e8c\u9032\u5236\u6578\u64da\uff0cM \u7684\u7bc4\u570d\u70ba 0 \u5230 255\u3002<\/li>\n<li><strong>VARBINARY(M)<\/strong>\uff1a\u53ef\u8b8a\u9577\u5ea6\u7684\u4e8c\u9032\u5236\u6578\u64da\uff0cM \u7684\u7bc4\u570d\u70ba 0 \u5230 65,535\u3002<\/li>\n<li><strong>TINYBLOB<\/strong>\u3001<strong>BLOB<\/strong>\u3001<strong>MEDIUMBLOB<\/strong>\u3001<strong>LONGBLOB<\/strong>\uff1a\u5206\u5225\u7528\u65bc\u5b58\u5132\u4e0d\u540c\u5927\u5c0f\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%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-zZGdxIDSBZ\">\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\u5efa\u8b70\uff1a<\/p>\n<ul>\n<li>\u6839\u64da\u6578\u64da\u7684\u7bc4\u570d\u9078\u64c7\u5408\u9069\u7684\u6578\u503c\u985e\u578b\uff0c\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u5b58\u5132\u6d6a\u8cbb\u3002<\/li>\n<li>\u5c0d\u65bc\u5b57\u7b26\u4e32\u6578\u64da\uff0c\u4f7f\u7528 VARCHAR \u800c\u975e CHAR \u53ef\u4ee5\u7bc0\u7701\u7a7a\u9593\uff0c\u7279\u5225\u662f\u7576\u5b57\u7b26\u4e32\u9577\u5ea6\u8b8a\u5316\u8f03\u5927\u6642\u3002<\/li>\n<li>\u5c0d\u65bc\u65e5\u671f\u548c\u6642\u9593\uff0c\u6839\u64da\u9700\u6c42\u9078\u64c7\u5408\u9069\u7684\u985e\u578b\uff0c\u4f8b\u5982\u4f7f\u7528 TIMESTAMP \u4f86\u8a18\u9304\u4e8b\u4ef6\u7684\u767c\u751f\u6642\u9593\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-zZGdxIDSBZ\">\u7e3d\u7d50<\/h2>\n<p>\u4e86\u89e3MySQL\u7684\u6578\u64da\u985e\u578b\u5c0d\u65bc\u8a2d\u8a08\u9ad8\u6548\u7684\u6578\u64da\u5eab\u7d50\u69cb\u81f3\u95dc\u91cd\u8981\u3002\u9078\u64c7\u5408\u9069\u7684\u5b57\u6bb5\u985e\u578b\u4e0d\u50c5\u80fd\u63d0\u9ad8\u6027\u80fd\uff0c\u9084\u80fd\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u548c\u6e96\u78ba\u6027\u3002\u7121\u8ad6\u662f\u958b\u767c\u5c0f\u578b\u61c9\u7528\u9084\u662f\u5927\u578b\u7cfb\u7d71\uff0c\u6b63\u78ba\u7684\u6578\u64da\u985e\u578b\u9078\u64c7\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\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\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>\u6df1\u5165\u4e86\u89e3MySQL\u6578\u64da\u5eab\u7684\u5b57\u6bb5\u985e\u578b\uff0c\u638c\u63e1\u5404\u7a2e\u4fdd\u5b58\u985e\u578b\u7684\u7279\u9ede\u8207\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\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-76394","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76394","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=76394"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76394\/revisions"}],"predecessor-version":[{"id":76395,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76394\/revisions\/76395"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76394"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76394"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76394"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}