{"id":162941,"date":"2024-11-04T19:18:19","date_gmt":"2024-11-04T11:18:19","guid":{"rendered":"https:\/\/server.hk\/cnblog\/162941\/"},"modified":"2024-11-04T19:18:20","modified_gmt":"2024-11-04T11:18:20","slug":"%e6%95%99%e6%82%a8%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%bemysql%e6%b7%bb%e5%8a%a0%e6%96%b0%e5%ad%97%e6%ae%b5","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/162941\/","title":{"rendered":"\u6559\u60a8\u5982\u4f55\u5be6\u73feMYSQL\u6dfb\u52a0\u65b0\u5b57\u6bb5"},"content":{"rendered":"<h1 id=\"%e6%95%99%e6%82%a8%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%bemysql%e6%b7%bb%e5%8a%a0%e6%96%b0%e5%ad%97%e6%ae%b5-XLEqlESSqu\">\u6559\u60a8\u5982\u4f55\u5be6\u73feMYSQL\u6dfb\u52a0\u65b0\u5b57\u6bb5<\/h1>\n<p>\u5728\u6578\u64da\u5eab\u7ba1\u7406\u4e2d\uff0cMySQL\u662f\u4e00\u500b\u975e\u5e38\u6d41\u884c\u7684\u9078\u64c7\uff0c\u56e0\u70ba\u5b83\u7684\u9748\u6d3b\u6027\u548c\u5f37\u5927\u7684\u529f\u80fd\u3002\u7576\u60a8\u9700\u8981\u5728\u73fe\u6709\u7684\u6578\u64da\u8868\u4e2d\u6dfb\u52a0\u65b0\u5b57\u6bb5\u6642\uff0c\u9019\u662f\u4e00\u500b\u5e38\u898b\u7684\u9700\u6c42\u3002\u672c\u6587\u5c07\u6307\u5c0e\u60a8\u5982\u4f55\u5728MySQL\u4e2d\u6dfb\u52a0\u65b0\u5b57\u6bb5\uff0c\u4e26\u63d0\u4f9b\u4e00\u4e9b\u5be6\u7528\u7684\u793a\u4f8b\u548c\u6ce8\u610f\u4e8b\u9805\u3002<\/p>\n<h2 id=\"%e7%82%ba%e4%bb%80%e9%ba%bc%e9%9c%80%e8%a6%81%e6%b7%bb%e5%8a%a0%e6%96%b0%e5%ad%97%e6%ae%b5-XLEqlESSqu\">\u70ba\u4ec0\u9ebc\u9700\u8981\u6dfb\u52a0\u65b0\u5b57\u6bb5<\/h2>\n<p>\u5728\u6578\u64da\u5eab\u8a2d\u8a08\u4e2d\uff0c\u96a8\u8457\u696d\u52d9\u9700\u6c42\u7684\u8b8a\u5316\uff0c\u60a8\u53ef\u80fd\u9700\u8981\u5728\u73fe\u6709\u7684\u6578\u64da\u8868\u4e2d\u6dfb\u52a0\u65b0\u5b57\u6bb5\u3002\u9019\u53ef\u80fd\u662f\u56e0\u70ba\uff1a<\/p>\n<ul>\n<li>\u9700\u8981\u5b58\u5132\u984d\u5916\u7684\u4fe1\u606f\uff0c\u4f8b\u5982\u7528\u6236\u7684\u5730\u5740\u6216\u806f\u7e6b\u96fb\u8a71\u3002<\/li>\n<li>\u6539\u9032\u6578\u64da\u5206\u6790\uff0c\u901a\u904e\u6dfb\u52a0\u65b0\u7684\u6578\u64da\u985e\u578b\u4f86\u7372\u53d6\u66f4\u6df1\u5165\u7684\u898b\u89e3\u3002<\/li>\n<li>\u652f\u6301\u65b0\u7684\u529f\u80fd\u6216\u696d\u52d9\u6d41\u7a0b\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e6%b7%bb%e5%8a%a0%e6%96%b0%e5%ad%97%e6%ae%b5-XLEqlESSqu\">\u5982\u4f55\u6dfb\u52a0\u65b0\u5b57\u6bb5<\/h2>\n<p>\u5728MySQL\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u4f86\u6dfb\u52a0\u65b0\u5b57\u6bb5\u3002\u4ee5\u4e0b\u662f\u57fa\u672c\u7684\u8a9e\u6cd5\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d ADD COLUMN \u65b0\u5b57\u6bb5\u540d \u6578\u64da\u985e\u578b;<\/code><\/pre>\n<p>\u9019\u88e1\u7684\u201c\u8868\u540d\u201d\u662f\u60a8\u8981\u4fee\u6539\u7684\u6578\u64da\u8868\u7684\u540d\u7a31\uff0c\u201c\u65b0\u5b57\u6bb5\u540d\u201d\u662f\u60a8\u8981\u6dfb\u52a0\u7684\u5b57\u6bb5\u540d\u7a31\uff0c\u800c\u201c\u6578\u64da\u985e\u578b\u201d\u5247\u662f\u8a72\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\uff0c\u4f8b\u5982VARCHAR\u3001INT\u3001DATE\u7b49\u3002<\/p>\n<h3 id=\"%e7%a4%ba%e4%be%8b-XLEqlESSqu\">\u793a\u4f8b<\/h3>\n<p>\u5047\u8a2d\u60a8\u6709\u4e00\u500b\u540d\u70ba\u201cusers\u201d\u7684\u8868\uff0c\u4e26\u4e14\u60a8\u60f3\u8981\u6dfb\u52a0\u4e00\u500b\u540d\u70ba\u201cphone_number\u201d\u7684\u65b0\u5b57\u6bb5\uff0c\u6578\u64da\u985e\u578b\u70baVARCHAR(15)\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0bSQL\u8a9e\u53e5\uff1a<\/p>\n<pre><code>ALTER TABLE users ADD COLUMN phone_number VARCHAR(15);<\/code><\/pre>\n<p>\u57f7\u884c\u9019\u689d\u8a9e\u53e5\u5f8c\uff0c\u60a8\u5c07\u5728\u201cusers\u201d\u8868\u4e2d\u770b\u5230\u4e00\u500b\u65b0\u7684\u201cphone_number\u201d\u5b57\u6bb5\u3002<\/p>\n<h2 id=\"%e6%b7%bb%e5%8a%a0%e5%a4%9a%e5%80%8b%e5%ad%97%e6%ae%b5-XLEqlESSqu\">\u6dfb\u52a0\u591a\u500b\u5b57\u6bb5<\/h2>\n<p>\u5982\u679c\u60a8\u9700\u8981\u4e00\u6b21\u6027\u6dfb\u52a0\u591a\u500b\u5b57\u6bb5\uff0c\u53ef\u4ee5\u4f7f\u7528\u9017\u865f\u5206\u9694\u6bcf\u500b\u5b57\u6bb5\u7684\u5b9a\u7fa9\u3002\u4ee5\u4e0b\u662f\u8a9e\u6cd5\u793a\u4f8b\uff1a<\/p>\n<pre><code>ALTER TABLE \u8868\u540d \nADD COLUMN \u65b0\u5b57\u6bb5\u540d1 \u6578\u64da\u985e\u578b1,\nADD COLUMN \u65b0\u5b57\u6bb5\u540d2 \u6578\u64da\u985e\u578b2;<\/code><\/pre>\n<p>\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u60f3\u8981\u5728\u201cusers\u201d\u8868\u4e2d\u6dfb\u52a0\u201caddress\u201d\u548c\u201cbirthdate\u201d\u5169\u500b\u5b57\u6bb5\uff0c\u53ef\u4ee5\u9019\u6a23\u505a\uff1a<\/p>\n<pre><code>ALTER TABLE users \nADD COLUMN address VARCHAR(255),\nADD COLUMN birthdate DATE;<\/code><\/pre>\n<h2 id=\"%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a0%85-XLEqlESSqu\">\u6ce8\u610f\u4e8b\u9805<\/h2>\n<p>\u5728\u6dfb\u52a0\u65b0\u5b57\u6bb5\u6642\uff0c\u60a8\u9700\u8981\u8003\u616e\u4ee5\u4e0b\u5e7e\u9ede\uff1a<\/p>\n<ul>\n<li>\u78ba\u4fdd\u65b0\u5b57\u6bb5\u7684\u6578\u64da\u985e\u578b\u9069\u5408\u60a8\u8981\u5b58\u5132\u7684\u6578\u64da\u3002<\/li>\n<li>\u5982\u679c\u60a8\u5e0c\u671b\u65b0\u5b57\u6bb5\u5141\u8a31NULL\u503c\uff0c\u53ef\u4ee5\u5728\u6578\u64da\u985e\u578b\u5f8c\u6dfb\u52a0\u201cNULL\u201d\uff0c\u5426\u5247\u9ed8\u8a8d\u70ba\u201cNOT NULL\u201d\u3002<\/li>\n<li>\u5728\u751f\u7522\u74b0\u5883\u4e2d\u9032\u884c\u66f4\u6539\u4e4b\u524d\uff0c\u5efa\u8b70\u5148\u5728\u6e2c\u8a66\u74b0\u5883\u4e2d\u9032\u884c\u6e2c\u8a66\uff0c\u4ee5\u907f\u514d\u6f5b\u5728\u7684\u6578\u64da\u640d\u5931\u6216\u932f\u8aa4\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-XLEqlESSqu\">\u7e3d\u7d50<\/h2>\n<p>\u5728MySQL\u4e2d\u6dfb\u52a0\u65b0\u5b57\u6bb5\u662f\u4e00\u500b\u76f8\u5c0d\u7c21\u55ae\u7684\u904e\u7a0b\uff0c\u53ea\u9700\u4f7f\u7528ALTER TABLE\u8a9e\u53e5\u5373\u53ef\u5b8c\u6210\u3002\u7121\u8ad6\u662f\u70ba\u4e86\u6eff\u8db3\u696d\u52d9\u9700\u6c42\u9084\u662f\u6539\u9032\u6578\u64da\u5206\u6790\uff0c\u9019\u4e00\u64cd\u4f5c\u90fd\u80fd\u5e6b\u52a9\u60a8\u66f4\u597d\u5730\u7ba1\u7406\u6578\u64da\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u7a69\u5b9a\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u6258\u7ba1\u60a8\u7684MySQL\u6578\u64da\u5eab\uff0c\u9019\u5c07\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u66f4\u9ad8\u7684\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5b78\u7fd2\u5982\u4f55\u5728MySQL\u4e2d\u6dfb\u52a0\u65b0\u5b57\u6bb5\uff0c\u7c21\u55ae\u6b65\u9a5f\u6559\u60a8\u8f15\u9b06\u64f4\u5c55\u6578\u64da\u5eab\u7d50\u69cb\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-162941","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162941","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=162941"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162941\/revisions"}],"predecessor-version":[{"id":162942,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/162941\/revisions\/162942"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=162941"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=162941"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=162941"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}