{"id":76448,"date":"2024-10-16T06:45:15","date_gmt":"2024-10-15T22:45:15","guid":{"rendered":"https:\/\/server.hk\/cnblog\/76448\/"},"modified":"2024-10-16T06:45:16","modified_gmt":"2024-10-15T22:45:16","slug":"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%9f%a5%e8%ad%98%e5%a4%a7%e5%85%a8","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/76448\/","title":{"rendered":"MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u77e5\u8b58\u5927\u5168"},"content":{"rendered":"<h1 id=\"mysql%e6%95%b8%e6%93%9a%e5%ba%ab%e7%9a%84%e5%9f%ba%e6%9c%ac%e7%9f%a5%e8%ad%98%e5%a4%a7%e5%85%a8-cdKPgVtkuM\">MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u77e5\u8b58\u5927\u5168<\/h1>\n<p>MySQL\u662f\u4e00\u7a2e\u6d41\u884c\u7684\u958b\u6e90\u95dc\u806f\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u7db2\u7ad9\u548c\u61c9\u7528\u7a0b\u5e8f\u4e2d\u3002\u5b83\u4ee5\u5176\u9ad8\u6548\u6027\u3001\u7a69\u5b9a\u6027\u548c\u9748\u6d3b\u6027\u800c\u805e\u540d\uff0c\u7279\u5225\u662f\u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0eMySQL\u7684\u57fa\u672c\u77e5\u8b58\uff0c\u5305\u62ec\u5176\u67b6\u69cb\u3001\u6578\u64da\u985e\u578b\u3001\u67e5\u8a62\u8a9e\u8a00\u53ca\u5e38\u898b\u64cd\u4f5c\u3002<\/p>\n<h2 id=\"mysql%e7%9a%84%e6%9e%b6%e6%a7%8b-cdKPgVtkuM\">MySQL\u7684\u67b6\u69cb<\/h2>\n<p>MySQL\u7684\u67b6\u69cb\u4e3b\u8981\u7531\u4ee5\u4e0b\u5e7e\u500b\u90e8\u5206\u7d44\u6210\uff1a<\/p>\n<ul>\n<li><strong>\u5ba2\u6236\u7aef<\/strong>\uff1a\u7528\u6236\u901a\u904e\u5ba2\u6236\u7aef\u61c9\u7528\u7a0b\u5e8f\u8207MySQL\u670d\u52d9\u5668\u9032\u884c\u4ea4\u4e92\u3002<\/li>\n<li><strong>\u670d\u52d9\u5668<\/strong>\uff1a\u8ca0\u8cac\u8655\u7406\u6578\u64da\u5eab\u8acb\u6c42\uff0c\u57f7\u884c\u67e5\u8a62\u4e26\u8fd4\u56de\u7d50\u679c\u3002<\/li>\n<li><strong>\u5b58\u5132\u5f15\u64ce<\/strong>\uff1aMySQL\u652f\u6301\u591a\u7a2e\u5b58\u5132\u5f15\u64ce\uff0c\u5982InnoDB\u548cMyISAM\uff0c\u9019\u4e9b\u5f15\u64ce\u6c7a\u5b9a\u4e86\u6578\u64da\u7684\u5b58\u5132\u65b9\u5f0f\u548c\u6027\u80fd\u3002<\/li>\n<\/ul>\n<h2 id=\"%e6%95%b8%e6%93%9a%e9%a1%9e%e5%9e%8b-cdKPgVtkuM\">\u6578\u64da\u985e\u578b<\/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>\u6578\u503c\u985e\u578b<\/strong>\uff1a\u5305\u62ec\u6574\u6578\uff08\u5982INT\u3001TINYINT\uff09\u3001\u6d6e\u9ede\u6578\uff08\u5982FLOAT\u3001DOUBLE\uff09\u7b49\u3002<\/li>\n<li><strong>\u5b57\u7b26\u4e32\u985e\u578b<\/strong>\uff1a\u5305\u62ecCHAR\u3001VARCHAR\u3001TEXT\u7b49\uff0c\u9069\u5408\u5b58\u5132\u5b57\u7b26\u6578\u64da\u3002<\/li>\n<li><strong>\u65e5\u671f\u548c\u6642\u9593\u985e\u578b<\/strong>\uff1a\u5982DATE\u3001TIME\u3001DATETIME\u7b49\uff0c\u7528\u65bc\u5b58\u5132\u6642\u9593\u76f8\u95dc\u6578\u64da\u3002<\/li>\n<\/ul>\n<h2 id=\"sql%e6%9f%a5%e8%a9%a2%e8%aa%9e%e8%a8%80-cdKPgVtkuM\">SQL\u67e5\u8a62\u8a9e\u8a00<\/h2>\n<p>MySQL\u4f7f\u7528\u7d50\u69cb\u5316\u67e5\u8a62\u8a9e\u8a00\uff08SQL\uff09\u4f86\u9032\u884c\u6578\u64da\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684SQL\u8a9e\u53e5\u793a\u4f8b\uff1a<\/p>\n<h3 id=\"%e5%89%b5%e5%bb%ba%e6%95%b8%e6%93%9a%e5%ba%ab-cdKPgVtkuM\">\u5275\u5efa\u6578\u64da\u5eab<\/h3>\n<pre><code>CREATE DATABASE my_database;<\/code><\/pre>\n<h3 id=\"%e5%89%b5%e5%bb%ba%e8%a1%a8-cdKPgVtkuM\">\u5275\u5efa\u8868<\/h3>\n<pre><code>CREATE TABLE users (\n    id INT AUTO_INCREMENT PRIMARY KEY,\n    username VARCHAR(50) NOT NULL,\n    password VARCHAR(255) NOT NULL,\n    created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP\n);<\/code><\/pre>\n<h3 id=\"%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-cdKPgVtkuM\">\u63d2\u5165\u6578\u64da<\/h3>\n<pre><code>INSERT INTO users (username, password) VALUES ('user1', 'password123');<\/code><\/pre>\n<h3 id=\"%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-cdKPgVtkuM\">\u67e5\u8a62\u6578\u64da<\/h3>\n<pre><code>SELECT * FROM users WHERE username = 'user1';<\/code><\/pre>\n<h3 id=\"%e6%9b%b4%e6%96%b0%e6%95%b8%e6%93%9a-cdKPgVtkuM\">\u66f4\u65b0\u6578\u64da<\/h3>\n<pre><code>UPDATE users SET password = 'newpassword' WHERE username = 'user1';<\/code><\/pre>\n<h3 id=\"%e5%88%aa%e9%99%a4%e6%95%b8%e6%93%9a-cdKPgVtkuM\">\u522a\u9664\u6578\u64da<\/h3>\n<pre><code>DELETE FROM users WHERE username = 'user1';<\/code><\/pre>\n<h2 id=\"%e7%b4%a2%e5%bc%95%e8%88%87%e6%80%a7%e8%83%bd%e5%84%aa%e5%8c%96-cdKPgVtkuM\">\u7d22\u5f15\u8207\u6027\u80fd\u512a\u5316<\/h2>\n<p>\u7d22\u5f15\u662f\u63d0\u9ad8\u67e5\u8a62\u6027\u80fd\u7684\u91cd\u8981\u5de5\u5177\u3002\u901a\u904e\u5728\u8868\u7684\u67d0\u4e9b\u5217\u4e0a\u5275\u5efa\u7d22\u5f15\uff0c\u53ef\u4ee5\u52a0\u901f\u67e5\u8a62\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u5275\u5efa\u7d22\u5f15\u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>CREATE INDEX idx_username ON users (username);<\/code><\/pre>\n<p>\u6b64\u5916\uff0c\u5b9a\u671f\u9032\u884c\u6578\u64da\u5eab\u7684\u6027\u80fd\u512a\u5316\uff0c\u5982\u6e05\u7406\u4e0d\u5fc5\u8981\u7684\u6578\u64da\u3001\u91cd\u5efa\u7d22\u5f15\u7b49\uff0c\u80fd\u5920\u986f\u8457\u63d0\u5347\u6578\u64da\u5eab\u7684\u904b\u884c\u6548\u7387\u3002<\/p>\n<h2 id=\"%e5%82%99%e4%bb%bd%e8%88%87%e6%81%a2%e5%be%a9-cdKPgVtkuM\">\u5099\u4efd\u8207\u6062\u5fa9<\/h2>\n<p>\u6578\u64da\u7684\u5b89\u5168\u6027\u81f3\u95dc\u91cd\u8981\uff0c\u5b9a\u671f\u5099\u4efd\u6578\u64da\u5eab\u662f\u9632\u6b62\u6578\u64da\u4e1f\u5931\u7684\u6709\u6548\u63aa\u65bd\u3002MySQL\u63d0\u4f9b\u4e86\u591a\u7a2e\u5099\u4efd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528mysqldump\u5de5\u5177\u9032\u884c\u908f\u8f2f\u5099\u4efd\uff1a<\/p>\n<pre><code>mysqldump -u username -p my_database &gt; backup.sql<\/code><\/pre>\n<p>\u6062\u5fa9\u6578\u64da\u5eab\u5247\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\uff1a<\/p>\n<pre><code>mysql -u username -p my_database &lt; backup.sql<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-cdKPgVtkuM\">\u7e3d\u7d50<\/h2>\n<p>MySQL\u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u6578\u64da\u5eab\u7ba1\u7406\u7cfb\u7d71\uff0c\u64c1\u6709\u8c50\u5bcc\u7684\u529f\u80fd\u548c\u9748\u6d3b\u7684\u67b6\u69cb\uff0c\u9069\u5408\u5404\u7a2e\u61c9\u7528\u5834\u666f\u3002\u7121\u8ad6\u662f\u5275\u5efa\u6578\u64da\u5eab\u3001\u57f7\u884c\u67e5\u8a62\uff0c\u9084\u662f\u9032\u884c\u6027\u80fd\u512a\u5316\u548c\u6578\u64da\u5099\u4efd\uff0c\u638c\u63e1MySQL\u7684\u57fa\u672c\u77e5\u8b58\u5c0d\u65bc\u958b\u767c\u8005\u548c\u7cfb\u7d71\u7ba1\u7406\u54e1\u4f86\u8aaa\u90fd\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002\u82e5\u60a8\u9700\u8981\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\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\u652f\u6301\u60a8\u7684\u61c9\u7528\u7a0b\u5e8f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22MySQL\u6578\u64da\u5eab\u7684\u57fa\u672c\u77e5\u8b58\uff0c\u6db5\u84cb\u5b89\u88dd\u3001\u67e5\u8a62\u3001\u6578\u64da\u7ba1\u7406\u53ca\u6700\u4f73\u5be6\u8e10\uff0c\u52a9\u60a8\u8f15\u9b06\u638c\u63e1\u6578\u64da\u5eab\u6280\u80fd\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-76448","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76448","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=76448"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76448\/revisions"}],"predecessor-version":[{"id":76449,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/76448\/revisions\/76449"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=76448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=76448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=76448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}