{"id":3233,"date":"2014-11-09T12:58:50","date_gmt":"2014-11-09T04:58:50","guid":{"rendered":"https:\/\/sdeno.com\/?p=3233"},"modified":"2019-05-10T10:49:08","modified_gmt":"2019-05-10T02:49:08","slug":"mysql%e5%88%9b%e5%bb%ba%e6%95%b0%e6%8d%ae%e5%ba%93%e5%bb%ba%e8%a1%a8%e5%ad%97%e6%ae%b5%e5%ae%9e%e4%be%8b","status":"publish","type":"post","link":"https:\/\/sdeno.com\/?p=3233","title":{"rendered":"mysql\u521b\u5efa\u6570\u636e\u5e93\u5efa\u8868\u5b57\u6bb5\u5b9e\u4f8b"},"content":{"rendered":"<p>mysql\u6848\u4f8b mysql\u7b14\u8bb0<\/p>\n<p>\u53c2\u8003\u770b\u300a<a href=\"https:\/\/sdeno.com\/?p=2909\" target=\"_blank\" rel=\"noopener\">mysql\u6570\u636e\u5e93\u7b14\u8bb0<\/a>\u300b<\/p>\n<p>\u6570\u636e\u5e93\u5b57\u7b26\u96c6\u7684\u4fee\u6539\u8bbe\u7f6e\u300a<a href=\"https:\/\/sdeno.com\/?p=3140\" target=\"_blank\" rel=\"noopener\">\u89e3\u51b3php\u8f93\u51fa\u6587\u672c\u51fa\u73b0\u4e71\u7801<\/a>\u300b<\/p>\n<p>\u300a<a href=\"https:\/\/sdeno.com\/?p=6746\" target=\"_blank\" rel=\"noopener\">mysql\u6570\u636e\u5e93\u5b58\u50a8\u8fc7\u7a0b<\/a>\u300b<\/p>\n<p>php\u548cmysql\u4ea4\u4e92<a href=\"https:\/\/sdeno.com\/?p=5456\" target=\"_blank\" rel=\"noopener\">\u00a0https:\/\/sdeno.com\/?p=5456<\/a><\/p>\n<p>\u94fe\u63a5\u6570\u636e\u5e93<\/p>\n<pre>mysql.exe -h\u5730\u5740 -u\u7528\u6237\u540d -p\u5bc6\u7801<\/pre>\n<p>&nbsp;<\/p>\n<p>1\uff0c\u521b\u5efa\u6570\u636e\u5e93<\/p>\n<pre>CREATE DATABASE `liuyan`\r\nCHARACTER SET 'utf8'  \/\/\u542c\u8bf4utf8mb4 \u624d\u662f\u771f\u6b63\u7684utf8\r\nCOLLATE 'utf8_general_ci';<\/pre>\n<p>2\uff0c\u9009\u62e9\u6570\u636e\u5e93\uff08\u9009\u62e9\u540e\u624d\u80fd\u521b\u5efa\u8868\u548c\u5b57\u6bb5\uff09<\/p>\n<pre> use liuyan;<\/pre>\n<p>3\uff0c\u8bbe\u7f6e\u5b57\u7b26\u96c6<\/p>\n<pre>set names utf8;<\/pre>\n<p>4\uff0c\u521b\u5efa\u8868\u548c\u5b57\u6bb5<\/p>\n<pre>CREATE TABLE `liuyan_user` (\r\n`id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,\r\n`liuyan_username` varchar(40) NOT NULL default '',\r\n`liuyan_userpass` char(40) NOT NULL default '',\r\n`liuyan_prompt` varchar(40) NOT NULL default '',\r\n`liuyan_answer` varchar(40) NOT NULL default '',\r\n`liuyan_sex` varchar(4) NOT NULL default '',\r\n`liuyan_pic` varchar(40) NOT NULL default '',\r\n`liuyan_email` varchar(40) NOT NULL default '',\r\n`liuyan_qq` varchar(20) NOT NULL default '',\r\n`liuyan_url` varchar(40) NOT NULL default ''\r\n) ENGINE=InnoDB DEFAULT CHARSET=utf8;\r\n\r\n\r\n<span style=\"color: #ff0000;\">\u5199\u591a\u8bfb\u5c11<\/span>\u9009InnoDB\r\n<span style=\"color: #ff0000;\">\u8bfb\u591a\u5199\u5c11<\/span>\u9009MyISAM \/\/\u9ed8\u8ba4\u662f\u8fd9\u4e2a\r\n\r\n\r\n<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u5bf9\u6570\u636e\u7684\u589e\u3001\u5220\u3001\u6539\u3001\u67e5\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u589e\uff1a<\/p>\n<pre>\u521b\u5efa\u5e93\r\nCREATE DATABASE `test2`;\r\n\r\n\u521b\u5efa\u6570\u636e\u5e93\uff0c\u5e76\u4e14\u9632\u6b62\u62a5\u9519\r\ncreate database if not exists \u6570\u636e\u5e93\u540d;\r\n\r\n\u521b\u5efa\u5b57\u7b26\u96c6\u7f16\u7801\u4e3agbk\u7684\u6570\u636e\u5e93\r\ncreate database if not exists \u6570\u636e\u5e93\u540d character set gbk;\r\n\r\n\u521b\u5efa\u5e93\uff08\u63a8\u8350\uff09\r\nCREATE DATABASE `liuyan`\r\nCHARACTER SET 'utf8'\r\nCOLLATE 'utf8_general_ci';\r\n\u521b\u5efa\u6570\u636e\u5e93\u4ee5\u53ca\u9632\u6b62\u51fa\u73b0\u4e71\u7801\u7684\u6ce8\u610f\u4e8b\u9879\uff1a\u300a<a href=\"https:\/\/sdeno.com\/?p=3140\" target=\"_blank\" rel=\"noopener\">\u89e3\u51b3php\u8f93\u51fa\u6587\u672c\u51fa\u73b0\u4e71\u7801<\/a>\u300b\r\n\r\n\u63d2\u5165\u6570\u636e\r\ninsert into \u8868 valus(\u2018\u503c1\u2032,\u2019\u503c2\u2032,\u2019\u503c3\u2032,..);\r\ninsert into \u8868(\u5b57\u6bb51,\u5b57\u6bb52,\u5b57\u6bb53,..) values (\u2018\u5b57\u6bb51\u503c\u2019,\u2019\u5b57\u6bb52\u503c\u2019,\u2019\u5b57\u6bb53\u503c\u2019,..);\r\n\r\n\u6dfb\u52a0\u8868\r\nalter table \u8868\u540d add \u5b57\u6bb5\u540d varchar(30) not null;\r\n\r\n\u5728\u5b57\u6bb5\u540d2\u7684\u540e\u9762\u63d2\u5165\u5b57\u6bb5\u540d1\r\nalter table \u8868\u540d add \u5b57\u6bb5\u540d1 varchar(30) not null after \u5b57\u6bb5\u540d2;\r\n\r\n\u6700\u524d\u9762\u63d2\u5165\r\nalter table \u8868\u540d add \u5b57\u6bb5\u540d varchar(30) first;\r\n\r\n\u590d\u5236\u8868\r\nCREATE table \u65b0\u8868\u540d LIKE \u88ab\u590d\u5236\u7684\u8868; \/\/\u590d\u5236\u8868\u7684\u7ed3\u6784\u4e0d\u542b\u5185\u5bb9\r\ncreate table \u65b0\u8868\u540d select * from \u88ab\u590d\u5236\u7684\u8868; \/\/\u5b8c\u5168\u590d\u5236\u5305\u62ec\u5185\u5bb9\r\ncreate table \u65b0\u8868\u540d select \u5b57\u6bb51,\u5b57\u6bb52 from \u88ab\u590d\u5236\u7684\u8868; \/\/\u53ea\u590d\u5236\u6307\u5b9a\u5b57\u6bb5<\/pre>\n<p>&nbsp;<\/p>\n<p>\u5220\uff1a<\/p>\n<pre>drop database \u5e93\u540d; \/\/\u5220\u9664\u5e93\r\n\r\ndrop database if exists \u6570\u636e\u5e93\u540d; \/\/\u5220\u9664\u5e93,\u5e76\u4e14\u9632\u6b62\u62a5\u9519\r\n\r\ndrop table \u8868\u540d; \/\/\u5220\u9664\u8868\u540d\r\n\r\nalter table \u8868\u540d drop \u5220\u9664\u7684\u5b57\u6bb5\u540d; \/\/\u5220\u9664\u5b57\u6bb5\u540d\r\n\r\ndelete from \u8868 where id=2; \/\/\u5220\u9664id\u662f2\u7684\u90a3\u6761\u6570\u636e\r\n\r\nDELETE FROM \u8868 WHERE id IN (1,2,3,4); \/\/\u6279\u91cf\u5220\u9664id\u4e3a1\uff0c2\uff0c3\uff0c4\u7684\u6570\u636e\r\n\r\ntruncate table \u8868\u540d;  \u6216\u8005  <span style=\"color: #3e3e3e;\">delete from \u8868\u540d;<\/span> \/\/\u6e05\u7a7a\u8868\u5185\u5bb9<\/pre>\n<p>&nbsp;<\/p>\n<p>\u6539\uff1a<\/p>\n<pre>\u6539\u5b57\u6bb5\u5185\u5bb9\r\n\u4ec0\u4e48\u6761\u4ef6\u627e\u5230\u90a3\u6761\u6570\u636e\u53bb\u4fee\u6539\u6307\u5b9a\u7684\u5185\u5bb9\uff08\u952e\u53ef\u4ee5\u6839\u636eid\u6216\u8005\u5176\u4ed6\u5b57\u6bb5\u540d\u5f53\u505a\u641c\u7d22\u6761\u4ef6\uff09\r\nupdate \u8868 set \u5b57\u6bb5=\"\u4fee\u6539\u5185\u5bb9\",\u5b57\u6bb5=\"\u4fee\u6539\u5185\u5bb9\" where \u952e=\u503c;\r\n\r\n\u6539\u8868\u540d\r\nalter table \u539f\u8868\u540d rename as \u6539\u8868\u540d;\r\n\r\n\u6539\u5b57\u6bb5\u540d\r\nALTER TABLE \u8868\u540d CHANGE \u65e7\u5b57\u6bb5\u540d \u65b0\u5b57\u6bb5\u540d \u65b0\u6570\u636e\u7c7b\u578b;\r\n\r\n\u6539\u5b57\u6bb5\u7c7b\u578b\r\nalter table \u8868\u540d modify \u5b57\u6bb5\u540d \u8981\u4fee\u6539\u7684\u7c7b\u578b;\r\n\r\n\u6539\u8868\u5b57\u7b26\u96c6\r\nALTER TABLE \u8868\u540d CONVERT TO CHARACTER SET gbk COLLATE gbk_chinese_ci;\r\nALTER TABLE \u8868\u540d CONVERT TO CHARACTER SET utf8 COLLATE utf8_general_ci;\r\n\r\n\u4fee\u6539\u6570\u636e\u5e93\u5b57\u7b26\u96c6\u7f16\u7801\r\nalter database \u6570\u636e\u5e93\u540d character set = utf8;\r\n\r\n\u6539\u987a\u5e8f\r\nSELECT * FROM \u8868\u540d ORDER BY `\u65f6\u95f4\u7684\u5b57\u6bb5` DESC; \/\/\u6309\u7167\u65f6\u95f4\u5012\u5e8f\u6392\u5217\u6570\u636e\uff08\u6b63\u5e8fASC\uff09\r\n\r\n\r\n\u6279\u91cf\u4fee\u6539\u67d0\u5b57\u6bb5\u4e3a\u7edf\u4e00\u5185\u5bb9\r\nupdate \u8868 set \u5b57\u6bb5='2222';\r\n\r\n\u6279\u91cf\u66ff\u6362\u6307\u5b9a\u5b57\u7b26\u4e32\r\nUPDATE \u8868\u540d SET \u6307\u5b9a\u5b57\u6bb5 = replace (\u6307\u5b9a\u5b57\u6bb5, '\u60f3\u8981\u66ff\u6362\u7684\u5b57\u7b26\u4e32', '\u66ff\u6362\u6210\u7684\u5b57\u7b26\u4e32') WHERE \u6761\u4ef6;<\/pre>\n<p>&nbsp;<\/p>\n<p>\u67e5\uff1a<\/p>\n<pre>SHOW DATABASES; \/\/\u67e5\u770b\u5168\u90e8\u6570\u636e\u5e93\r\nSELECT DATABASE(); \/\/\u67e5\u770b\u5f53\u524d\u9009\u4e2d\u7684\u54ea\u4e2a\u6570\u636e\u5e93\r\nSHOW TABLES; \/\/\u67e5\u770b\u5f53\u524d\u9009\u4e2d\u6570\u636e\u5e93\u7684\u8868\r\nSELECT * FROM \u8868\u540d; \/\/\u67e5\u770b\u6574\u5f20\u8868\u5b57\u6bb5\u5185\u5bb9\r\nDESCRIBE \u8868\u540d; \/\/\u67e5\u770b\u6574\u5f20\u8868\u5b57\u6bb5\u7c7b\u578b\u4fe1\u606f\r\n\r\n\r\nSELECT * FROM \u8868\u540d WHERE \u5b57\u6bb5\u540d='\u7b5b\u9009\u5185\u5bb9';\/\/\u7b5b\u9009\u6307\u5b9a\u6761\u4ef6\u7684\u6240\u6709\u6570\u636e\r\nSELECT * FROM \u8868\u540d ORDER BY `\u65f6\u95f4\u7684\u5b57\u6bb5` DESC; \/\/\u6309\u7167\u65f6\u95f4\u5012\u5e8f\u6392\u5217\u6570\u636e\uff08\u6b63\u5e8fASC\uff09\r\nSELECT * FROM \u8868\u540d LIMIT 0,10 \/\/\u4ece\u7b2c\u4e00\u6761\u5f00\u59cb\u67e5\u627e\u524d10\u6761\u6570\u636e\r\n\r\n\u4f8b\u5b50\uff1aselect * from users where bonus=0 order by id desc limit 0,10;\r\nSELECT COUNT(*) FROM \u8868 \/\/\u67e5\u8be2\u8868\u6709\u591a\u5c11\u6761\u6570\u636e\r\n\r\n\u67e5\u770bmysql\u7248\u672c\r\nselect version();\r\n\r\n\u5f53\u524d\u65f6\u95f4\r\nselect now();\r\n\r\n\u5f53\u524d\u662f\u54ea\u4e2a\u7528\u6237\u767b\u5f55\u7684\r\nselect user();\r\n\r\n\u67e5\u770b\u521b\u5efa\u8fd9\u4e2a\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6\u7f16\u7801\r\nshow create database \u6570\u636e\u5e93\u540d;\r\nSHOW VARIABLES LIKE 'character%'; \/\/\u540c\u4e0a\r\n\r\n\u67e5\u770b\u5f53\u524d\u64cd\u4f5c\u7684\u6570\u636e\u5e93\u540d\r\nselect database();\r\n\r\n\u67e5\u770b\u5176\u4ed6\u5e93\u7684\u6240\u6709\u8868\r\nshow tables from \u6570\u636e\u5e93\u540d;\r\n\r\n\/\u67e5\u770b\u8868\u7684\u6570\u636e\u7ed3\u6784\r\nshow columns from \u8868\u540d;<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u8ba1\u7b97<\/p>\n<p>\u52a0\u3001\u51cf\u3001\u4e58\u3001\u9664<\/p>\n<pre>mysql&gt; SELECT 3+4;\r\nmysql&gt; SELECT 3\/4;<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<pre>\/\/\u6574\u6570\u8fdb\u4e00\u4f4d\r\nmysql&gt; SELECT CEIL(3.01);  \/\/4\r\n\r\n\/\/\u76f8\u53cd\r\nmysql&gt; SELECT FLOOR(3.99); \/\/3<\/pre>\n<p>&nbsp;<\/p>\n<pre>\/\/\u53d6\u6574\r\nmysql&gt; SELECT 3 DIV 4;  \/\/0\r\n\r\n\/\/\u53d6\u4f59\r\nmysql&gt; SELECT 3 DIV 4; \/\/3<\/pre>\n<p>&nbsp;<\/p>\n<pre>\/\/\u56db\u820d\u4e94\u5165\r\nmysql&gt; SELECT ROUND(3.652,2); \/\/3.65\r\n\r\nmysql&gt; SELECT ROUND(3.652,1); \/\/3.7<\/pre>\n<p>&nbsp;<\/p>\n<pre>\/\/\u622a\u53d6\r\nSELECT TRUNCATE(125.89,2);  \/\/125.89\r\nSELECT TRUNCATE(125.89,1);  \/\/125.8\r\nSELECT TRUNCATE(125.89,0);  \/\/125\r\nSELECT TRUNCATE(125.89,-1); \/\/120<\/pre>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>\u5907\u4efd\uff1a<\/p>\n<pre>mysqldump -u \u5e10\u53f7 -p -h\u5730\u5740 \u6570\u636e\u5e93 &gt;\u5907\u4efd\u540e\u540d\u79f0.sql<\/pre>\n<p>\u8fd8\u539f\uff1a<\/p>\n<p>1\uff0c\u5148\u521b\u5efa\u4e00\u4e2a\u7a7a\u7684\u6570\u636e\u5e93<\/p>\n<pre>CREATE DATABASE `test2`;  \/\/\u63a5\u7740\u53f3\u952e\u5982\u4e0b\u56fe<\/pre>\n<a href=\"https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/mysql_2.jpg\"><figure class=\"mdx-lazyload-container\" style=\"max-width:689px\"><div style=\"padding-top:56.313497822932%\"><\/div><div class=\"mdx-img-loading-sp mdui-valign\"><div><div class=\"mdui-spinner\"><\/div><\/div><\/div><img width=\"689\" height=\"388\" class=\"alignnone size-full wp-image-4375 lazyload\" title=\"mysql_2\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/mysql_2.jpg\" alt=\"mysql_2\" data-srcset=\"https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/mysql_2.jpg 689w, https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/mysql_2-300x168.jpg 300w, https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/mysql_2-624x351.jpg 624w\" sizes=\"auto, (max-width: 689px) 100vw, 689px\"><\/figure><\/a>\n<p>&nbsp;<\/p>\n<p>mysql\u7ed3\u5408php\u5b9e\u4f8b<\/p>\n<a href=\"https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/phpforex.jpg\"><figure class=\"mdx-lazyload-container\" style=\"max-width:825px\"><div style=\"padding-top:65.333333333333%\"><\/div><div class=\"mdx-img-loading-sp mdui-valign\"><div><div class=\"mdui-spinner\"><\/div><\/div><\/div><img width=\"825\" height=\"539\" class=\"alignnone size-full wp-image-4331 lazyload\" title=\"phpforex\" src=\"data:image\/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==\" data-src=\"https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/phpforex.jpg\" alt=\"phpforex\" data-srcset=\"https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/phpforex.jpg 825w, https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/phpforex-300x196.jpg 300w, https:\/\/sdeno.com\/wp-content\/uploads\/2014\/11\/phpforex-624x407.jpg 624w\" sizes=\"auto, (max-width: 825px) 100vw, 825px\"><\/figure><\/a>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/mp.weixin.qq.com\/s?__biz=MjM5NzA1MTcyMA==&amp;mid=208499295&amp;idx=4&amp;sn=33c0caeb3903b39c4ac7d72fbdf13f1f&amp;scene=1#wechat_redirect\" target=\"_blank\" rel=\"noopener\">\u00a0http:\/\/mp.weixin.qq.com\/s?__biz=MjM5NzA1MTcyMA==&amp;mid=208499295&amp;idx=4&amp;sn=33c0caeb3903b39c4ac7d72fbdf13f1f&amp;scene=1#wechat_redirect<\/a><\/p>\n<p><audio style=\"display: none;\" controls=\"controls\"><\/audio><\/p>\n<p><audio style=\"display: none;\" controls=\"controls\"><\/audio><\/p>\n<p><audio style=\"display: none;\" controls=\"controls\"><\/audio><\/p>\n<p><audio style=\"display: none;\" controls=\"controls\"><\/audio><\/p>\n","protected":false},"excerpt":{"rendered":"<p>mysql\u6848\u4f8b mysql\u7b14\u8bb0 \u53c2\u8003\u770b\u300amysql\u6570\u636e\u5e93\u7b14\u8bb0\u300b \u6570\u636e\u5e93\u5b57\u7b26\u96c6\u7684\u4fee\u6539\u8bbe\u7f6e\u300a\u89e3\u51b3php\u8f93\u51fa\u6587\u672c\u51fa\u73b0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"class_list":["post-3233","post","type-post","status-publish","format-standard","hentry","category-php"],"_links":{"self":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/3233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3233"}],"version-history":[{"count":0,"href":"https:\/\/sdeno.com\/index.php?rest_route=\/wp\/v2\/posts\/3233\/revisions"}],"wp:attachment":[{"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sdeno.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}