{"id":2006,"date":"2020-07-29T23:06:27","date_gmt":"2020-07-29T15:06:27","guid":{"rendered":"http:\/\/39.97.231.10\/?p=2006"},"modified":"2020-07-29T23:06:27","modified_gmt":"2020-07-29T15:06:27","slug":"mysql%e4%bf%ae%e6%94%b9%e5%ad%97%e7%ac%a6%e9%9b%86","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=2006","title":{"rendered":"MySQL\u4fee\u6539\u5b57\u7b26\u96c6"},"content":{"rendered":"<div class=\\\"blog_title\\\">\n<div>\n<span style=\\\"color: #1e73be; font-size: 1.15385rem;\\\">\u4e00\u3001\u4fee\u6539\u5b57\u7b26\u96c6<\/span>\n<\/div>\n<\/div>\n<div class=\\\"blog_content\\\">\n<div class=\\\"blog_detail\\\">\n1\u3001\u4fee\u6539\u6570\u636e\u5e93\u5b57\u7b26\u96c6<br \/>\nalter database db_new charset utf8mb4;<br \/>\n2\u3001\u4fee\u6539\u8868\u5b57\u7b26\u96c6<br \/>\nalter table tb charset=utf8mb4;<br \/>\n3\u3001\u4fee\u6539\u8868\u5b57\u7b26\u96c6\u548c\u6821\u9a8c\u89c4\u5219<br \/>\nalter table tb charset=utf8mb4 collate=utf8mb4_general_ci;<br \/>\n4\u3001\u4fee\u6539\u8868\u5b57\u6bb5\u7684\u5b57\u7b26\u96c6\u548c\u6821\u9a8c\u89c4\u5219<br \/>\nalter table tb modify name varchar(50) character set utf8 collate utf8_general_ci;<\/p>\n<h5>\u4e8c\u3001\u914d\u7f6e\u6587\u4ef6\u4fee\u6539\u5b57\u7b26\u96c6<\/h5>\n<p>\u4fee\u6539MySQL\u914d\u7f6e\u6587\u4ef6my.cnf<br \/>\n[mysqld]<br \/>\ncharacter_set_server=utf8mb4<br \/>\n\u901a\u5e38\u5728my.cnf\u6587\u4ef6\u4e2d\u4fee\u6539character_set_server\u5c31\u8db3\u591f\u4e86\uff0c\u4e0b\u9762\u8fd9\u4e9b\u914d\u7f6e\u9879\u4f1a\u968f\u7740character_set_server\u7684\u53d8\u66f4\u800c\u53d8\u66f4\uff0c\u4f46\u662f\u5982\u679c\u60f3\u81ea\u5b9a\u4e49\u67d0\u4e9b\u53c2\u6570\u7684\u5b57\u7b26\u96c6\u6216\u8005\u6821\u9a8c\u89c4\u5219\uff0c\u53ef\u4ee5\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u5355\u72ec\u4e3a\u5176\u6307\u5b9a\u5b57\u7b26\u96c6\u548c\u6821\u9a8c\u89c4\u5219\u3002<br \/>\ncharacter_set_client=utf8<br \/>\ncharacter_set_connection=utf8<br \/>\ncharacter_set_database=utf8<br \/>\ncharacter_set_results=utf8<br \/>\ncharacter_set_system=utf8<br \/>\ncollation_connection=utf8_general_ci<br \/>\ncollation_database=utf8_general_ci<br \/>\ncollation_server=utf8_general_ci<br \/>\n\u5efa\u8bae\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6\u548c\u6821\u9a8c\u89c4\u5219\u8981\u7edf\u4e00\uff0c\u5b57\u7b26\u96c6\u4e0d\u540c\uff0c\u4f1a\u5bfc\u81f4\u67d0\u4e9b\u573a\u666f\u4e0b\uff0c\u6bd4\u5982join\u8fde\u63a5\u5b57\u6bb5\u5b57\u7b26\u96c6\u4e0d\u540c\uff0c\u53ef\u80fd\u5bfc\u81f4\u65e0\u6cd5\u8d70\u7d22\u5f15\uff0c\u5f71\u54cdSQL\u6267\u884c\u6027\u80fd\u3002<\/p>\n<h5>\u4e09\u3001\u67e5\u770b\u5b57\u7b26\u96c6<\/h5>\n<p>1\u3001\u67e5\u770b\u6570\u636e\u5e93\u652f\u6301\u7684\u5b57\u7b26\u96c6\uff1a<br \/>\nselect * from information_schema.character_sets;<br \/>\n2\u3001\u67e5\u770b\u6570\u636e\u5e93\u652f\u6301\u7684\u68c0\u9a8c\u89c4\u5219\uff1a<br \/>\nselect * from information_schema.collations;<br \/>\n3\u3001\u67e5\u770b\u8868\u5b57\u7b26\u96c6\u53ca\u68c0\u9a8c\u89c4\u5219\uff1a<br \/>\nshow create table tb\\\\G<br \/>\nselect * from information_schema.tables where table_name=\\&#8217;tb\\&#8217;\\\\G\n<\/p><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u4e00\u3001\u4fee\u6539\u5b57\u7b26\u96c6 1\u3001\u4fee\u6539\u6570\u636e\u5e93\u5b57\u7b26\u96c6 alter database db_new charset utf8mb &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=2006\"> <span class=\"screen-reader-text\">MySQL\u4fee\u6539\u5b57\u7b26\u96c6<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[90,88],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"\u4e00\u3001\u4fee\u6539\u5b57\u7b26\u96c6 1\u3001\u4fee\u6539\u6570\u636e\u5e93\u5b57\u7b26\u96c6 alter database db_new charset utf8mb&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/2006"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2006"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/2006\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2006"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2006"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2006"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}