{"id":66,"date":"2020-12-28T19:30:09","date_gmt":"2020-12-28T11:30:09","guid":{"rendered":"https:\/\/www.52dixiaowo.com\/database\/?p=66"},"modified":"2020-12-29T15:22:29","modified_gmt":"2020-12-29T07:22:29","slug":"mysql-%e6%95%b0%e6%8d%ae%e7%bc%96%e7%a0%81","status":"publish","type":"post","link":"https:\/\/www.52dixiaowo.com\/db\/post-66.html","title":{"rendered":"mysql \u6570\u636e\u7f16\u7801"},"content":{"rendered":"\n<h5 class=\"has-text-align-center\">\u67e5\u770b mysql \u76f8\u5173\u7f16\u7801\u8bbe\u7f6e<\/h5>\n\n\n\n<p>\u67e5\u770b mysql \u76f8\u5173\u7f16\u7801<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>show variables like 'character%';<\/code><\/pre>\n\n\n\n<p>mysql \u7f16\u7801\u8bbe\u7f6e\u76f8\u5173\u6709 8 \u4e2a\u5c5e\u6027\uff0c\u5982\u4e0b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql&gt; show variables like 'character%';\n+--------------------------+---------------------------------------------------------+\n| Variable_name            | Value                                                   |\n+--------------------------+---------------------------------------------------------+\n| character_set_client     | utf8mb4                                                 |\n| character_set_connection | utf8mb4                                                 |\n| character_set_database   | utf8mb4                                                 |\n| character_set_filesystem | binary                                                  |\n| character_set_results    | utf8mb4                                                 |\n| character_set_server     | utf8mb4                                                 |\n| character_set_system     | utf8                                                    |\n| character_sets_dir       | C:\\Program Files\\MySQL\\MySQL Server 8.0\\share\\charsets\\ |\n+--------------------------+---------------------------------------------------------+<\/code><\/pre>\n\n\n\n<h5 class=\"has-text-align-center\">client, connection, results<\/h5>\n\n\n\n<p>\u5ba2\u6237\u7aef\u7f16\u7801\uff0c\u4e0e\u8fde\u63a5\u7f16\u7801\uff0c\u4e0e\u8fd4\u56de\u7f16\u7801\u5fc5\u987b\u4fdd\u6301\u4e00\u81f4\uff0c\u8fd9\u4e09\u4e2a\u7f16\u7801\u9ed8\u8ba4\u662f\u4e00\u81f4\u7684\u3002<\/p>\n\n\n\n<ul><li>set character_set_client = charset_name; <\/li><li>set character_set_connection = charset_name;<\/li><li>set character_set_results = charset_name;<\/li><\/ul>\n\n\n\n<p>\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\uff0c\u5b8c\u6210\u5bf9\u8fd9\u4e09\u4e2a\u7f16\u7801\u7684\u7edf\u4e00\u8bbe\u7f6e\u3002<\/p>\n\n\n\n<p>\u5b9e\u4f8b\uff1a\u4f8b\u5982\u7edf\u4e00\u8bbe\u7f6e\u4e3a uft8mb4 \u7684\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>set names utf8mb4;<\/code><\/pre>\n\n\n\n<h5 class=\"has-text-align-center\">database, server<\/h5>\n\n\n\n<p>\u6570\u636e\u5e93\u9ed8\u8ba4\u7f16\u7801\u662f  character_set_database \uff0c\u901a\u8fc7 set \u547d\u4ee4\u4fee\u6539\uff0c\u4e0b\u9762\u6f14\u793a\u4ece utf8mb4 \u8f6c\u4e3a utf8\u3002<\/p>\n\n\n\n<p>\uff08\u6ce8\u610f\uff1aset \u547d\u4ee4\u53ea\u662f\u4e34\u65f6\u751f\u6548\uff0c\u63a8\u51fa\u540e\u56de\u5230\u9ed8\u8ba4\u503c\uff0c\u5728\u5b89\u88c5\u76ee\u5f55\u4e0b my.ini \u4fee\u6539\uff09<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql&gt; show variables like 'character_set_database%';\n+------------------------+---------+\n| Variable_name          | Value   |\n+------------------------+---------+\n| character_set_database | utf8mb4 |\n+------------------------+---------+\n1 row in set (0.07 sec)\n\nmysql&gt; set character_set_database = utf8;\nQuery OK, 0 rows affected (0.00 sec)\n\nmysql&gt; show variables like 'character_set_database%';\n+------------------------+-------+\n| Variable_name          | Value |\n+------------------------+-------+\n| character_set_database | utf8  |\n+------------------------+-------+\n1 row in set (0.06 sec)\n<\/code><\/pre>\n\n\n\n<p>\u670d\u52a1\u5668\u7f16\u7801\u662f character_set_server \uff0c\u8fd9\u4e2a\u4e00\u822c\u4e0d\u7528\u6539\uff0c\u4fee\u6539\u65b9\u5f0f\u4e0e db \u76f8\u4f3c\u3002<\/p>\n\n\n\n<h5 class=\"has-text-align-center\">\u4e09\u4e2a\u4e0d\u9700\u8981\u5173\u5fc3\u7684\u7f16\u7801\u8bbe\u7f6e<\/h5>\n\n\n\n<p>\u8fd8\u6709\u5269\u4e0b\u7684 3 \u4e2a\u7f16\u7801\uff0c\u662f\u4e0d\u9700\u8981\u6211\u4eec\u5173\u5fc3\u7684\uff0c\u5206\u522b\u662f <\/p>\n\n\n\n<ul><li>character_set_filesystem    \/\/\u6587\u4ef6\u7cfb\u7edf\u4f7f\u7528\u7684\u7f16\u7801<\/li><li>character_set_system         \/\/\u7cfb\u7edf\u4f7f\u7528\u7f16\u7801<\/li><li>character_sets_dir            \/\/\u5b57\u7b26\u5b89\u88c5\u76ee\u5f55<\/li><\/ul>\n\n\n\n<h5 class=\"has-text-align-center\">\u4fee\u6539\u5177\u4f53\u67d0\u4e2a\u6570\u636e\u5e93\u7f16\u7801<\/h5>\n\n\n\n<p>\u53ef\u4ee5\u67e5\u770b\u6570\u636e\u5e93\u521b\u5efa\u8bed\u53e5\uff0c\u67e5\u8be2\u8be5\u6570\u636e\u5e93\u7f16\u7801<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>show create database \u6570\u636e\u5e93\u540d;\n<\/code><\/pre>\n\n\n\n<p>\u5b9e\u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>mysql&gt; show create database mytest;\n+----------+-----------------------------------------------------------------+\n| Database | Create Database                                                 |\n+----------+-----------------------------------------------------------------+\n| mytest   | CREATE DATABASE `mytest` \/*!40100 DEFAULT CHARACTER SET utf8 *\/ |\n+----------+-----------------------------------------------------------------+\n1 row in set (0.02 sec)\nmysql&gt; show create database www5252;\n+----------+---------------------------------------------------------------------+\n| Database | Create Database                                                     |\n+----------+---------------------------------------------------------------------+\n| www5252  | CREATE DATABASE `www5252` \/*!40100 DEFAULT CHARACTER SET utf8mb4 *\/ |\n+----------+---------------------------------------------------------------------+\n1 row in set (0.01 sec)<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u770b\u5230\u8fd9 2 \u4e2a\u6570\u636e\u5e93\u8bbe\u7f6e\u4e86\u4e0d\u540c\u7684\u7f16\u7801\uff0c\u5206\u522b\u662f utf8 \u4e0e utf8mb4 <\/p>\n\n\n\n<p>\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u4fee\u6539\u67d0\u4e2a\u6570\u636e\u5e93\u7684\u7f16\u7801\u683c\u5f0f\uff08\u5047\u8bbe\u6539\u4e3a utf8)\uff0c<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>alter database &lt;\u6570\u636e\u5e93\u540d&gt; character set utf8;<\/code><\/pre>\n\n\n\n<p>( \u8fd9\u4e2a\u547d\u4ee4\u4f1a \u6c38\u4e45 \u6539\u53d8\u8be5\u6570\u636e\u5e93\u7684\u7f16\u7801\u683c\u5f0f\uff0c\u548c set \u4e0d\u4e00\u6837\uff09<\/p>\n\n\n\n<p>\uff08\u4e0d\u8981\u968f\u610f\u6539\u6765\u6539\u53bb\uff0c\u5426\u5219\u5bb9\u6613\u5bfc\u81f4\u4e71\u7801\uff0c\u5b83\u5e76\u4e0d\u4f1a\u6539\u52a8\u6240\u6709\u7684\u6570\u636e\u5185\u5bb9\uff0c\u53ea\u662f\u6539\u53d8\u4e86\u64cd\u4f5c\u65f6\uff0c\u4ea4\u4e92\u7684\u683c\u5f0f\uff0c\u6bd4\u5982 gbk \u7684\u6570\u636e\u5185\u5bb9\u5f3a\u5236\u6539\u4e3a uft8\u7f16\u7801\uff0c\u8f93\u51fa\u4e71\u7801\uff09<\/p>\n\n\n\n<p>\uff08\u5bf9\u6709\u6570\u636e\u7684\u6570\u636e\u5e93\uff0c\u6539\u53d8\u7f16\u7801\u7684\u6b63\u786e\u65b9\u5f0f\u662f\u9700\u8981\u5728 \u5bfc\u51fa\uff0c\u5bfc\u5165\u64cd\u4f5c\u5b9e\u73b0\uff09<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u67e5\u770b mysql \u76f8\u5173\u7f16\u7801\u8bbe\u7f6e \u67e5\u770b mysql \u76f8\u5173\u7f16\u7801 mysql \u7f16\u7801\u8bbe\u7f6e\u76f8\u5173\u6709 8 \u4e2a\u5c5e\u6027\uff0c\u5982\u4e0b cl&hellip; <a href=\"https:\/\/www.52dixiaowo.com\/db\/post-66.html\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb <span class=\"screen-reader-text\">mysql \u6570\u636e\u7f16\u7801<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts\/66"}],"collection":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/comments?post=66"}],"version-history":[{"count":3,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts\/66\/revisions"}],"predecessor-version":[{"id":71,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/posts\/66\/revisions\/71"}],"wp:attachment":[{"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/media?parent=66"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/categories?post=66"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.52dixiaowo.com\/db\/wp-json\/wp\/v2\/tags?post=66"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}