{"id":886,"date":"2025-03-22T14:13:48","date_gmt":"2025-03-22T06:13:48","guid":{"rendered":"https:\/\/eve2333.top\/?p=886"},"modified":"2025-03-22T14:13:49","modified_gmt":"2025-03-22T06:13:49","slug":"mysql%e6%95%b0%e6%8d%ae%e5%ba%93%e5%85%a5%e9%97%a8%e5%88%b0%e5%a4%a7%e8%9b%87%e5%b0%9a%e7%a1%85%e8%b0%b7%e5%ae%8b%e7%ba%a2%e5%ba%b7%e8%80%81%e5%b8%88%e7%ac%94%e8%ae%b0-%e9%ab%98%e7%ba%a7%e7%af%87-part","status":"publish","type":"post","link":"https:\/\/eve2333.top\/?p=886","title":{"rendered":"MySQL\u6570\u636e\u5e93\u5165\u95e8\u5230\u5927\u86c7\u5c1a\u7845\u8c37\u5b8b\u7ea2\u5eb7\u8001\u5e08\u7b14\u8bb0 \u9ad8\u7ea7\u7bc7 part 1"},"content":{"rendered":"\n

 \u7b2c01\u7ae0_Linux\u4e0bMySQL\u7684\u5b89\u88c5\u4e0e\u4f7f\u7528<\/h1>\n\n\n\n

\u9996\u5148\u5728vmware\u4e2d\u4e0b\u8f7dcentos7\uff0c\u5b9e\u9645\u4e0a8\u66f4\u597d\u4e00\u70b9\uff0c\u4e0d\u8fc7centos\u5df2\u7ecf\u662f\u65f6\u4ee3\u7684\u773c\u6cea\u4e86\uff0c\u6211\u4e4b\u524d\u5df2\u7ecf\u6559\u8fc7\u4e86\uff0c\u4e0d\u8fc7\u662f\u5fd8\u4e86\uff0c\u6240\u4ee5\u91cd\u65b0\u8bf4\u4e00\u904d\uff0c\u770b\u6587\u6863\u5373\u53ef<\/p>\n\n\n\n

2.\u5f00\u673a\u524d\u4fee\u6539mac\u5730\u5740<\/h3>\n\n\n\n

\uff08\u6ce8\u610f\uff1a\u5982\u679c\u662f\u52a8\u6001\u751f\u6210IP\u5730\u5740\uff0c\u8bf7\u5728\u542f\u52a8\u524d\u5148\u542f\u52a8\u88ab\u514b\u9686\u7684\u865a\u62df\u673a\uff0c\u4ee5\u4fdd\u8bc1\u539f\u6765\u865a\u62df\u673a\u7684ip\u4e0d\u4f1a\u53d8\uff0c\u5426\u5219\u539f\u6765\u865a\u62df\u673aip\u4f1a\u53d8\uff0c\u514b\u9686\u540e\u7684\u865a\u62df\u673aip\u662f\u539f\u6765\u7684\u865a\u62df\u673aip\uff09<\/p>\n\n\n\n

\u70b9\u51fb\u7f16\u8f91\u865a\u62df\u673a\u8bbe\u7f6e,\u9009\u62e9\u7f51\u7edc\u9002\u914d\u5668\uff0c\u70b9\u51fb\u53f3\u4e0b\u89d2\u9ad8\u7ea7\u7136\u540e\u4e0b\u8fb9\u5c31\u662fmac\u5730\u5740\uff0c\u8fd9\u4e2amac\u5730\u5740\u548c\u88ab\u514b\u9686\u7684\u662f\u4e00\u6837\u7684\uff0c\u6211\u4eec\u70b9\u51fb\u751f\u6210\uff0c\u91cd\u65b0\u751f\u6210\u4e00\u4e2a\u65b0\u7684\uff1a\u00a0\"\"<\/p>\n\n\n\n

3.\u5f00\u673a\u540e\u4fee\u6539\u4e3b\u673a\u540d\u79f0(<\/strong>\u8fd9\u6b65\u4e0d\u7528\u6539\u4e5f\u53ef\u4ee5<\/strong>)<\/strong><\/h3>\n\n\n\n

\u53f3\u952e\u6253\u5f00linux\u7684\u7ec8\u7aef  \u8f93\u5165\u5982\u4e0b\uff1a             \uff08 \u63d0\u793a\u6ca1\u6709\u6587\u4ef6\u7684\uff0c\u9700\u8981\u5728vim\u540e\u9762\u52a0\u4e2a\u7a7a\u683c<\/p>\n\n\n\n

vim \/etc\/hostname <\/code><\/pre>\n\n\n\n
\u8fd9\u6837\u5c31\u53ef\u4ee5\u4fee\u6539\u4e3b\u673a\u540d\u4e86\uff0c\u63a5\u4e0b\u6765\u5c31\u662fvim\u7684\u57fa\u672c\u64cd\u4f5c\uff0ci\u89e3\u9501\uff0c\u6162\u6162\u8f93\u5165\uff0c:wq\u4fdd\u5b58
\u56de\u5230\u7ec8\u7aefreboot\u3002<\/p>\n\n\n\n
 4.\u4fee\u6539IP\u5730\u5740<\/h3>\n\n\n\n
\u6b64\u5904\u9700\u8981\u6ce8\u610f\u7684\u662f\uff1a\u5982\u679c\u865a\u62df\u673a\u4f7f\u7528\u7684\u662f\u52a8\u6001ip\u5206\u914d\uff0c\u90a3\u4e48\u4e0d\u9700\u8981\u66f4\u6539ip\uff0c\u5982\u679c\u60f3\u6539\u4e3a\u9759\u6001ip\uff0c\u8bf7\u4fee\u6539\uff1a<\/p>\n\n\n\n
vim \/etc\/sysconfig\/network-scripts\/ifcfg-ens33\"\"\u53ef\u4ee5\u770b\u5230\u672c\u673aIP\u662f192.168.169.130\uff0c\u6216\u8005\u53f3\u4e0a\u89d2\u6253\u5f00\u7f51\u7edc\uff0c\u8bbe\u7f6e\uff0c\u5373\u53ef\u770b\u5230ip\uff0cdns\u6240\u6709\u4e1c\u897f\u4e86<\/p>\n\n\n\n
5. \u4fee\u6539UUID<\/h3>\n\n\n\n
\u540c\u6837\u5728\u4fee\u6539IP\u5730\u5740\u7684\u8def\u5f84\u4e2d\u4fee\u6539\u5373\u53ef\uff0c\u7f51\u7edc\u91cd\u542f
systemctl restart network<\/p>\n\n\n\n
\u5b89\u88c5\u6709 Xshell \u548c Xftp \u7b49\u8bbf\u95eeCentOS\u7cfb\u7edf\u7684\u5de5\u5177<\/p>\n\n\n\n
CentOS6\u548cCentOS7\u5728MySQL\u7684\u4f7f\u7528\u4e2d\u7684\u533a\u522b
1. \u9632\u706b\u5899\uff1a6\u662fiptables\uff0c7\u662ffirewalld
2. \u542f\u52a8\u670d\u52a1\u7684\u547d\u4ee4\uff1a6\u662fservice\uff0c7\u662fsystemctl <\/p>\n\n\n\n
 \u73b0\u5728\u6211\u6709\u4e09\u4e2a\u865a\u62df\u673a\uff0c\u662fcentos7\uff0c\u548ccentos7 1\u53f7\uff0c\u4ee5\u53cacentos7 2\u53f7<\/p>\n\n\n\n
centos7 1\u53f7\"\" centos7 2\u53f7\"\"<\/p>\n\n\n\n
2.mysql\u5728linux\u7684\u5b89\u88c5<\/h2>\n\n\n\n
    \n
  • MySQL Community Server \u793e\u533a\u7248\u672c\uff0c\u5f00\u6e90\u514d\u8d39\uff0c\u81ea\u7531\u4e0b\u8f7d\uff0c\u4f46\u4e0d\u63d0\u4f9b\u5b98\u65b9\u6280\u672f\u652f\u6301\uff0c\u9002\u7528\u4e8e \u5927\u591a\u6570\u666e\u901a\u7528\u6237\u3002<\/li>\n\n\n\n
  • MySQL Enterprise Edition \u4f01\u4e1a\u7248\u672c\uff0c\u9700\u4ed8\u8d39\uff0c\u4e0d\u80fd\u5728\u7ebf\u4e0b\u8f7d\uff0c\u53ef\u4ee5\u8bd5\u752830\u5929\u3002\u63d0\u4f9b\u4e86\u66f4\u591a\u7684 \u529f\u80fd\u548c\u66f4\u5b8c\u5907\u7684\u6280\u672f\u652f\u6301\uff0c\u66f4\u9002\u5408\u4e8e\u5bf9\u6570\u636e\u5e93\u7684\u529f\u80fd\u548c\u53ef\u9760\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u4f01\u4e1a\u5ba2\u6237\u3002<\/li>\n\n\n\n
  • MySQL Cluster \u96c6\u7fa4\u7248\uff0c\u5f00\u6e90\u514d\u8d39\u3002\u7528\u4e8e\u67b6\u8bbe\u96c6\u7fa4\u670d\u52a1\u5668\uff0c\u53ef\u5c06\u51e0\u4e2aMySQL Server\u5c01\u88c5\u6210\u4e00\u4e2a Server\u3002\u9700\u8981\u5728\u793e\u533a\u7248\u6216\u4f01\u4e1a\u7248\u7684\u57fa\u7840\u4e0a\u4f7f\u7528\u3002<\/li>\n\n\n\n
  • MySQL Cluster CGE \u9ad8\u7ea7\u96c6\u7fa4\u7248\uff0c\u9700\u4ed8\u8d39\u3002<\/li>\n<\/ul>\n\n\n\n
     \u73b0\u5728\u6700\u65b0\u7248\u4ee5\u53ca\u662f9.2.0\u7248\u672c\uff0c\u6700\u65b0\u7684LTS\u662f8.4.4\u7248\u672c\uff0c\u9009\u62e98.0.27\u7248\u672c\uff0c\u5bf9\u5e94\u7684\u64cd\u4f5c\u7cfb\u7edf\u5c31\u662fRED HAT\u5373\u53ef\uff0c\u76f8\u5e94\u7684linux7\uff0cx86-64bit         \u4e0b\u8f7d\u7b2c\u4e00\u4e2arpm bundle\u89e3\u538b\u5373\u53ef<\/p>\n\n\n\n
    \u5728\/opt \u4e2d\u9009\u62e9client\uff0cclient-plugins\uff0ccommon\uff0clibs\u548cserver5\u4e2a\u5373\u53ef\uff0c\u6709\u4eba\u8bf4\u76f4\u63a5\u7528docker \u62c9\u53d6\u66f4\u65b9\u4fbf\uff0c\u4f46\u662f\u61d2\u5f97\u5b66\uff0c\u4ee5\u540e\u518d\u5199\u5427\"\"<\/p>\n\n\n\n
    \u5728shell\u4e2d\u8fd0\u884ccd \/opt\u7136\u540e ll\u53ef\u4ee5\u5217\u4e3e\u51fa\u4e94\u4e2a\u6587\u4ef6\u5373\u53ef\uff0c<\/p>\n\n\n\n
    1. \u68c0\u67e5\/tmp\u4e34\u65f6\u76ee\u5f55\u6743\u9650\uff08\u5fc5\u4e0d\u53ef\u5c11\uff09 \u7531\u4e8emysql\u5b89\u88c5\u8fc7\u7a0b\u4e2d\uff0c\u4f1a\u901a\u8fc7mysql\u7528\u6237\u5728\/tmp\u76ee\u5f55\u4e0b\u65b0\u5efatmp_db\u6587\u4ef6\uff0c\u6240\u4ee5\u8bf7\u7ed9\/tmp\u8f83\u5927\u7684\u6743\u9650\u3002\u6267\u884c \uff1a chmod -R 777 \/tmp<\/p>\n\n\n\n
    2. \u5b89\u88c5\u524d\uff0c\u68c0\u67e5\u4f9d\u8d56 rpm -qa|grep libaio \u5982\u679c\u5b58\u5728libaio\u5305\u5982\u4e0b\uff1a
    rpm -qa|grep net-tools \u5982\u679c\u5b58\u5728net-tools\u5305\u5982\u4e0b\uff1a
    rpm -qa|grep net-tools \u5982\u679c\u4e0d\u5b58\u5728\u9700\u8981\u5230centos\u5b89\u88c5\u76d8\u91cc\u8fdb\u884crpm\u5b89\u88c5\u3002
    \u5b89\u88c5linux\u5982\u679c\u5e26\u56fe\u5f62\u5316\u754c\u9762\uff0c\u8fd9\u4e9b\u90fd\u662f\u5b89\u88c5\u597d \u7684\"\"<\/p>\n\n\n\n
    1. \u5c06\u5b89\u88c5\u7a0b\u5e8f\u62f7\u8d1d\u5230\/opt\u76ee\u5f55\u4e0b<\/p>\n\n\n\n
    \u5728mysql\u7684\u5b89\u88c5\u6587\u4ef6\u76ee\u5f55\u4e0b\u6267\u884c\uff1a\uff08\u5fc5\u987b\u6309\u7167\u987a\u5e8f\u6267\u884c\uff09<\/p>\n\n\n\n
      \n
    1. rpm -ivh mysql-community-common-8.0.25-1.el7.x86_64.rpm<\/li>\n\n\n\n
    2. rpm -ivh mysql-community-client-plugins-8.0.25-1.el7.x86_64.rpm<\/li>\n\n\n\n
    3. rpm -ivh mysql-community-libs-8.0.25-1.el7.x86_64.rpm<\/li>\n\n\n\n
    4. rpm -ivh mysql-community-client-8.0.25-1.el7.x86_64.rpm<\/li>\n\n\n\n
    5. rpm -ivh mysql-community-server-8.0.25-1.el7.x86_64.rpm\u00a0<\/li>\n<\/ol>\n\n\n\n
      \"\"<\/p>\n\n\n\n
      3. \u67e5\u770bMySQL\u7248\u672c<\/h3>\n\n\n\n
      mysql --version     \u6216    mysqladmin --version <\/p>\n\n\n\n
       \u6216\u8005rpm -qa|grep -i mysql           \u5448\u73b0mysql\u7684\u5de5\u5177<\/p>\n\n\n\n
      4. \u670d\u52a1\u7684\u521d\u59cb\u5316<\/h3>\n\n\n\n
      \u4e3a\u4e86\u4fdd\u8bc1\u6570\u636e\u5e93\u76ee\u5f55\u4e0e\u6587\u4ef6\u7684\u6240\u6709\u8005\u4e3a mysql \u767b\u5f55\u7528\u6237\uff0c\u5982\u679c\u4f60\u662f\u4ee5 root \u8eab\u4efd\u8fd0\u884c mysql \u670d\u52a1\uff0c\u9700\u8981\u6267 \u884c\u4e0b\u9762\u7684\u547d\u4ee4\u521d\u59cb\u5316\uff1a mysqld --initialize --user=mysql<\/p>\n\n\n\n
      \u8bf4\u660e\uff1a --initialize \u9009\u9879\u9ed8\u8ba4\u4ee5\u201c\u5b89\u5168\u201d\u6a21\u5f0f\u6765\u521d\u59cb\u5316\uff0c\u5219\u4f1a\u4e3a root \u7528\u6237\u751f\u6210\u4e00\u4e2a\u5bc6\u7801\u5e76\u5c06\u8be5\u5bc6\u7801\u6807\u8bb0\u4e3a\u8fc7 \u671f\uff0c\u767b\u5f55\u540e\u4f60\u9700\u8981\u8bbe\u7f6e\u4e00\u4e2a\u65b0\u7684\u5bc6\u7801\u3002\u751f\u6210\u7684 \u4e34\u65f6\u5bc6\u7801\u4f1a\u5f80\u65e5\u5fd7\u4e2d\u8bb0\u5f55\u4e00\u4efd\u3002 \u67e5\u770b\u5bc6\u7801\uff1a cat \/var\/log\/mysqld.log\"\"<\/p>\n\n\n\n
       systemctl status mysqld\u68c0\u6d4bmysql\u662f\u5426\u6253\u5f00\uff0c<\/p>\n\n\n\n
      \n
      \u542f\u52a8\uff1asystemctl start mysqld.service<\/p>\n\n\n\n
      \u5173\u95ed\uff1asystemctl stop mysqld.service<\/p>\n\n\n\n
      \u91cd\u542f\uff1asystemctl restart mysqld.service<\/p>\n\n\n\n
      \u67e5\u770b\u72b6\u6001\uff1asystemctl status mysqld.service<\/p>\n<\/blockquote>\n\n\n\n
      6. \u67e5\u770bMySQL\u670d\u52a1\u662f\u5426\u81ea\u542f\u52a8<\/h3>\n\n\n\n
      systemctl list-unit-files|grep mysqld.service \u9ed8\u8ba4\u662fenabled\u3002<\/p>\n\n\n\n
      \u5982\u4e0d\u662fenabled\u53ef\u4ee5\u8fd0\u884c\u5982\u4e0b\u547d\u4ee4\u8bbe\u7f6e\u81ea\u542f\u52a8 systemctl enable mysqld.service
      \u5982\u679c\u5e0c\u671b\u4e0d\u8fdb\u884c\u81ea\u542f\u52a8\uff0c\u8fd0\u884c\u5982\u4e0b\u547d\u4ee4\u8bbe\u7f6e systemctl disable mysqld.service<\/p>\n\n\n\n
      3. MySQL\u767b\u5f55<\/h2>\n\n\n\n
      \u901a\u8fc7 mysql -hlocalhost -P3306 -uroot -p \u8fdb\u884c\u767b\u5f55\uff0c\u5728Enter password\uff1a\u5f55\u5165\u521d\u59cb\u5316\u5bc6\u7801\uff1a\u6211\u7684\u662fxuO-*layz92W<\/strong><\/p>\n\n\n\n
      \u56e0\u4e3a\u521d\u59cb\u5316\u5bc6\u7801\u9ed8\u8ba4\u662f\u8fc7\u671f\u7684\uff0c\u6240\u4ee5\u67e5\u770b\u6570\u636e\u5e93\u4f1a\u62a5\u9519 \u4fee\u6539\u5bc6\u7801\uff1a
      ALTER USER 'root'@'localhost' IDENTIFIED BY 'new_password';
      5.7\u7248\u672c\u4e4b\u540e\uff08\u4e0d\u542b5.7\uff09\uff0cmysql\u52a0\u5165\u4e86\u5168\u65b0\u7684\u5bc6\u7801\u5b89\u5168\u673a\u5236\u3002\u8bbe\u7f6e\u65b0\u5bc6\u7801\u592a\u7b80\u5355\u4f1a\u62a5\u9519<\/p>\n\n\n\n
       \u6211\u4fee\u6539\u5bc6\u7801\u4e3aabc123<\/strong><\/p>\n\n\n\n
       \u63a5\u4e0b\u6765\u7ee7\u7eed\u5b8c\u6210\u5176\u4ed6\u4e24\u53f0\u7684mysql\u5b89\u88c5\u5373\u53ef\uff0c\u539f\u6a21\u539f\u6837\u5373\u53ef\uff0c.<\/p>\n\n\n\n
      3.3 \u8bbe\u7f6e\u8fdc\u7a0b\u767b\u5f55<\/h3>\n\n\n\n
      \u5728\u7528SQLyog\u6216Navicat\u4e2d\u914d\u7f6e\u8fdc\u7a0b\u8fde\u63a5Mysql\u6570\u636e\u5e93\u65f6\u9047\u5230\u5982\u4e0b1130\u4ee3\u53f7\u62a5\u9519\u4fe1\u606f\uff0c\u8fd9\u662f\u7531\u4e8eMysql\u914d\u7f6e\u4e86\u4e0d\u652f\u6301\u8fdc \u7a0b\u8fde\u63a5\u5f15\u8d77\u7684<\/p>\n\n\n\n
      1.\u5728\u8fdc\u7a0b\u673a\u5668\u4e0a\u4f7f\u7528ping ip\u5730\u5740 \u4fdd\u8bc1\u7f51\u7edc\u7545\u901a<\/p>\n\n\n\n
      2.\u5728\u8fdc\u7a0b\u673a\u5668\u4e0a\u4f7f\u7528telnet\u547d\u4ee4 \u4fdd\u8bc1\u7aef\u53e3\u53f7\u5f00\u653e\u8bbf\u95ee\uff08\u5728\u63a7\u5236\u9762\u677f\u4e2d\u6253\u5f00\u201ctalent\u5ba2\u6237\u7aef\u201d\uff09
      telnet ip\u5730\u5740 \u7aef\u53e3\u53f7<\/p>\n\n\n\n
      \u5173\u4e0bwindows\u548ccentos\u7684\u9632\u706b\u5899\uff0c\u5b9e\u9645\u4e0a\u53ef\u4ee5\u9009\u62e9\u5f00\u653e\u7aef\u53e3<\/p>\n\n\n\n
      \"\"\"\"<\/p>\n\n\n\n
      \u00a0\"\"<\/p>\n\n\n\n
      \u4e0b\u9762\u8fd9\u4e2a\u5728navicat\u4e2d\u4e0d\u4e00\u5b9a\u4f1a\u51fa\u73b0\uff0c\u8bb0\u5f97\u4fee\u6539\u5373\u53ef <\/p>\n\n\n\n
      \"\"<\/p>\n\n\n\n
       4. MySQL8\u7684\u5bc6\u7801\u5f3a\u5ea6\u8bc4\u4f30\uff08\u4e86\u89e3\uff09<\/h2>\n\n\n\n
      \u56e0\u4e3a\u662f\u4e86\u89e3\uff0c\u6240\u4ee5\u4e0d\u5728\u9610\u8ff0<\/p>\n\n\n\n
      5. \u5b57\u7b26\u96c6\u7684\u76f8\u5173\u64cd\u4f5c<\/h2>\n\n\n\n
      5.1 \u4fee\u6539MySQL5.7\u5b57\u7b26\u96c6<\/h3>\n\n\n\n
      1. \u4fee\u6539\u6b65\u9aa4<\/p>\n\n\n\n
      \u5728MySQL 8.0\u7248\u672c\u4e4b\u524d\uff0c\u9ed8\u8ba4\u5b57\u7b26\u96c6\u4e3a latin1 \uff0cutf8\u5b57\u7b26\u96c6\u6307\u5411\u7684\u662f utf8mb3 \u3002\u7f51\u7ad9\u5f00\u53d1\u4eba\u5458\u5728\u6570\u636e\u5e93 \u8bbe\u8ba1\u7684\u65f6\u5019\u5f80\u5f80\u4f1a\u5c06\u7f16\u7801\u4fee\u6539\u4e3autf8\u5b57\u7b26\u96c6\u3002\u5982\u679c\u9057\u5fd8\u4fee\u6539\u9ed8\u8ba4\u7684\u7f16\u7801\uff0c\u5c31\u4f1a\u51fa\u73b0\u4e71\u7801\u7684\u95ee\u9898\u3002\u4eceMySQL 8.0\u5f00\u59cb\uff0c\u6570\u636e\u5e93\u7684\u9ed8\u8ba4\u7f16\u7801\u5c06\u6539\u4e3a utf8mb4 \uff0c\u4ece\u800c\u907f\u514d\u4e0a\u8ff0\u4e71\u7801\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n
       \u64cd\u4f5c1\uff1a\u67e5\u770b\u9ed8\u8ba4\u4f7f\u7528\u7684\u5b57\u7b26\u96c6<\/strong><\/p>\n\n\n\n
      show variables like 'character%'; \n# \u6216\u8005\nshow variables like '%char%';<\/code><\/pre>\n\n\n\n
      MySQL 5.7 \u9ed8\u8ba4\u7684\u5ba2\u6237\u7aef\u548c\u670d\u52a1\u5668\u90fd\u7528\u4e86 latin1 \uff0c\u4e0d\u652f\u6301\u4e2d\u6587\uff0c\u4fdd\u5b58\u4e2d\u6587\u4f1a\u62a5\u9519\u3002<\/p>\n\n\n\n
      \u64cd\u4f5c2\uff1a\u4fee\u6539\u5b57\u7b26\u96c6<\/strong><\/p>\n\n\n\n
      vim \/etc\/my.cnf<\/code><\/pre>\n\n\n\n
      \u5728MySQL5.7\u6216\u4e4b\u524d\u7684\u7248\u672c\u4e2d\uff0c\u5728\u6587\u4ef6\u6700\u540e\u52a0\u4e0a\u4e2d\u6587\u5b57\u7b26\u96c6\u914d\u7f6e\uff1a character_set_server=utf8<\/p>\n\n\n\n
      \u64cd\u4f5c3\uff1a\u91cd\u65b0\u542f\u52a8MySQL\u670d\u52a1<\/strong><\/p>\n\n\n\n
      systemctl restart mysqld<\/code><\/pre>\n\n\n\n
      \u4f46\u662f\u539f\u5e93\u3001\u539f\u8868\u7684\u8bbe\u5b9a\u4e0d\u4f1a\u53d1\u751f\u53d8\u5316\uff0c\u53c2\u6570\u4fee\u6539\u53ea\u5bf9\u65b0\u5efa\u7684\u6570\u636e\u5e93\u751f\u6548\u3002 <\/p>\n\n\n\n
      2. \u5df2\u6709\u5e93&\u8868\u5b57\u7b26\u96c6\u7684\u53d8\u66f4 <\/h4>\n\n\n\n
      MySQL5.7\u7248\u672c\u4e2d\uff0c\u4ee5\u524d\u521b\u5efa\u7684\u5e93\uff0c\u521b\u5efa\u7684\u8868\u5b57\u7b26\u96c6\u8fd8\u662flatin1\u3002<\/p>\n\n\n\n
      \u4fee\u6539\u5df2\u521b\u5efa\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6 alter database dbtest1 character set 'utf8';
      \u4fee\u6539\u5df2\u521b\u5efa\u6570\u636e\u8868\u7684\u5b57\u7b26\u96c6 alter table t_emp convert to character set 'utf8';<\/p>\n\n\n\n
      \u6ce8\u610f\uff1a\u4f46\u662f\u539f\u6709\u7684\u6570\u636e\u5982\u679c\u662f\u7528\u975e'utf8'\u7f16\u7801\u7684\u8bdd\uff0c\u6570\u636e\u672c\u8eab\u7f16\u7801\u4e0d\u4f1a\u53d1\u751f\u6539\u53d8\u3002\u5df2\u6709\u6570\u636e\u9700\u8981\u5bfc \u51fa\u6216\u5220\u9664\uff0c\u7136\u540e\u91cd\u65b0\u63d2\u5165\u3002<\/p>\n\n\n\n
      \n\n\n\n
       5.2 \u5404\u7ea7\u522b\u7684\u5b57\u7b26\u96c6<\/h3>\n\n\n\n
      MySQL\u67094\u4e2a\u7ea7\u522b\u7684\u5b57\u7b26\u96c6\u548c\u6bd4\u8f83\u89c4\u5219\uff0c\u5206\u522b\u662f\uff1a \u670d\u52a1\u5668\u7ea7\u522b \u6570\u636e\u5e93\u7ea7\u522b \u8868\u7ea7\u522b \u5217\u7ea7\u522b\"\"<\/p>\n\n\n\n
      character_set_server\uff1a\u670d\u52a1\u5668\u7ea7\u522b\u7684\u5b57\u7b26\u96c6<\/strong>
      character_set_database\uff1a\u5f53\u524d\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6 character_set_client\uff1a\u670d\u52a1\u5668\u89e3\u7801\u8bf7\u6c42\u65f6\u4f7f\u7528\u7684\u5b57\u7b26\u96c6<\/strong>
      character_set_connection\uff1a\u670d\u52a1\u5668\u5904\u7406\u8bf7\u6c42\u65f6\u4f1a\u628a\u8bf7\u6c42\u5b57\u7b26\u4e32\u4ececharacter_set_client\u8f6c\u4e3a character_set_connection
      character_set_results\uff1a\u670d\u52a1\u5668\u5411\u5ba2\u6237\u7aef\u8fd4\u56de\u6570\u636e\u65f6\u4f7f\u7528\u7684\u5b57\u7b26\u96c6 <\/p>\n\n\n\n
      \"\"\"\"<\/p>\n\n\n\n
      5.3 \u5b57\u7b26\u96c6\u4e0e\u6bd4\u8f83\u89c4\u5219(\u4e86\u89e3)<\/h3>\n\n\n\n
      utf8 \u5b57\u7b26\u96c6\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\u9700\u8981\u4f7f\u75281\uff5e4\u4e2a\u5b57\u8282\uff0c\u4f46\u662f\u6211\u4eec\u5e38\u7528\u7684\u4e00\u4e9b\u5b57\u7b26\u4f7f\u75281\uff5e3\u4e2a\u5b57\u8282\u5c31\u53ef\u4ee5\u8868\u793a \u4e86\u3002\u800c\u5b57\u7b26\u96c6\u8868\u793a\u4e00\u4e2a\u5b57\u7b26\u6240\u7528\u7684\u6700\u5927\u5b57\u8282\u957f\u5ea6\uff0c\u5728\u67d0\u4e9b\u65b9\u9762\u4f1a\u5f71\u54cd\u7cfb\u7edf\u7684\u5b58\u50a8\u548c\u6027\u80fd\uff0c\u6240\u4ee5\u8bbe\u8ba1 MySQL\u7684\u8bbe\u8ba1\u8005\u5077\u5077\u7684\u5b9a\u4e49\u4e86\u4e24\u4e2a\u6982\u5ff5\uff1a
      utf8mb3 \uff1a\u9609\u5272\u8fc7\u7684 utf8 \u5b57\u7b26\u96c6\uff0c\u53ea\u4f7f\u75281\uff5e3\u4e2a\u5b57\u8282\u8868\u793a\u5b57\u7b26\u3002
      utf8mb4 \uff1a\u6b63\u5b97\u7684 utf8 \u5b57\u7b26\u96c6\uff0c\u4f7f\u75281\uff5e4\u4e2a\u5b57\u8282\u8868\u793a\u5b57\u7b26\u3002<\/p>\n\n\n\n
      \u4e0a\u8868\u4e2d\uff0cMySQL\u7248\u672c\u4e00\u5171\u652f\u630141\u79cd\u5b57\u7b26\u96c6\uff0c<\/p>\n\n\n\n
      #\u67e5\u770bGBK\u5b57\u7b26\u96c6\u7684\u6bd4\u8f83\u89c4\u5219\nSHOW COLLATION LIKE 'gbk%';\n #\u67e5\u770bUTF-8\u5b57\u7b26\u96c6\u7684\u6bd4\u8f83\u89c4\u5219\nSHOW COLLATION LIKE 'utf8%';<\/code><\/pre>\n\n\n\n
      # \u67e5\u770b\u670d\u52a1\u5668\u7684\u5b57\u7b26\u96c6\u548c\u6bd4\u8f83\u89c4\u5219\nSHOW VARIABLES LIKE '%_server';\n\n# \u67e5\u770b\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6\u548c\u6bd4\u8f83\u89c4\u5219\nSHOW VARIABLES LIKE '%_database';\n\n# \u67e5\u770b\u5177\u4f53\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6\nSHOW CREATE DATABASE dbtest1;\n\n# \u4fee\u6539\u5177\u4f53\u6570\u636e\u5e93\u7684\u5b57\u7b26\u96c6\nALTER DATABASE dbtest1 DEFAULT CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';<\/code><\/pre>\n\n\n\n
      USE dbtest1;\n\n# \u67e5\u770b\u8868\u7684\u5b57\u7b26\u96c6\nSHOW CREATE TABLE empl;\n\n# \u67e5\u770b\u8868\u7684\u6bd4\u8f83\u89c4\u5219\nSHOW TABLE STATUS FROM dbtest1 LIKE '%empl';\n\n# \u4fee\u6539\u8868\u7684\u5b57\u7b26\u96c6\u548c\u6bd4\u8f83\u89c4\u5219\nALTER TABLE empl DEFAULT CHARACTER SET 'utf8' COLLATE 'utf8_general_ci';<\/code><\/pre>\n\n\n\n
      5.4 \u8bf7\u6c42\u5230\u54cd\u5e94\u8fc7\u7a0b\u4e2d\u5b57\u7b26\u96c6\u7684\u53d8\u5316<\/h3>\n\n\n\n
      \u4e3a\u4e86\u4f53\u73b0\u51fa\u5b57\u7b26\u96c6\u5728\u8bf7\u6c42\u5904\u7406\u8fc7\u7a0b\u4e2d\u7684\u53d8\u5316\uff0c\u6211\u4eec\u8fd9\u91cc\u7279\u610f\u4fee\u6539\u4e00\u4e2a\u7cfb\u7edf\u53d8\u91cf\u7684\u503c\uff1a
      mysql> set character_set_connection = gbk;
      Query OK, 0 rows affected (0.00 sec)<\/p>\n\n\n\n
      \u73b0\u5728\u5047\u8bbe\u6211\u4eec\u5ba2\u6237\u7aef\u53d1\u9001\u7684\u8bf7\u6c42\u662f\u4e0b\u8fb9\u8fd9\u4e2a\u5b57\u7b26\u4e32\uff1a
      SELECT * FROM t WHERE s = '\u6211';<\/p>\n\n\n\n
      \u4e3a\u4e86\u65b9\u4fbf\u5927\u5bb6\u7406\u89e3\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6211\u4eec\u53ea\u5206\u6790\u5b57\u7b26\u201c\u6211\u201d\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u5b57\u7b26\u96c6\u7684\u8f6c\u6362\u3002
      \u73b0\u5728\u770b\u4e00\u4e0b\u5728\u8bf7\u6c42\u4ece\u53d1\u9001\u5230\u7ed3\u679c\u8fd4\u56de\u8fc7\u7a0b\u4e2d\u5b57\u7b26\u96c6\u7684\u53d8\u5316\uff1a
      1. \u5ba2\u6237\u7aef\u53d1\u9001\u8bf7\u6c42\u6240\u4f7f\u7528\u7684\u5b57\u7b26\u96c6
      \u4e00\u822c\u60c5\u51b5\u4e0b\u5ba2\u6237\u7aef\u6240\u4f7f\u7528\u7684\u5b57\u7b26\u96c6\u548c\u5f53\u524d\u64cd\u4f5c\u7cfb\u7edf\u4e00\u81f4\uff0c\u4e0d\u540c\u64cd\u4f5c\u7cfb\u7edf\u4f7f\u7528\u7684\u5b57\u7b26\u96c6\u53ef\u80fd\u4e0d\u4e00\u6837\uff0c\u5982\u4e0b\uff1a
         - \u7c7b Unix \u7cfb\u7edf\u4f7f\u7528\u7684\u662f utf8
         - Windows \u4f7f\u7528\u7684\u662f gbk
      \u5f53\u5ba2\u6237\u7aef\u4f7f\u7528\u7684\u662f utf8 \u5b57\u7b26\u96c6\uff0c\u5b57\u7b26\u201c\u6211\u201d\u5728\u53d1\u9001\u7ed9\u670d\u52a1\u5668\u7684\u8bf7\u6c42\u4e2d\u7684\u5b57\u8282\u5f62\u5f0f\u5c31\u662f\uff1a
         0xE68891<\/p>\n\n\n\n
      \u63d0\u793a
      \u5982\u679c\u4f60\u4f7f\u7528\u7684\u662f\u53ef\u89c6\u5316\u5de5\u5177\uff0c\u6bd4\u5982navicat\u4e4b\u7c7b\u7684\uff0c\u8fd9\u4e9b\u5de5\u5177\u53ef\u80fd\u4f1a\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684\u5b57\u7b26\u96c6\u6765\u7f16\u7801\u53d1\u9001\u5230\u670d\u52a1\u5668\u7684\u5b57\u7b26\u4e32\uff0c\u800c\u4e0d\u91c7\u7528\u64cd\u4f5c\u7cfb\u7edf\u9ed8\u8ba4\u7684\u5b57\u7b26\u96c6\uff08\u6240\u4ee5\u5728\u5b66\u4e60\u7684\u65f6\u5019\u8fd8\u662f\u5c3d\u91cf\u7528\u547d\u4ee4\u884c\u7a97\u53e3\uff09\u3002<\/p>\n\n\n\n
      2. \u670d\u52a1\u5668\u63a5\u6536\u5230\u5ba2\u6237\u7aef\u53d1\u9001\u6765\u7684\u8bf7\u6c42\u5176\u5b9e\u662f\u4e00\u4e32\u4e8c\u8fdb\u5236\u7684\u5b57\u8282\uff0c\u5b83\u4f1a\u8ba4\u4e3a\u8fd9\u4e32\u5b57\u8282\u91c7\u7528\u7684\u5b57\u7b26\u96c6\u662f character_set_client\uff0c\u7136\u540e\u628a\u8fd9\u4e32\u5b57\u8282\u8f6c\u6362\u4e3a character_set_connection \u5b57\u7b26\u96c6\u7f16\u7801\u7684\u5b57\u7b26\u3002
      \u7531\u4e8e\u6211\u7684\u8ba1\u7b97\u673a\u4e0a character_set_client \u7684\u503c\u662f utf8\uff0c\u9996\u5148\u4f1a\u6309\u7167 utf8 \u5b57\u7b26\u96c6\u5bf9\u5b57\u8282\u4e32 0xE68891 \u8fdb\u884c\u89e3\u7801\uff0c\u5f97\u5230\u7684\u5b57\u7b26\u4e32\u5c31\u662f\u201c\u6211\u201d\uff0c\u7136\u540e\u6309\u7167 character_set_connection \u4ee3\u8868\u7684\u5b57\u7b26\u96c6\uff0c\u4e5f\u5c31\u662f gbk \u8fdb\u884c\u7f16\u7801\uff0c\u5f97\u5230\u7684\u7ed3\u679c\u5c31\u662f\u5b57\u8282\u4e32 0xCED2\u3002<\/p>\n\n\n\n
      3. \u56e0\u4e3a\u8868 t \u7684\u5217 col \u91c7\u7528\u7684\u662f gbk \u5b57\u7b26\u96c6\uff0c\u4e0e character_set_connection \u4e00\u81f4\uff0c\u6240\u4ee5\u76f4\u63a5\u5230\u5217\u4e2d\u627e\u5b57\u8282\u503c\u4e3a 0xCED2 \u7684\u8bb0\u5f55\uff0c\u6700\u540e\u627e\u5230\u4e86\u4e00\u6761\u8bb0\u5f55\u3002<\/p>\n\n\n\n
      \u63d0\u793a
      \u5982\u679c\u67d0\u4e2a\u5217\u4f7f\u7528\u7684\u5b57\u7b26\u96c6\u548c character_set_connection \u4ee3\u8868\u7684\u5b57\u7b26\u96c6\u4e0d\u4e00\u81f4\u7684\u8bdd\uff0c\u8fd8\u9700\u8981\u8fdb\u884c\u4e00\u6b21\u5b57\u7b26\u96c6\u8f6c\u6362\u3002<\/p>\n\n\n\n
      4. \u4e0a\u4e00\u6b65\u9aa4\u627e\u5230\u7684\u8bb0\u5f55\u4e2d\u7684 col \u5217\u5176\u5b9e\u662f\u4e00\u4e2a\u5b57\u8282\u4e32 0xCED2\uff0ccol \u5217\u662f\u91c7\u7528 gbk \u8fdb\u884c\u7f16\u7801\u7684\uff0c\u6240\u4ee5\u9996\u5148\u4f1a\u5c06\u8fd9\u4e2a\u5b57\u8282\u4e32\u7528 gbk \u8fdb\u884c\u89e3\u7801\uff0c\u5f97\u5230\u5b57\u7b26\u4e32\u201c\u6211\u201d\uff0c\u7136\u540e\u518d\u628a\u8fd9\u4e2a\u5b57\u7b26\u4e32\u4f7f\u7528 character_set_results \u4ee3\u8868\u7684\u5b57\u7b26\u96c6\uff0c\u4e5f\u5c31\u662f utf8 \u8fdb\u884c\u7f16\u7801\uff0c\u5f97\u5230\u4e86\u65b0\u7684\u5b57\u8282\u4e32\uff1a0xE68891\uff0c\u7136\u540e\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002<\/p>\n\n\n\n
      5. \u7531\u4e8e\u5ba2\u6237\u7aef\u662f\u7528\u7684\u5b57\u7b26\u96c6\u662f utf8\uff0c\u6240\u4ee5\u53ef\u4ee5\u987a\u5229\u7684\u5c06 0xE68891 \u89e3\u91ca\u6210\u5b57\u7b26\u201c\u6211\u201d\uff0c\u4ece\u800c\u663e\u793a\u5230\u6211\u4eec\u7684\u663e\u793a\u5668\u4e0a\uff0c\u6240\u4ee5\u6211\u4eec\u4eba\u7c7b\u4e5f\u8bfb\u61c2\u4e86\u8fd4\u56de\u7684\u7ed3\u679c\u3002<\/p>\n\n\n\n
      \"\"<\/p>\n\n\n\n
      6. SQL\u5927\u5c0f\u5199\u89c4\u8303 <\/h2>\n\n\n\n
      \u5728 SQL \u4e2d\uff0c\u5173\u952e\u5b57\u548c\u51fd\u6570\u540d\u662f\u4e0d\u7528\u533a\u5206\u5b57\u6bcd\u5927\u5c0f\u5199\u7684\uff0c\u6bd4\u5982 SELECT\u3001WHERE\u3001ORDER\u3001GROUP BY \u7b49\u5173 \u952e\u5b57\uff0c\u4ee5\u53ca ABS\u3001MOD\u3001ROUND\u3001MAX \u7b49\u51fd\u6570\u540d\u3002<\/p>\n\n\n\n
      \u4e0d\u8fc7\u5728 SQL \u4e2d\uff0c\u4f60\u8fd8\u662f\u8981\u786e\u5b9a\u5927\u5c0f\u5199\u7684\u89c4\u8303\uff0c\u56e0\u4e3a\u5728 Linux \u548c Windows \u73af\u5883\u4e0b\uff0c\u4f60\u53ef\u80fd\u4f1a\u9047\u5230\u4e0d\u540c\u7684\u5927 \u5c0f\u5199\u95ee\u9898\u3002 windows\u7cfb\u7edf\u9ed8\u8ba4\u5927\u5c0f\u5199\u4e0d\u654f\u611f\uff0c\u4f46\u662f linux\u7cfb\u7edf\u662f\u5927\u5c0f\u5199\u654f\u611f\u7684\u3002<\/p>\n\n\n\n
      \u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u67e5\u770b\uff1a SHOW VARIABLES LIKE '%lower_case_table_names%' <\/strong><\/p>\n\n\n\n
      lower_case_table_names\u53c2\u6570\u503c\u7684\u8bbe\u7f6e\uff1a \u9ed8\u8ba4\u4e3a0\uff0c\u5927\u5c0f\u5199\u654f\u611f\u3002
      \u8bbe\u7f6e1\uff0c\u5927\u5c0f\u5199\u4e0d\u654f\u611f\u3002\u521b\u5efa\u7684\u8868\uff0c\u6570\u636e\u5e93\u90fd\u662f\u4ee5\u5c0f\u5199\u5f62\u5f0f\u5b58\u653e\u5728\u78c1\u76d8\u4e0a\uff0c\u5bf9\u4e8esql\u8bed\u53e5\u90fd\u662f\u8f6c \u6362\u4e3a\u5c0f\u5199\u5bf9\u8868\u548c\u6570\u636e\u5e93\u8fdb\u884c\u67e5\u627e\u3002
      \u8bbe\u7f6e2\uff0c\u521b\u5efa\u7684\u8868\u548c\u6570\u636e\u5e93\u4f9d\u636e\u8bed\u53e5\u4e0a\u683c\u5f0f\u5b58\u653e\uff0c\u51e1\u662f\u67e5\u627e\u90fd\u662f\u8f6c\u6362\u4e3a\u5c0f\u5199\u8fdb\u884c\u3002 <\/p>\n\n\n\n
      \n
      MySQL\u5728Linux\u4e0b\u6570\u636e\u5e93\u540d\u3001\u8868\u540d\u3001\u5217\u540d\u3001\u522b\u540d\u5927\u5c0f\u5199\u89c4\u5219\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
      1\u3001\u6570\u636e\u5e93\u540d\u3001\u8868\u540d\u3001\u8868\u7684\u522b\u540d\u3001\u53d8\u91cf\u540d\u662f\u4e25\u683c\u533a\u5206\u5927\u5c0f\u5199\u7684\uff1b<\/p>\n\n\n\n
      2\u3001\u5173\u952e\u5b57\u3001\u51fd\u6570\u540d\u79f0\u5728 SQL \u4e2d\u4e0d\u533a\u5206\u5927\u5c0f\u5199\uff1b<\/p>\n\n\n\n
      3\u3001\u5217\u540d\uff08\u6216\u5b57\u6bb5\u540d\uff09\u4e0e\u5217\u7684\u522b\u540d\uff08\u6216\u5b57\u6bb5\u522b\u540d\uff09\u5728\u6240\u6709\u7684\u60c5\u51b5\u4e0b\u5747\u662f\u5ffd\u7565\u5927\u5c0f\u5199\u7684\uff1b MySQL\u5728Windows\u7684\u73af\u5883\u4e0b\u5168\u90e8\u4e0d\u533a\u5206\u5927\u5c0f\u5199<\/strong><\/p>\n<\/blockquote>\n\n\n\n
      6.2 Linux\u4e0b\u5927\u5c0f\u5199\u89c4\u5219\u8bbe\u7f6e<\/h3>\n\n\n\n
      \u5f53\u60f3\u8bbe\u7f6e\u4e3a\u5927\u5c0f\u5199\u4e0d\u654f\u611f\u65f6\uff0c\u8981\u5728 my.cnf \u8fd9\u4e2a\u914d\u7f6e\u6587\u4ef6 [mysqld] \u4e2d\u52a0\u5165 lower_case_table_names=1 \uff0c\u7136\u540e\u91cd\u542f\u670d\u52a1\u5668\u3002 <\/p>\n\n\n\n
        \n
      • \u4f46\u662f\u8981\u5728\u91cd\u542f\u6570\u636e\u5e93\u5b9e\u4f8b\u4e4b\u524d\u5c31\u9700\u8981\u5c06\u539f\u6765\u7684\u6570\u636e\u5e93\u548c\u8868\u8f6c\u6362\u4e3a\u5c0f\u5199\uff0c\u5426\u5219\u5c06\u627e\u4e0d\u5230\u6570\u636e\u5e93\u540d\u3002<\/li>\n\n\n\n
      • \u6b64\u53c2\u6570\u9002\u7528\u4e8eMySQL5.7\u3002\u5728MySQL 8\u4e0b\u7981\u6b62\u5728\u91cd\u65b0\u542f\u52a8 MySQL \u670d\u52a1\u65f6\u5c06 lower_case_table_names \u8bbe\u7f6e\u6210\u4e0d\u540c\u4e8e\u521d\u59cb\u5316 MySQL \u670d\u52a1\u65f6\u8bbe\u7f6e\u7684 lower_case_table_names \u503c\u3002\u5982\u679c\u975e\u8981\u5c06MySQL8\u8bbe\u7f6e\u4e3a\u5927\u5c0f\u5199\u4e0d\u654f\u611f\uff0c\u5177\u4f53\u6b65\u9aa4\u4e3a\uff1a
        1\u3001\u505c\u6b62MySQL\u670d\u52a1
        2\u3001\u5220\u9664\u6570\u636e\u76ee\u5f55\uff0c\u5373\u5220\u9664 \/var\/lib\/mysql \u76ee\u5f55
        3\u3001\u5728MySQL\u914d\u7f6e\u6587\u4ef6\uff08 \/etc\/my.cnf \uff09\u4e2d\u6dfb\u52a0 lower_case_table_names=1
        4\u3001\u542f\u52a8MySQL\u670d\u52a1<\/li>\n<\/ul>\n\n\n\n
         7. sql_mode\u7684\u5408\u7406\u8bbe\u7f6e<\/h2>\n\n\n\n
        sql_mode \u4f1a\u5f71\u54cd MySQL \u652f\u6301\u7684 SQL \u8bed\u6cd5\u4ee5\u53ca\u5b83\u6267\u884c\u7684 \u6570\u636e\u9a8c\u8bc1\u68c0\u67e5\u3002\u901a\u8fc7\u8bbe\u7f6e sql_mode\uff0c\u53ef\u4ee5\u5b8c\u6210\u4e0d\u540c\u4e25\u683c\u7a0b\u5ea6\u7684\u6570\u636e\u6821\u9a8c\uff0c\u6709\u6548\u5730\u4fdd\u969c\u6570\u636e\u51c6\u786e\u6027\u3002<\/p>\n\n\n\n
        MySQL \u670d\u52a1\u5668\u53ef\u4ee5\u5728\u4e0d\u540c\u7684 SQL \u6a21\u5f0f\u4e0b\u8fd0\u884c\uff0c\u5e76\u4e14\u53ef\u4ee5\u9488\u5bf9\u4e0d\u540c\u7684\u5ba2\u6237\u7aef\u4ee5\u4e0d\u540c\u7684\u65b9\u5f0f\u5e94\u7528\u8fd9\u4e9b\u6a21\u5f0f\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e sql_mode \u7cfb\u7edf\u53d8\u91cf\u7684\u503c\u3002<\/p>\n\n\n\n
        MySQL 5.6 \u548c MySQL 5.7 \u9ed8\u8ba4\u7684 sql_mode \u6a21\u5f0f\u53c2\u6570\u662f\u4e0d\u4e00\u6837\u7684\uff1a
        - 5.6 \u7684 mode \u9ed8\u8ba4\u503c\u4e3a\u7a7a\uff08\u5373\uff1aNO_ENGINE_SUBSTITUTION\uff09\uff0c\u5176\u5b9e\u8868\u793a\u7684\u662f\u4e00\u4e2a\u7a7a\u503c\uff0c\u76f8\u5f53\u4e8e\u6ca1\u6709\u4ec0\u4e48\u6a21\u5f0f\u8bbe\u7f6e\uff0c\u53ef\u4ee5\u7406\u89e3\u4e3a\u5bbd\u677e\u6a21\u5f0f\u3002\u5728\u8fd9\u79cd\u8bbe\u7f6e\u4e0b\u662f\u53ef\u4ee5\u5141\u8bb8\u4e00\u4e9b\u975e\u6cd5\u64cd\u4f5c\u7684\uff0c\u6bd4\u5982\u5141\u8bb8\u4e00\u4e9b\u975e\u6cd5\u6570\u636e\u7684\u63d2\u5165\u3002
        - 5.7 \u7684 mode \u662f STRICT_TRANS_TABLES\uff0c\u4e5f\u5c31\u662f \u4e25\u683c\u6a21\u5f0f\u3002\u7528\u4e8e\u8fdb\u884c\u6570\u636e\u7684\u4e25\u683c\u6821\u9a8c\uff0c\u9519\u8bef\u6570\u636e\u4e0d\u80fd\u63d2\u5165\uff0c\u62a5 error\uff08\u9519\u8bef\uff09\uff0c\u5e76\u4e14\u4e8b\u52a1\u56de\u6eda\u3002<\/p>\n\n\n\n
        7.2 \u5bbd\u677e\u6a21\u5f0f vs \u4e25\u683c\u6a21\u5f0f<\/h3>\n\n\n\n
        \u5bbd\u677e\u6a21\u5f0f\uff1a<\/strong> \u5982\u679c\u8bbe\u7f6e\u7684\u662f\u5bbd\u677e\u6a21\u5f0f\uff0c\u90a3\u4e48\u6211\u4eec\u5728\u63d2\u5165\u6570\u636e\u7684\u65f6\u5019\uff0c\u5373\u4fbf\u662f\u7ed9\u4e86\u4e00\u4e2a\u9519\u8bef\u7684\u6570\u636e\uff0c\u4e5f\u53ef\u80fd\u4f1a\u88ab\u63a5\u53d7\uff0c \u5e76\u4e14\u4e0d\u62a5\u9519\u3002<\/p>\n\n\n\n
        \u4e3e\u4f8b\uff1a\u6211\u5728\u521b\u5efa\u4e00\u4e2a\u8868\u65f6\uff0c\u8be5\u8868\u4e2d\u6709\u4e00\u4e2a\u5b57\u6bb5\u4e3aname\uff0c\u7ed9name\u8bbe\u7f6e\u7684\u5b57\u6bb5\u7c7b\u578b\u65f6 \u5728\u63d2\u5165\u6570\u636e\u7684\u65f6\u5019\uff0c\u5176\u4e2dname\u8fd9\u4e2a\u5b57\u6bb5\u5bf9\u5e94\u7684\u6709\u4e00\u6761\u6570\u636e\u7684 char(10) \uff0c\u5982\u679c\u6211 \u957f\u5ea6\u8d85\u8fc7\u4e8610\uff0c\u4f8b\u5982'1234567890abc'\uff0c\u8d85 \u8fc7\u4e86\u8bbe\u5b9a\u7684\u5b57\u6bb5\u957f\u5ea610\uff0c\u90a3\u4e48\u4e0d\u4f1a\u62a5\u9519\uff0c\u5e76\u4e14\u53d6\u524d10\u4e2a\u5b57\u7b26\u5b58\u4e0a\uff0c\u4e5f\u5c31\u662f\u8bf4\u4f60\u8fd9\u4e2a\u6570\u636e\u88ab\u5b58\u4e3a \u4e86'1234567890'\uff0c\u800c'abc'\u5c31\u6ca1\u6709\u4e86\u3002\u4f46\u662f\uff0c\u6211\u4eec\u7ed9\u7684\u8fd9\u6761\u6570\u636e\u662f\u9519\u8bef\u7684\uff0c\u56e0\u4e3a\u8d85\u8fc7\u4e86\u5b57\u6bb5\u957f\u5ea6\uff0c\u4f46\u662f\u5e76\u6ca1 \u6709\u62a5\u9519\uff0c\u5e76\u4e14mysql\u81ea\u884c\u5904\u7406\u5e76\u63a5\u53d7\u4e86\uff0c\u8fd9\u5c31\u662f\u5bbd\u677e\u6a21\u5f0f\u7684\u6548\u679c\u3002<\/p>\n\n\n\n
        \u5e94\u7528\u573a\u666f\uff1a\u901a\u8fc7\u8bbe\u7f6esql mode\u4e3a\u5bbd\u677e\u6a21\u5f0f\uff0c\u6765\u4fdd\u8bc1\u5927\u591a\u6570sql\u7b26\u5408\u6807\u51c6\u7684sql\u8bed\u6cd5\uff0c\u8fd9\u6837\u5e94\u7528\u5728\u4e0d\u540c\u6570\u636e \u5e93\u4e4b\u95f4\u8fdb\u884c \u8fc1\u79fb\u65f6\uff0c\u5219\u4e0d\u9700\u8981\u5bf9\u4e1a\u52a1sql \u8fdb\u884c\u8f83\u5927\u7684\u4fee\u6539\u3002<\/p>\n\n\n\n
        \u4e25\u683c\u6a21\u5f0f\uff1a<\/strong> \u51fa\u73b0\u4e0a\u9762\u5bbd\u677e\u6a21\u5f0f\u7684\u9519\u8bef\uff0c\u5e94\u8be5\u62a5\u9519\u624d\u5bf9\uff0c\u6240\u4ee5MySQL5.7\u7248\u672c\u5c31\u5c06sql_mode\u9ed8\u8ba4\u503c\u6539\u4e3a\u4e86\u4e25\u683c\u6a21\u5f0f\u3002\u6240 \u4ee5\u5728\u751f \u4ea7\u7b49\u73af\u5883\u4e2d\uff0c\u6211\u4eec\u5fc5\u987b\u91c7\u7528\u7684\u662f\u4e25\u683c\u6a21\u5f0f\uff0c\u8fdb\u800c \u5f00\u53d1\u3001\u6d4b\u8bd5\u73af\u5883\u7684\u6570\u636e\u5e93\u4e5f\u5fc5\u987b\u8981\u8bbe\u7f6e\uff0c\u8fd9\u6837\u5728 \u5f00\u53d1\u6d4b\u8bd5\u9636\u6bb5\u5c31\u53ef\u4ee5\u53d1\u73b0\u95ee\u9898\u3002\u5e76\u4e14\u6211\u4eec\u5373\u4fbf\u662f\u7528\u7684MySQL5.6\uff0c\u4e5f\u5e94\u8be5\u81ea\u884c\u5c06\u5176\u6539\u4e3a\u4e25\u683c\u6a21\u5f0f\u3002<\/p>\n\n\n\n
        \u5f00\u53d1\u7ecf\u9a8c\uff1aMySQL\u7b49\u6570\u636e\u5e93\u603b\u60f3\u628a\u5173\u4e8e\u6570\u636e\u7684\u6240\u6709\u64cd\u4f5c\u90fd\u81ea\u5df1\u5305\u63fd\u4e0b\u6765\uff0c\u5305\u62ec\u6570\u636e\u7684\u6821\u9a8c\uff0c\u5176\u5b9e\u5f00\u53d1 \u4e2d\uff0c\u6211\u4eec\u5e94\u8be5\u5728\u81ea\u5df1 \u5f00\u53d1\u7684\u9879\u76ee\u7a0b\u5e8f\u7ea7\u522b\u5c06\u8fd9\u4e9b\u6821\u9a8c\u7ed9\u505a\u4e86\uff0c\u867d\u7136\u5199\u9879\u76ee\u7684\u65f6\u5019\u9ebb\u70e6\u4e86\u4e00\u4e9b\u6b65\u9aa4\uff0c\u4f46\u662f\u8fd9 \u6837\u505a\u4e4b\u540e\uff0c\u6211\u4eec\u5728\u8fdb\u884c\u6570\u636e\u5e93\u8fc1\u79fb\u6216\u8005\u5728\u9879\u76ee\u7684\u8fc1\u79fb\u65f6\uff0c\u5c31\u4f1a\u65b9\u4fbf\u5f88\u591a\u3002<\/p>\n\n\n\n
        \u6539\u4e3a\u4e25\u683c\u6a21\u5f0f\u540e\u53ef\u80fd\u4f1a\u5b58\u5728\u7684\u95ee\u9898\uff1a \u82e5\u8bbe\u7f6e\u6a21\u5f0f\u4e2d\u5305\u542b\u4e86 NO_ZERO_DATE \uff0c\u90a3\u4e48MySQL\u6570\u636e\u5e93\u4e0d\u5141\u8bb8\u63d2\u5165\u96f6\u65e5\u671f\uff0c\u63d2\u5165\u96f6\u65e5\u671f\u4f1a\u629b\u51fa\u9519\u8bef\u800c \u4e0d\u662f\u8b66\u544a\u3002\u4f8b\u5982\uff0c\u8868\u4e2d\u542b\u5b57\u6bb5TIMESTAMP\u5217\uff08\u5982\u679c\u672a\u58f0\u660e\u4e3aNULL\u6216\u663e\u793aDEFAULT\u5b50\u53e5\uff09\u5c06\u81ea\u52a8\u5206\u914d DEFAULT '0000-00-00 00:00:00'\uff08\u96f6\u65f6\u95f4\u6233\uff09\uff0c\u8fd9\u663e\u7136\u662f\u4e0d\u6ee1\u8db3sql_mode\u4e2d\u7684NO_ZERO_DATE\u800c\u62a5\u9519\u3002\"\"<\/p>\n\n\n\n
        CREATE TABLE mytbl2 (id INT, NAME VARCHAR(16), age INT, dept INT) ;\n\nINSERT INTO mytbl2 VALUES (1, 'zhang3', 33, 101);\nINSERT INTO mytbl2 VALUES (2, 'li4', 34, 101);\nINSERT INTO mytbl2 VALUES (3, 'wang5', 34, 102);\nINSERT INTO mytbl2 VALUES (4, 'zhao6', 34, 102);\nINSERT INTO mytbl2 VALUES (5, 'tian7', 36, 102);\n\n# \u67e5\u8be2\u6bcf\u4e2a\u90e8\u95e8\u5e74\u9f84\u6700\u5927\u7684\u4eba\nSELECT NAME, dept, MAX(age) FROM mytbl2 GROUP BY dept ;\n\n# \u67e5\u8be2\u6bcf\u4e2a\u90e8\u95e8\u5e74\u9f84\u6700\u5927\u7684\u4eba\nSELECT NAME, dept, MAX(age)\nFROM mytbl2\nGROUP BY dept ;\n\n# \u8bbe\u7f6esql_mode\nSET SESSION sql_mode = '';<\/code><\/pre>\n\n\n\n
        \"\"<\/p>\n","protected":false},"excerpt":{"rendered":"
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