Oracle和mysql的一些简单命令对比参照[组图]_MySQL
Oracle 和 mysql 的一些简单命令对比参照
Oracle mysql 对比版本 Personal Oracle7 Release 7.3.4.0.0 mysql 3.22.34-shareware-debug 启动画面
默认安装目录 C:ORAWIN95 C:MYSQL 各种实用程序所在目录 C:ORAWIN95BIN C:MYSQLBIN 控制台工具 SVRMGR.EXE
SVRMGR23.EXE mysqladmin.exe 数据库启动程序 0start73.exe screen mysqld-shareware.exe 关闭数据库命令 ostop73.exe mysqladmin.exe -u root shutdown 客户程序 SQL*Plus mysql 启动命令 c:orawin95insqlplus.exe c:mysqlinmysql.exe 带用户启动方式
(直接连库方式) c:orawin95insqlplus.exe system/manager@TNS c:mysqlinmysql.exe test
c:mysqlinmysql.exe -u root test 安装后系统默认用户(库) sys
system
scott mysql
test 显示所有用户(库) SQL >select * from all_users; C:mysqlin>mysqlshow
C:mysqlin>mysqlshow --status
mysql> show databases; 退出命令 SQL> exit
SQL> quit mysql> exit
mysql> quit 改变连接用户(库) SQL> conn 用户名/密码@主机字符串 mysql> use 库名 查询当前所有的表 SQL> select * from tab;
SQL> select * from cat; mysql> show tables;
c:mysqlin>mysqlshow 库名 显示当前连接用户(库) SQL> show user mysql> connect 查看帮助 SQL> ? mysql> help 显示表结构 SQL> desc 表名
SQL> describe 表名 mysql> desc 表名;
mysql> describe 表名;
mysql> show columns from 表名;
c:mysqlin>mysqlshow 库名 表名 日期函数 SQL> select sysdate from dual; mysql> select now();
mysql> select sysdate();
mysql> select curdate();
mysql> select current_date;
mysql> select curtime();
mysql> select current_time;
日期格式化 SQL> select to_char(sysdate,''yyyy-mm-dd'') from dual;
SQL> select to_char(sysdate,''hh24-mi-ss'') from dual;
mysql> select date_format(now(),''%Y-%m-%d'');
mysql> select time_format(now(),''%H-%i-%S'');

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