进入docker命令:docker exec -it 容器id bash
后台连接数据库的命令
mysql -u用户名 -p密码 连接本身数据库
mysql -h ip -u用户名 -p密码 在一个环境中连接另一个环境数据库
creat database test charset :utf8;
show databases; 展示数据库
use test 使用test数据库
select database();
show tables;
select * from dxm;
选择:select * from table1 where 范围
插入:insert into table1(field1,field2) values(value1,value2)
删除:delete from table1 where 范围
更新:update table1 set field1=value1 where 范围
查找:select * from table1 where field1 like ’%value1%’ ---like的语法很精妙,查资料!
排序:select * from table1 order by field1,field2 [desc]
总数:select count as totalcount from table1
求和:select sum(field1) as sumvalue from table1
平均:select avg(field1) as avgvalue from table1ddddddddd
最大:select max(field1) as maxvalue from table1