Mysql Database基本知识(1)——来自攻城课堂

1.creaat table [table_name](

　　name varchar(255),

　　age int(11)

);

2.drop table [table_name];

3.use [database_name];

4.alter table [table_name] add [column_name] [data_type] [not null][default];

5.alter table [table_name] drop [column_name];

6.alter table [table_name] change [colume_name] [new_colnume_name] [ElementType];

7.alter table [table_name] rename [new_table_name];

8.select * from [table_name];

9.select [col_name1] [col_name2],,,, from [table_name];

10.insert into [table_name] values(x, y, z,,,,);//all colume_name

11.insert into [table_name]([colume_name] [colume_name]....) values(x, y, z,,,,);//specialy colume_name;

12.select * from [table_name] where [colume_name] [operator] [value];//=, !=, >, <, >=, <=, between, like

13.select * from [table_name] where [col_name] [oprerator] [value] and [col_name] [operator] [value];

14.select * from [table_name] where [col_name] is [null];

15.select * from [table_name] where [col_name] is not [null];

16.select distinct [col_name],,,, from [table_name];

17.select * from table_name [where  ] order by [col_name] [asc/desc]； // 升序/降序

18.select * from table_name [where  ] order by [col_name1] [asc/desc], [col_name2] [asc/desc],,,,;//优先度从左到右

19.select * from table_name [where  ] [order by ] limit [offset,] [rowCount];

20.insert into [table_name1] select [col_name1],[col_name2],,, from [table_name2] [where];

21.insert into [table_name1]([col_name1] [col_name2],,,) select [col_name3] [col_name4],,, from [table_name2] [where];