INSERT INTO 语句可以有两种用法:
1、第一种形式无需指定要插入数据的列名,只需提供被插入的值即可:
INSERT INTO table_name
VALUES (value1,value2,value3,...)
2、第二种形式需要指定列名及被插入的值:
INSERT INTO table_name (column1,column2,column3,...)
VALUES (value1,value2,value3,...)
其他SQL语句:
创建新数据库:CREATE DATABASE
修改数据库:ALTER DATABASE
创建新表:CREATE TABLE
变更(改变)数据库表:ALTER TABLE
删除表:DROP TABLE
创建索引(搜索键):CREATE INDEX
删除索引:DROP INDEX
删除主键:Alter table tabname drop primary key(col)
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%’
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 table1
最大:select max(field1) as maxvalue from table1
最小:select min(field1) as minvalue from table1