SQLServer_第3章 表数据操作

第3章 表数据操作

3.1 界面操作表数据

3.2 命令操作表数据

3.2.1 insert语句

Insert基本格式：insert into table_name values(constant1,constant2,…)
例1：
use xscj
insert into xs values ('001122','张三','计算机',1,'1/30/1980 0:0:0',40,null)
insert完整语法格式为：
insert into { table_name with table_hint_limited | view_name | rowset_function_limited }
{(columns list) values ({default | null | expression }….) | derived_table| execute-statement}| default values [/u]

3.2.2 delete 或trancate table 语句删除数据

1.delete语句
Delete from table_name | view_name where <search_condition>
2.trancate table 清空所有数据

3.2.3 update语句修改数据

Update table_name|view_name
Set
Column_name1={expression|default|null}, Column_name2={expression|default|null}……
Where
<search_condition>
例：update xs
set stu_memo='三好生'
where
stu_id='001122'
练习:
insert into product
values('0001','空调',3000,200,null)

insert into product
values('0203','冰箱',2500,100,null)

insert into product
values('0301','彩电',2800,50,null)

update product
set product_price=product_price*0.8

delete from product
where product_price<1700