第1个回答 2007-04-21
create database shopping
on primary
(
name = 'shopdata',
filename = 'c:\shop.mdf',
size = 10mb,
maxsize = 100mb,
filegrowth = 1mb
)
log on
(
name = 'shoplog',
filename = 'c:\shop.log',
size = 10mb,
maxsize = 100mb,
filegrowth = 1mb
)
go
create table shoptable
(
sno varchar(10),
gno varchar(10),
qty int
)
go
insert into shoptable values('s01','g01','500')
go
insert into shoptable values('s01','g02','100')
go
insert into shoptable values('s02','g01','200')
go
insert into shoptable values('s03','g03','500')
go
insert into shoptable values('s03','g01','450')
go
insert into shoptable values('s04','g07','560')
go
insert into shoptable values('s06','g06','100')
go
insert into shoptable values('s07','g07','152')
go
/*查询平均销售量最高的商品号*/
select top 1 gno from shoptable where qty > (select avg(qty) from shoptable) order by qty desc