日期:2014-05-18  浏览次数:20610 次

请教句sql,数据格式(年月日,省份代码,城市代码,客户代码,购进量),求3-12月任一月份购进大于0但1、2月无购进的客户数 内附测试数据
年月日 省份代码 城市代码 客户代码 购进量
20100101 1 11 111 0
20100101 1 11 111 0
20100101 1 11 112 1
20100201 1 11 111 0
20100201 1 11 111 0
20100201 1 11 112 1
20100301 1 11 111 2
20100301 1 11 111 0
20100301 1 11 112 1
20100401 1 11 111 0
20100401 1 11 111 0
20100401 1 11 112 1
20100501 1 11 111 0
20100501 1 11 111 0
20100501 1 11 112 1
20100601 1 11 111 0
20100601 1 11 111 0
20100601 1 11 112 1
20100701 1 11 111 0
20100701 1 11 111 0
20100701 1 11 112 1
20100801 1 11 111 0
20100801 1 11 111 0
20100801 1 11 112 1
20100901 1 11 111 0
20100901 1 11 111 0
20100901 1 11 112 1
20101001 1 11 111 0
20101001 1 11 111 0
20101001 1 11 112 1
20101101 1 11 111 0
20101101 1 11 111 0
20101101 1 11 112 1
20101201 1 11 111 0
20101201 1 11 111 0
20101201 1 11 112 1


------解决方案--------------------
SQL code
--> 测试数据: #tb
if object_id('tempdb.dbo.#tb') is not null drop table #tb
create table #tb (年月日 datetime,省份代码 int,城市代码 int,客户代码 int,购进量 int)
insert into #tb
select '20100101',1,11,111,0 union all
select '20100101',1,11,111,0 union all
select '20100101',1,11,112,1 union all
select '20100201',1,11,111,0 union all
select '20100201',1,11,111,0 union all
select '20100201',1,11,112,1 union all
select '20100301',1,11,111,2 union all
select '20100301',1,11,111,0 union all
select '20100301',1,11,112,1 union all
select '20100401',1,11,111,0 union all
select '20100401',1,11,111,0 union all
select '20100401',1,11,112,1 union all
select '20100501',1,11,111,0 union all
select '20100501',1,11,111,0 union all
select '20100501',1,11,112,1 union all
select '20100601',1,11,111,0 union all
select '20100601',1,11,111,0 union all
select '20100601',1,11,112,1 union all
select '20100701',1,11,111,0 union all
select '20100701',1,11,111,0 union all
select '20100701',1,11,112,1 union all
select '20100801',1,11,111,0 union all
select '20100801',1,11,111,0 union all
select '20100801',1,11,112,1 union all
select '20100901',1,11,111,0 union all
select '20100901',1,11,111,0 union all
select '20100901',1,11,112,1 union all
select '20101001',1,11,111,0 union all
select '20101001',1,11,111,0 union all
select '20101001',1,11,112,1 union all
select '20101101',1,11,111,0 union all
select '20101101',1,11,111,0 union all
select '20101101',1,11,112,1 union all
select '20101201',1,11,111,0 union all
select '20101201',1,11,111,0 union all
select '20101201',1,11,112,1

select count(distinct 客户代码 ) as N
from #tb t
where month(年月日)>2 and 购进量>0
 and not exists(select 1 from #tb where 客户代码=t.客户代码 and month(年月日)<=2 and 购进量>0)


N
-----------
1

(1 行受影响)

------解决方案--------------------
SQL code
create table tb (年月日 datetime,省份代码 int,城市代码 int,客户代码 int,购进量 int)
insert into tb
select '20100101',1,11,111,0 union all
select '20100101',1,11,111,0 union all
select '20100101',1,11,112,1 union all
select '20100201',1,11,111,0 union all
select '20100201',1,11,111,0 union all
select '20100201',1,11,112,1 union all
select '20100301',1,11,111,2 union all
select '20100301',1,11,111,0 union all
select '20100301',1,11,112,1 union all
select '20100401',1,11,111,0 union all
select '20100401',1,11,111,0 union all
select '20100401',1,11,112,1 union all
select '20100501',1,11,111,0 union all
select '20100501',1,11,111,0 union all
select '20100501',1,11,112,1 union all
select '20100601',1,11,111,0 union all
select '20100601',1,11,111,0 union all
select '20100601',1,11,112,1 union all
select '20100701',1,11,111,0 union all
select '20100701',1,11,111,0 union all
select '20100701',1,11,112,1 union all
select '20100801',1,11,111,0 union all
select '20100801',1,11,111,0 union all
select '20100801',1,11,112,1 union all
select '20100901',1,11,111,0 un