根据品牌和小类名称取得对应的客户资料（可用）

--根据小类名称和品牌名来取客户信息
declare @brandname nvarchar(50)
declare @categoryname nvarchar(50) ---分类的中文名

 

set @categoryname='空调'
set @brandname='海尔'

--取得ClassID
declare @categoryid nvarchar(15)
if OBJECT_ID('Tempdb.dbo.#categoryids') is not null
begin
 print 'Exists Table Tempdb.dbo.#categoryids'
end
else
begin
 print 'Not Exists Table Tempdb.dbo.#categoryids'
 create Table #categoryids(
  [categoryid] [nvarchar](15) not null
 )
end
declare categoryidsCursor cursor for
 select ClassID from FS_MS_ProductsClass where ClassCName=@categoryname
open categoryidsCursor
fetch categoryidsCursor into @categoryid
while @@FETCH_STATUS=0
begin
 insert into #categoryids (categoryid) values (@categoryid)
 fetch next from categoryidsCursor into @categoryid
end
close categoryidsCursor
deallocate categoryidsCursor
--select distinct * from #categoryids

 

--取得品牌ID
declare @brandid char(3)
if OBJECT_ID('Tempdb.dbo.#brandids') is not null
begin
 print 'Exists Table Tempdb.dbo.#brandids'
 --drop table #categoryids
end
else
begin
 print 'Not Exists Table Tempdb.dbo.#brandids'
 create table #brandids(
  [bid] [char](3) not null
 )
end
declare brandidsCursor cursor for
 select bid from FS_MS_Brand where brandname=@brandname
open brandidsCursor
fetch brandidsCursor into @brandid
while @@FETCH_STATUS=0
begin
 insert into #brandids (bid) values (@brandid)
 fetch next from brandidsCursor into @brandid
end
close brandidsCursor
deallocate brandidsCursor
--select distinct * from #brandids

 

declare @bid char(3)
declare @classid nvarchar(15)
declare @prdtid char(7)
if OBJECT_ID('Tempdb.dbo.#prdtids') is not null
begin
 print 'Exists Table Tempdb.dbo.#prdtids'
end
else
begin
 print 'Mot Exists Table Tempdb.dbo.#prdtids'
 create table #prdtids(
  [prdtid] [char](7) not null
 )
end
declare brandidCursor cursor for
 select distinct bid from #brandids
open brandidCursor
fetch brandidCursor into @bid
while @@FETCH_STATUS=0
begin
 --对这个品牌各个产品小类进行产品筛选开始
 declare classidCursor cursor for
  select distinct categoryid from #categoryids
 open classidCursor
 fetch classidCursor into @classid
 while @@FETCH_STATUS=0
 begin
  --对小分类进行筛选开始
  IF CURSOR_STATUS('global','prdtidInnerCusor')>=-1
  BEGIN
   DEALLOCATE prdtidInnerCusor
  END
  declare prdtidInnerCusor cursor for
   select prdtid from FS_MS_Products where ClassID=@classid and brandname=@bid
  open prdtidInnerCusor
  fetch prdtidInnerCusor into @prdtid
  while @@FETCH_STATUS=0
  begin
   insert into #prdtids (prdtid) values (@prdtid)
   fetch next from prdtidInnerCusor into @prdtid
  end
  close prdtidInnerCusor
  deallocate prdtidInnerCusor
  --结束
  fetch next from classidCursor into @classid
 end
 close classidCursor
 deallocate classidCursor
 --筛选结束
 fetch next from brandidCursor into @bid
end
close brandidCursor
deallocate brandidCursor
--select distinct prdtid from #prdtids

 

 

declare @bpc_orderid char(11)
declare @bpc_prdtid char(7)
declare @bpc_price money
declare @bpc_num float
declare @bpc_customer_id bigint
declare @bpc_out_prdtid char(7)

if OBJECT_ID('Tempdb.dbo.#clientids') is not null
begin
 print 'Exists Table Tempdb.dbo.#clientids'
end
else
begin
 print 'Not Exist Table Tempdb.dbo.#clientids'
 create table #clientids(
  [orderid] [char](11) not null,
  [prdtid] [char](7) not null,
  [price] money,
  [num] float,
  [customer_id] bigint
 )
end
declare out_prdtids_Cursor cursor for
 select distinct prdtid from #prdtids
open out_prdtids_Cursor
fetch out_prdtids_Cursor into @bpc_out_prdtid
while @@FETCH_STATUS=0
begin
 --内部比较开始
 declare bpcTotalCursor cursor for
 select mf_prdtorder_de.order_id,
 mf_prdtorder_de.prdtid,
 mf_prdtorder_de.price,
 mf_prdtorder_de.num,
 mf_prdtorder.customer_id
 FROM [mf_prdtorder_de],mf_prdtorder where mf_prdtorder.orderid=mf_prdtorder_de.order_id
 open bpcTotalCursor
 fetch bpcTotalCursor into @bpc_orderid,@bpc_prdtid,@bpc_price,@bpc_num,@bpc_customer_id
 while @@FETCH_STATUS=0
 begin
  if @bpc_prdtid=@bpc_out_prdtid
  begin
   insert into #clientids ([orderid],[prdtid],[price],[num],[customer_id]) values (@bpc_orderid,@bpc_prdtid,@bpc_price,@bpc_num,@bpc_customer_id)
  end
  fetch next from bpcTotalCursor into @bpc_orderid,@bpc_prdtid,@bpc_price,@bpc_num,@bpc_customer_id
 end
 close bpcTotalCursor
 deallocate bpcTotalCursor
 --内部比较结束
 fetch next from out_prdtids_Cursor into @bpc_out_prdtid
end
close out_prdtids_Cursor
deallocate out_prdtids_Cursor

--select distinct customer_id from #clientids
--select sys_customer.*
--from sys_customer where sys_customer.id in (select distinct customer_id from #clientids)

select sys_customer.id as '客户编号',
    sys_customer.realname as '客户姓名',
    sys_customer.tel as '电话',
    sys_customer.mobile as '手机',
    [FS_AP_Province].[Province] as '省份',
    [FS_AP_City].[City] as '城市',
    [FS_AP_Area].area as '区',
    sys_customer.[address] as '详细地址',
    sys_admin.[admin_real_name] as '服务业务员'
from sys_customer,[FS_AP_Province],[FS_AP_City],[FS_AP_Area],sys_admin
where [FS_AP_Province].[provinceID]=sys_customer.province
 and [FS_AP_City].cityID=sys_customer.city
 and [FS_AP_Area].[areaID]=sys_customer.area
 and sys_admin.admin_name=sys_customer.serviceby
 and sys_customer.id in (select distinct customer_id from #clientids)

 

 

 

等同写法：

 
  select [mf_prdtorder].[orderid] as '订单',
   [mf_prdtorder].[b_date] as '订单日期',
   [FS_MS_Brand].brandname+[FS_MS_Products].ProductTitle as '品牌型号',
   [mf_prdtorder_de].[num] as '购买数量',
   [mf_prdtorder].[customer_id] as '客户编号',
   [sys_customer].realname as '姓名',
   [sys_customer].tel as '电话',
   [sys_customer].mobile as '手机',
   [sys_customer].[address] as '地址'
     
   --[mf_prdtorder].[customer_id] as '客户编号',
   --[sys_customer].realname as '姓名',
   --[sys_customer].tel as '电话',
   --[sys_customer].mobile as '手机',
   --[sys_customer].[address] as '地址',
   --[mf_prdtorder_de].[prdtid] as '产品编号',
   --[mf_prdtorder_de].[num] as '购买数量',
   --[mf_prdtorder_de].[price] as '购买价格',
   --[FS_MS_Products].ProductTitle as '型号',
   --[FS_MS_Products].brandname as '品牌编号',
   --[FS_MS_Brand].brandname as '品牌名称'
  from [mf_prdtorder],[mf_prdtorder_de],[FS_MS_Products],[sys_customer],[FS_MS_Brand]
  where [mf_prdtorder].orderid=[mf_prdtorder_de].order_id
  and [FS_MS_Products].[prdtid]=[mf_prdtorder_de].prdtid
  and [sys_customer].[id]=[mf_prdtorder].[customer_id]
  and [FS_MS_Brand].bid=[FS_MS_Products].brandname

 

总结：

　　同样的条件，第二种写法耗时1秒，第一种1分钟！亏大了啊！