SQLServer中用存储过程去除表中重复客户信息

 以下是本人在建立多维数据集时对重复客户信息处理所采用的存储过程:

create procedure Sp_DeleteDuplicateCustomerInfo
as
 declare @CustomerId bigint
 declare @Count int
 declare @TopCount int
 declare @StrCustomerId char(7)
 declare @StrTopCount char(1)
 
 declare deleteCur cursor for
 select CustomerId,count(customerID) counts from T_CustomerInfo group by customerID
having count(customerID)>1
 open deleteCur
 fetch next from deleteCur into @CustomerId,@Count
 while @@fetch_status=0
 begin
  set @TopCount=@Count-1
  set @StrCustomerId = cast(@CustomerId as char(7))
  set @StrTopCount = cast(@TopCount as char(1))
  print 'delete from T_CustomerInfo where recId in
  (select top '+cast(@TopCount as char(1))+' recId from T_CustomerInfo where CustomerId='+cast(@CustomerId as char(7))

  exec('delete from T_CustomerInfo where recId in
  (select top '+@StrTopCount+' recId from T_CustomerInfo where CustomerId='+@StrCustomerId+')')

  fetch next from deleteCur into @CustomerId,@Count
 end
 close deleteCur
 deallocate deleteCur

go