SQL Server 2008中的分解汇总表
我收到了来自外部来源的数据,它是一种摘要格式。我需要一种方法将其分解,以适合我正在使用的系统 为了举例说明,假设我收到的数据如下所示:SQL Server 2008中的分解汇总表,sql,sql-server-2008,summarization,Sql,Sql Server 2008,Summarization,我收到了来自外部来源的数据,它是一种摘要格式。我需要一种方法将其分解,以适合我正在使用的系统 为了举例说明,假设我收到的数据如下所示: receivedTable: Age Gender Count 40 M 3 41 M 2 systemTable: ID Age Gender 1 40 M 2 40 M 3
receivedTable:
Age Gender Count
40 M 3
41 M 2
systemTable:
ID Age Gender
1 40 M
2 40 M
3 40 M
4 41 M
5 41 M
我想这是一个像这样的分类格式:
receivedTable:
Age Gender Count
40 M 3
41 M 2
systemTable:
ID Age Gender
1 40 M
2 40 M
3 40 M
4 41 M
5 41 M
谢谢
卡尔根据您的计数范围,您可以使用一个查找表,该表精确地保存每个整数x的x条记录。像这样:
create table counter(num int)
insert into counter select 1
insert into counter select 2
insert into counter select 2
insert into counter select 3
insert into counter select 3
insert into counter select 3
insert into counter select 4
insert into counter select 4
insert into counter select 4
insert into counter select 4
然后加入此表:
create table source(age int, gender char(1), num int)
insert into source select 40, 'm', 3
insert into source select 30, 'f', 2
insert into source select 20, 'm', 1
--insert into destination(age, gender)
select age, gender
from source
inner join counter on counter.num = source.num
从我的机器上的工作来看,这是一个递归查询,其中包含关于最大递归深度的所有常见警告
with Expanded(exAge, exGender, exRowIndex) as
(
select
Age as exAge,
Gender as exGender,
1 as exRowIndex
from
tblTest1
union all
select
exAge,
exGender,
exRowIndex+1
from
tblTest1 t1
inner join
Expanded e on (e.exAge = t1.Age and e.exGender = t1.Gender and e.exRowIndex < t1.Count)
)
select
exAge,
exGender,
exRowIndex
from
Expanded
order by
exAge,
exGender,
exRowIndex
option (MAXRECURSION 0) -- BE CAREFUL!!
您无法获得行标识符,但将查询结果插入到具有标识列的表中可以解决这一问题。Cool,integers table。这将非常有效。我的计数范围增加到数千,所以我想我需要一个脚本来自动生成表