MS Access 2010：根据1个价格记录创建多个星期记录

Question

你能帮我解决以下问题： 我有table1有5个字段：ProductID，price，startWeek，endWeek，numWeeks;

xx ProdID xx price xx startWeek xx endWeek xx NumWeeks 
    Prod1  $15  1   3   3 
    Prod2  $20  2   4   3 

我需要创建另一个表2，按ProductID每周录制的价格，让每个产品都将会有记录的数量每个星期，这样的：

Prod1 week1 $15, 
Prod1 week2 $15 
Prod1 week3 $15 
Prod2 week2 $20 
Prod2 week3 $20 
Prod3 week4 $20 

提前非常感谢

Answer 1

TEST SQLFiddle

首先，我将创建一个表数周。它通常被称为统计表或数字表。

你可以通过创建一个VBA，但我wanto简单地保持（长，但简单地）

，必须运行此代码只是一个时间。

create table weeks(weekNumber int, weekName varchar(10)) 
insert into weeks 
select 1, 'week1' 
union all 
select 2, 'week2' 
union all 
select 3, 'week3' 
union all 
select 4, 'week4' 
union all 
select 5, 'week5' 
union all 
select 6, 'week6' 
union all 
select 7, 'week7' 
union all 
select 8, 'week8' 
union all 
select 9, 'week9' 
union all 
select 10, 'week10' 
union all 
select 11, 'week11' 
union all 
select 12, 'week12' 
union all 
select 13, 'week13' 
union all 
select 14, 'week14' 
union all 
select 15, 'week15' 
union all 
select 16, 'week16' 
union all 
select 17, 'week17' 
union all 
select 18, 'week18' 
union all 
select 19, 'week19' 
union all 
select 20, 'week20' 
union all 
select 21, 'week21' 
union all 
select 22, 'week22' 
union all 
select 23, 'week23' 
union all 
select 24, 'week24' 
union all 
select 25, 'week25' 
union all 
select 26, 'week26' 
union all 
select 27, 'week27' 
union all 
select 28, 'week28' 
union all 
select 29, 'week29' 
union all 
select 30, 'week30' 
union all 
select 31, 'week31' 
union all 
select 32, 'week32' 
union all 
select 33, 'week33' 
union all 
select 34, 'week34' 
union all 
select 35, 'week35' 
union all 
select 36, 'week36' 
union all 
select 37, 'week37' 
union all 
select 38, 'week38' 
union all 
select 39, 'week39' 
union all 
select 40, 'week40' 
union all 
select 41, 'week41' 
union all 
select 42, 'week42' 
union all 
select 43, 'week43' 
union all 
select 44, 'week44' 
union all 
select 45, 'week45' 
union all 
select 46, 'week46' 
union all 
select 47, 'week47' 
union all 
select 48, 'week48' 
union all 
select 49, 'week49' 
union all 
select 50, 'week50' 
union all 
select 51, 'week51' 
union all 
select 52, 'week52' 
union all 
select 53, 'week53' 
union all 
select 54, 'week54' 
union all 
select 55, 'week55' 

然后将溶液很简单：

1创建表2，只运行一次

create table table2(ProductID varchar(10), weekName varchar(10), price int) 

做的工作

insert into table2 
    select a.ProductID, w.weekName, a.price 
    from table1 a inner join weeks w 
    on a.startWeek<=w.weekNumber and a.endWeek>=w.weekNumber 

得到的结果

select * from table2 

个

结果：

ProductID weekName price 
Prod1  week1  15 
Prod1  week2  15 
Prod1  week3  15 
Prod2  week2  20 
Prod2  week3  20 
Prod2  week4  20 

TEST SQLFiddle