[AccessD] Carry Forward in a query

Kaup, Chester Chester_Kaup at kindermorgan.com
Tue Nov 14 16:40:39 CST 2006


Here is what I have now. One table with dates and one table like below.
Query SQL as below. This works great.

SELECT T_PriceCurrent.SDate, 
(Select Price from T_PriceIndex as T1 where T1.SDate=(Select Max(SDate) 
from T_PriceIndex AS T2 where T2.SDate<=T_PriceCurrent.SDate)) 
AS PriceCurrent
FROM T_PriceCurrent;

SDate		Price
1/1/2005	8.56
1/23/2005	8.73
2/14/2005	8.40
3/1/2005	8.00
3/12/2005	8.45
3/27/2005	8.95
4/7/2005	8.12
4/30/2005	7.95
5/14/2005	8.03
5/27/2005	8.24
6/10/2005	9.03
6/25/2005	9.17
7/3/2005	9.25
7/27/2005	9.40
8/3/2005	9.64

What I cannot figure how to do is make it work if table looks like
below. I need output for each Pattern.
Pattern	SDate	Price
1	1/1/2005	8.56
1	1/23/2005	8.73
1	2/14/2005	8.40
1	3/1/2005	8.00
1	3/12/2005	8.45
1	3/27/2005	8.95
1	4/7/2005	8.12
1	4/30/2005	7.95
1	5/14/2005	8.03
1	5/27/2005	8.24
1	6/10/2005	9.03
1	6/25/2005	9.17
1	7/3/2005	9.25
1	7/27/2005	9.40
1	8/3/2005	9.64
2	1/7/2005	8.27
2	1/24/2005	8.71
2	2/13/2005	8.35
2	3/2/2005	8.02
2	3/13/2005	8.44
2	3/28/2005	8.93
2	4/6/2005	8.10
2	4/28/2005	7.98
2	5/15/2005	8.05
2	5/25/2005	8.20
2	6/9/2005	9.00
2	6/20/2005	9.15
2	7/1/2005	9.23
2	7/25/2005	9.35
2	8/4/2005	9.65
2	8/15/2005	9.50

Thanks for any ideas.

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Hale, Jim
Sent: Tuesday, November 14, 2006 3:59 PM
To: 'Access Developers discussion and problem solving'
Subject: Re: [AccessD] Carry Forward in a query

If I understand what you want to do, I have done this with a non
cartesian
join. I create a table with a one field record and  one record for each
date. In the query window I place this table and the table with the
record
you want to duplicate WITHOUT ANY JOIN. the resulting data set produces
one
record for each date. HTH
Jim Hale

-----Original Message-----
From: Kaup, Chester [mailto:Chester_Kaup at kindermorgan.com]
Sent: Tuesday, November 14, 2006 3:13 PM
To: Access Developers discussion and problem solving
Subject: [AccessD] Carry Forward in a query


I have a table of data that has a record about every 6 months. I would
like to generate a record for every month using the previous months data
until there is data for the current records month. I can do this in code
but had a coworker ask if it could be done in a query. I am not coming
up with an answer. Your thoughts please.

 

Chester Kaup

Engineering Technician

Kinder Morgan CO2 Company, LLP

Office (432) 688-3797

FAX (432) 688-3799

 

 

No trees were killed in the sending of this message. However a large
number of electrons were terribly inconvenienced.

 

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