Here is the SQL with the Start Date column. I had to use Nz()
SELECT Orders.Product, Orders.Description, Orders.Order, Orders.Qty, [Qty]*[Minutes] AS TotalMinutes,
(SELECT MIN(ProductionDate) FROM Orders)+Nz((SELECT Sum(P.Minutes * O.Qty) FROM Orders O INNER JOIN Products P ON O.Product = P.Product WHERE O.Order <Orders.Order)/(24*60),0) AS StartDate,
(SELECT MIN(ProductionDate) FROM Orders)+(SELECT Sum(P.Minutes * O.Qty) FROM Orders O INNER JOIN Products P ON O.Product = P.Product WHERE O.Order <=Orders.Order)/(24*60) AS EndDate
FROM Orders INNER JOIN Products ON Orders.Product = Products.Product
ORDER BY Orders.Order;
Duane
From: MS_Access_Professionals@yahoogroups.com <MS_Access_Professionals@yahoogroups.com> on behalf of lrheimpel@gmail.com [MS_Access_Professionals] <MS_Access_Professionals@yahoogroups.com>
Sent: Monday, July 2, 2018 9:25 AM
To: MS_Access_Professionals@yahoogroups.com
Subject: Re: [MS_AccessPros] Query: Make EndDateTime of a record the StartDateTime of next record
Sent: Monday, July 2, 2018 9:25 AM
To: MS_Access_Professionals@yahoogroups.com
Subject: Re: [MS_AccessPros] Query: Make EndDateTime of a record the StartDateTime of next record
Duane,
Here is a simplified version to make it easier to see.
Tables are linked by column product. Minutes are calculated by multiplying Product Table minutes of product times order qty.
Date format I use is mm/dd/yyyy if that makes a difference.
| Current Output | |||||||
| Product | Description | Order | Qty | ProductionDate | Minutes | StartDateTime | EndDateTime |
| P01 | Photo Album | 1 | 5 | 7/3/2018 | 120 | 7/3/2018 6:00 | 7/3/18 8:00 |
| P01 | Photo Album | 2 | 15 | 7/3/2018 | 145 | 7/3/2018 6:00 | 7/3/18 8:25 |
| P01 | Photo Album | 3 | 10 | 7/3/2018 | 36 | 7/3/2018 6:00 | 7/3/18 6:36 |
| Desired Output | |||||||
| Product | Description | Order | Qty | ProductionDate | Minutes | StartDateTime | EndDateTime |
| P01 | Photo Album | 1 | 5 | 7/3/2018 | 120 | 7/3/2018 6:00 | 7/3/18 8:00 |
| P01 | Photo Album | 2 | 15 | 7/3/2018 | 360 | 7/3/2018 8:00 | 7/3/18 14:00 |
| P01 | Photo Album | 3 | 10 | 7/3/2018 | 240 | 7/3/2018 14:00 | 7/3/18 18:00 |
| Table Products | |||||||
| Product | Description | Minutes | |||||
| P01 | Photo Album | 24 | |||||
| Table Orders | |||||||
| Product | Description | Order | Qty | ProductionDate | |||
| P01 | Photo Album | 1 | 5 | 7/3/2018 | |||
| P01 | Photo Album | 2 | 15 | 7/3/2018 | |||
| P01 | Photo Album | 3 | 10 | 7/3/2018 | |||
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Posted by: Duane Hookom <duanehookom@hotmail.com>
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