Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

Using an Access SQL query for two non-related tables based on a date range

Posted on 2014-09-17
4
Medium Priority
?
368 Views
Last Modified: 2014-09-17
Good afternoon, I have an access database that has a query (this could also be a table) consisting of a date field (DueDate).  To keep it simple, the fields are Project (string), Leader (string), DueDate (short date), and Priority (string)

Here are the values that can be put into an Access database to generate a solution for the request I'm intending to make:  Project is considered the primary key and for simplicity it's the name of the project.

Table:  tblProject
Fields:  (in order)  Project, Leader, DueDate, Priority
Values: (in order below to Fields shown above)
HR Metrics, Ed, 9/3/2014, high
GMLOS, Tom, 9/16/2014, high
Monthly Bad Debt, Ed, 9/19/2014, medium
Kronos Time Detail, Jeff, 9/20/2014, medium
Monthly generics, Jeff, 9/17/2014, high
Quarterly denial, Ed, 9/30/2014, medium
ED by facility, Tom, 9/22/2014, critical
Accounting report, Tom 9/26/2014, high
Finance report, Tom 9/24/2014,critical
Weekly task report, Jeff, 9/23/2014, low

I have another table with only 1 record in it:
table: tblDateSelection
ID: 1
TodayDate: 9/17/2014   (primary key)
BeginDateRange:  -2
EndDateRange: 6

Here's what I'm wanting to do...

I want to create a query that takes the tblProject and filter where the DateDue is between #9/17/2014# (-2) AND 9/17/2014 (+6) given from the 1 record in the tblDateSelection table.  In other words Due date is between (-2 days of 9/17/2014) and (6 days added to 9/17/2014)   ----hence it would become----   WHERE DateDue is Between #9/15/2014# AND #9/23/2014#.  I realize that the tblProject and tblDateSelection have no common field; however, maybe there's a way to do this between the two tables that I don't know about.

I'm sure memory values held in VBA code would do something, but would like to see how it can be done directly from a SQL statement directly stored in the Access database (Queries) for other reasons.

I want to use the tblDateSelection because I can change this table values when necesssary.  So with the data above shown for tblProject, I want to pull those records between 9/15 and 9/23 (as indicated in the tblDateSelection (-2 from today - 9/17/2014) and (+6 from today - 9/17/2014)


Thank you,
0
Comment
Question by:HRISTeam
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 48

Accepted Solution

by:
Dale Fye earned 2000 total points
ID: 40328907
Try:

SELECT P.* FROM tblProject as P,  tblDateSelection as DS
WHERE P.DueDate >= DateAdd("d", DS.BeginDateRange, DS.TodayDate)
AND P.DueDate <= DateAdd("d", DS.EndDateRange, DS.TodayDate)
0
 
LVL 1

Author Closing Comment

by:HRISTeam
ID: 40328926
Thanks!  Works perfectly.  Wonderful!
0
 
LVL 48

Expert Comment

by:Dale Fye
ID: 40328940
As long as the 2nd table only contains one record, that won't be a problem.  If you start adding records to the 2nd table, you will need to add a field from that table to the query set, something like:

SELECT DS.TodayDate as WeekOf, P.* FROM tblProject as P,  tblDateSelection as DS
WHERE P.DueDate >= DateAdd("d", DS.BeginDateRange, DS.TodayDate)
AND P.DueDate <= DateAdd("d", DS.EndDateRange, DS.TodayDate)
0
 
LVL 1

Author Comment

by:HRISTeam
ID: 40328967
Thanks, that makes sense if something ever occurs like that.  Simply put, it would be only one updateable record in that tblDateSelection table.  For anyone viewing this in the future --- this works great if you want to have a "master" one record value holder.  In my case, I would update the record daily when the database opens (update the field TodayDate with Now() date and use the -2 to 6 range again.  BTW, this -2 to 6 is not "set in stone" which means it can change and I would change it in that ONE record in the tblDateSelection table.
0

Featured Post

Enterprise Mobility and BYOD For Dummies

Like “For Dummies” books, you can read this in whatever order you choose and learn about mobility and BYOD; and how to put a competitive mobile infrastructure in place. Developed for SMBs and large enterprises alike, you will find helpful use cases, planning, and implementation.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

You need to know the location of the Office templates folder, so that when you create new templates, they are saved to that location, and thus are available for selection when creating new documents.  The steps to find the Templates folder path are …
Instead of error trapping or hard-coding for non-updateable fields when using QODBC, let VBA automatically disable them when forms open. This way, users can view but not change the data. Part 1 explained how to use schema tables to do this. Part 2 h…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

721 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question