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
Solved

DCount syntax with inner join

Posted on 2013-11-13
3
1,537 Views
1 Endorsement
Last Modified: 2013-11-13
I have the following working in a listbox's rowsource, I would like to modify to a DCount.

SELECT Count(*) AS CountOfDOS FROM TPatient LEFT JOIN TClaim ON TPatient.ID=TClaim.ID WHERE TPatient.ID=Forms!FPatientEntryQuery!ID And TClaim.ActiveClaim=True And [DOS]<DateAdd("d",-60,Date());

I am having issues with the quotes.  Can a Dcount be performed as this?  If so what would the proper syntax be?
1
Comment
Question by:thandel
3 Comments
 
LVL 24

Accepted Solution

by:
chaau earned 500 total points
ID: 39647043
You will need to create a query that joins TPatient and TClaim.

1. Create a query with this SQL syntax. Call it QPatientClaims:
SELECT TPatient.ID AS PatientID, TClaim.ActiveClaim, [DOS] FROM TPatient LEFT JOIN TClaim ON TPatient.ID=TClaim.ID;

Open in new window


2. Your DCount syntax will be:
DCount("*", "QPatientClaims", "PatientID=" & CStr(Forms!FPatientEntryQuery!ID) & " And ActiveClaim=True And [DOS]<DateAdd(""d"",-60,Date())")

Open in new window

0
 

Author Closing Comment

by:thandel
ID: 39647058
Thank you.
0
 
LVL 29

Expert Comment

by:IrogSinta
ID: 39647069
An alternative to DCount:

Dim iCnt as integer

iCnt = CurrentDb.OpenRecordset("SELECT Count(*) AS CountOfDOS FROM TPatient LEFT JOIN TClaim ON TPatient.ID=TClaim.ID WHERE TPatient.ID=Forms!FPatientEntryQuery!ID And TClaim.ActiveClaim=True And [DOS]<DateAdd('d',-60,Date())").Field(0)
Msgbox iCnt

Open in new window

Or you could use the specify the rowsource of your control (although it seems unusual that that your listbox rowsource only returns a single row showing the count).
iCnt = CurrentDb.OpenRecordset(Me.Listbox.Rowsource).Field(0)

Open in new window


Ron
0

Featured Post

U.S. Department of Agriculture and Acronis Access

With the new era of mobile computing, smartphones and tablets, wireless communications and cloud services, the USDA sought to take advantage of a mobilized workforce and the blurring lines between personal and corporate computing resources.

Question has a verified solution.

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

A simple tool to export all objects of two Access files as text and compare it with Meld, a free diff tool.
Preparing an email is something we should all take special care with – especially when the email is for somebody you may not know very well. The pressures of everyday working life stacked with a hectic office environment can make this a real challen…
Familiarize people with the process of retrieving data from SQL Server using an Access pass-thru query. Microsoft Access is a very powerful client/server development tool. One of the ways that you can retrieve data from a SQL Server is by using a pa…
Using Microsoft Access, learn some simple rules for how to construct tables in a relational database. Split up all multi-value fields into single values: Split up fields that belong to other things into separate tables: Make sure that all record…

856 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