Modules & VBA :: DCount On Two Fields
Jul 14, 2014
I need to check the combination of a text box and a combo box that are bound to the same table for duplicates and then give a message box telling of the existing records. The 2 fields are set up as a compound index so access displays a generic message but I am trying to customize the message without doing it through error trapping (because I want it earlier in the processes on the form).
I am trying to us Dcount as follows but this is not working. It seems to be checking for either rather than a combination of the 2 fields because I get my message if either the Description OR the Group is duplicated (both of the text box and the combo box can have duplicates and it is only the combination that is singular) .
If DCount("[Description]", "[ItemTBL]", "[Description] = '" & Description & "'")
And DCount("[Group]", "[ItemTBL]", "[Group] = '" & Group & "'") > 0 Then
MsgBox "This Item is already in the database.", vbExclamation, "Already in Database"
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Apr 15, 2014
I am having an issue using DCount to validate against 3 fields within my database. I have a booking form which contains a Staff member, viewing slot, and Viewing Date which is used to book property viewings.
I want the form to check that the booking doesn't already exist when the process booking button is pressed.
I am using the following statement:
Code:
If DCount("*", "Viewing", "[Staff_ID]=" & Me.[Staff_ID] & " AND [Viewing_Period] = " & Me.Viewing_Period & "' AND Viewing_Date = '" & Me.Viewing_Date) & "'" > 0 Then
MsgBox "Cannot book, booking already exists", vbCritical
End If
I always get the error "Syntax Error (Missing Operator)".
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Jan 3, 2005
Good day:
Code:
=DCount("[DEPARTMENT]","[Query1]","[DEPARTMENT]='ENGINEERING'
I have a query with these fields: DIVISION, DEPARTMENT.
The DIVISION fields are populated with undergrad or grad. The DEPARTMENT fields are populated with ENGINEERING.
I wish to count the occurances of undergrad engineering and count the occurances of grad engineering and return the values in separate text boxes.
Any ideas on how to count occurances of TWO fields?
Thanking in advance.
Dee
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Apr 19, 2014
With a form with two fields one is a date field formatted as short date and the other is a lookup combo box that I use to lookup predefined times and is formatted as short time. The date and time are stored in the same table as date/time in separate fields. I attempted to use Dcount, and get syntax error missing operator. Below is one of a hundred that i have tried after scouring this forum and the net. I ended up converting the Appt_Time field to a text field in the table to eliminate one date field but still got no where.
Code:
Private Sub Appt_Time_BeforeUpdate(Cancel As Integer)
'Check table for duplicate
If DCount("[Appt_Time]", "tblexams", "Appt_Time= & Appt_Time & And [Sch_Date] = #" & Sch_Date & "#") > 0 Then
'Message box warning of duplication
[Code] ....
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Jul 11, 2015
Im a relative novice with access VBA, and I'm really struggling with using Dcount with date variable. All I want to do is count if a certain date appears in a table. Here is the extract from my code:
Dim WorkoutDate as Date
Dim datecount as integer
datecount = DCount("[WorkOut Date]", "tblworkoutlogs", "[workout date]= " & WorkoutDate)
Whatever dates are in tblworkoutlogs, datecount is still = 0...I've trawled the net and tried many variations of the code but no success!if I change all the date formats to strings in the code and the tables, it works so I know i'm looking in the correct place.
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Jun 8, 2015
Upgraded from Access 2003 to Access 2010. My DCount query was working fine in Access 2003 for many years but now I am having issues. Everything is written in VBA.
Routine:
1.) Insert records into table tblEmployee
2.) Query table tblEmployee to count how many employees are in each department using DCount.
Issue:
DCount returns 0 for all Departments.
Findings:
If I manually open table tblEmployee and edit an employees department (I actually named it the same department), DCount will then find 1 person in that department (the record I manually edited). It seems a manually edited record will be counted but anything written by the insert query is ignored.
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Jun 18, 2015
I have a tblManualRewardIncident in there I have 3 fields I want to have my staff in put these rewards via a frmRewardIncidentEntry However im concerned over another staff member in putting the same data so I want the form to highlight on update that a duplicate is there already so cancel the data entry.
The 3 fields that need to check and match are StrataID , DateOfIncident , EndDateOfIncident these are all in the tblManualRewardIncident and appear as buttons in the form frmRewardIncidentEntry the buttons are as follows
cboStrataID , txtDateOfIncident , txtEndDateOfIncident
I want the VBA to run when I CLICK another button on same form cboSQCDP..All 3 fields must match exactly to flag a issue.
StrataID , DateOfIncident , EndDateOfIncident from tblManualRewardIncident
If it doesn't find a match continue and add the inputs in these boxes to the table if it finds a match flag a message and delete the data from the form.
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Sep 24, 2013
In my database when an item is currently being loaned the item's loaned field will have a 1 to indicate this. When the item is returned the value is 0. Only so many items are available and when I use the DCount function it is counting the 0s as 1s.
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Mar 6, 2015
I'm trying reference a dcount on two fields, one is a string and works fine, the other is on a date which does not.
I've investigated the problem and found a couple of references to making sure I use a # symbol to reference the date but I think the thing that's throwing the comparison out is that the date field stores time as well, even if you can't see it?
Code:
MsgBox DCount("*", "[healthcheck]", "[check_date]=#" & Format([Forms]![MAINTENANCE_FRM]![MAINTENANCE_DETAIL_TBL subform].[Form]![FIRST_HEALTH]) & "#")
I thought should count the records in the healthcheck table that match the check_date field against the first_health field on the current form, but I keep getting a 0 count even though the dates seem to match.
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Sep 11, 2013
My DCount statement is not finding a record that I know is there.
Code:
Private Sub Transfer_WN_Books_Click()
Dim ST As String
ST = "H"
If DCount("*", "Books", Author = " & Me!AuthorID & " And StatFlag = " & ST & ") > 0 Then
DoCmd.Beep
End If
End Sub
It never beeps!
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Feb 3, 2014
I can't get the following DCOUNT working for the life of me: DCount("EmployeeName", "tblAttendance", "EmployeeName = '" & cboEmployee Name. Value & "'" And "AttendanceDate = #" & txtAttendanceDate.Value & "#")I have checked this forum along with Google and there seems to be no easy way to do this? I have tried editing the syntax over and over again. I have been able to run a query and get the desired result in that query; however I am unable to call that result in VBA.
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Jun 19, 2013
Mycode works great when I use the DCount function, but fails when I change it to DSum which errors with: Error 94 - invalid use of null.
dblCntr = DSum("[intEventCount]", "tblResourceEvents", "[ResourceEventTypeID] = " & myKey & " AND [TimeFrameID] = " & Me.cbo1)
The entire table has valid data - no nulls. myKey and Me.cbo1 both have correct values.
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Jan 21, 2014
I have having an issue with determining how to use a customized fiscal year with a DCount function.
My Code:
ThisYear: DCount("*","Open Issues","year([RequestDate]) = " & Year(DateAdd("y",-1,Date())))
The code only does from Jan 1, YYYY TO Dec 31, YYYY
I'd like the code to read from Oct 1, YYYY TO Sept 30, YYYY
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Jun 15, 2014
If expression to determine if a duplicate records has been entered.
DateAte is a date
MealType is a list box (text)
All I want to do is prevent two lunches, etc. from being entered on the same date. Code that results in the message box every time, regardless if a duplicate record or not.
Private Sub MealType_AfterUpdate()
Dim strDA As String
Dim DA As Date
DA = Me.DateAte.Value
strDA = "[DateAte]=" & "#" & DA & "#"
If DCount("[MealType]", "tblmeals", strDA) > 1 Then
[code]....
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Jul 17, 2014
I am trying to check if a record exists, but I keep getting a error!!!
Private Sub Command10_Click()
If DCount("*", "tbl", "[ID] = "") <> 0 Then
MsgBox "This record already exists.
Else
stDocName1 = "McrAddNewRecord"
DoCmd.RunMacro stDocName1
End If
End Sub
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Oct 15, 2013
I am trying to put in a control measure which won't allow the user to accidentally add a client to areferral more than once. The simplified relationship structure reads:
tblClient 1-------n tblClientReferral n---------1 tblReferral
I am as a far as using a dlookup which correctly gives the error message, but only if it is the first client added to the tblClientReferral table. If the hypothetical situation arises in which the user adds a client, then adds a second client to the referral and accidentally adds the second clientn twice, the Dlookup is not picking this up.
I suppose the solution is using a dlookup which has the criteria saying if the referralID = 'this' AND the clientID = 'this' Then 'do this'. But as far as I am aware you cannt use AND in the criteria?? atleast, it hasn't worked when I tried. A snippet of the vba code used is below:
Dim objClient As Object
Set objClient = Forms![frmAddClient]![cboClientID]
If (DLookup("clientID", "tblClientReferral", _
"referralID = Forms![frmReferral]![referralID]")) = objClient Then
MsgBox "Client already added"
GoTo ExitSub
Else
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Oct 9, 2014
I am getting something wrong but I don't know what - date related.
Take this code for example:
Code:
Dim varDate
varDate = Date
If DCount("RunningNumber", "AllocatedVehicles", "ServiceDate=" & varDate) > 0 Then
MsgBox "Go Away", vbOKOnly
Else
Go on and do the real work
End If
End Sub
The DCount line is being completely ignored, no error message, it just cracks on as though there were no records found (but they are definitely there!) I have tried:
Code:
Dim varDate
varDate = Date
If DCount("RunningNumber", "AllocatedVehicles", "ServiceDate='" & varDate & "'") > 0 Then
MsgBox "Go Away", vbOKOnly
But that throws up a Type Mismatch (which is what I would expect). Then I tried
Code:
Dim varDate
varDate = Date
If DCount("RunningNumber", "AllocatedVehicles", "ServiceDate=#" & varDate & "#") > 0 Then
MsgBox "Go Away", vbOKOnly
And it gets ignored again.
I am having similar trouble trying to open another form using the same field as the open argument, and getting similar results, so it is clearly me that is wrong.
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Apr 14, 2014
I created a query in Query Builder which contains a DCount with multiple parameters and it runs as it should. I am trying to convert it to VBA, but my inability to put in the quotations marks correctly is frustrating me terribly.
Here is the SQL version from Query Builder:
UPDATE [Daily Status Update Table] SET [Daily Status Update Table].NumberOfChases = DCount("[ChaseOtherID5]","[Chases_View_ALL - TX_Mbr 9 Digit]","[ChaseOtherID5] = 'U - Initial Contact' AND [ChaseStatus] = 'A'"), [Daily Status Update Table].ChaseStatus = "A", [Daily Status Update Table].NewStatus = "A", [Daily Status Update Table].ChaseAssignment2 = "Unscheduled"
WHERE ((([Daily Status Update Table].ChaseOtherID5)="U - Initial Contact"));
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Jul 19, 2015
The following code is giving me a "Run-Time error '13' Type mismatch. I have tried isolating both criteria and they seem to be fine but joined together with "AND" they error. Workdate is a Shortdate. Flightnumber and flightID are numbers. FlightID source is a cmb within my form.
Private Sub FlightID_BeforeUpdate(Cancel As Integer)
If DCount("[WorkDate]", "Main_tbl", "[WorkDate]= #" & Me.WorkDate & "#" And "[FlightNumber] =" & Me.FlightID.Column(0)) > 0 Then
Do this....
End If
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Sep 10, 2013
It is basically a DCount, and it should find records, but returns 0 all the time. My code is:
Code:
Function cntkit(sftd As Date, sftn As String, typid As Integer, specpaint As Boolean) As Integer 'Counts jobs kitted during shift given by sftd and sftn
Dim timeformat As String
timeformat = "#mm/dd/yyyy hh:nn:ss#" 'need this, to convert it to US datetime format
cntkit = DCount("[JOB]", "Archive", "[Type] =" & typid & " And [Autfinish]=False And [SpecPaint] =" & specpaint & " And ([Kit] BETWEEN " & Format(sftstart(sftd, sftn), timeformat) & " AND " & Format(sftstart(sftd, sftn), timeformat) & ")")
End Function
sftstart and sftend are functions which are returning dates. The funcion works fine if I omit the Between part of the criteria. So the problem is in that part.
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Dec 3, 2013
I ahve declared custCount as an integer and id as a string that comes from the user form (id = me.CustID) and trying to count the number of matching records in the recordset (rst) using the following:
custCount = DCount("[customerId]", rst, "[customerId] like '" & id & "'")
I'm getting a type mismatch error on the DCount statement?
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Jul 9, 2013
I have a main form called "frmMain" and on it I have a text control named "txtBoatStatus". The control source for txtBoatStatus is determined by code that I have in the Form_Current event. The code is as follows:
(begin code sample)
Dim BoatStatus as Variant
BoatStatus = DCount("[BoatComplete]", "tblBoatOrders", "[BoatComplete] = -1 And [OrderPresent] = -1")
txtBoatStatus.Value = "There are " & BoatStatus & " boat orders that are complete."
(end code sample)
Now when I first open the frmMain everything works great and the control will say, "There are 5 boat orders that are complete." Perfect. However, In the instance if I open the form with my Boat Orders and mark off another order as complete (bringing my total to 6), the txtBoatStatus does not update when I reopen frmMain. It will only update and show, "There are 6 boat orders that are complete." if I manually hit SHIFT+F9.
How can I do this automatically? I've tried various things such adding "Me.Recalc" or "Me.Requery" to differnt events, controls, etc. but I still cant get it to show the updated number automatically. How can I get it to update without SHIFT+F9?
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Sep 23, 2014
I have a question concerning the automatically sequential numbering of a primary key as part of a composite primary key.
Tbl_treatment:
ID=numeric field (also in tbl_pt and in tbl_tumor)
Tumornr=numeric field (also in tbl_tumor)
Treatmentnr=numeric field
[ID] and [tumornr] are fixed and i would like to automatically number [treatmentnr] per [ID] AND [tumornr] in a way that the output will look like this:
1001 1 1
1001 1 2
1001 1 3
1001 2 1
1001 2 2
1001 3 1, etcetera.
However, when i use the SQL-formula below my output looks like this. It seems as if the function is not properly taking the composite primary key of [ID] AND [tumornr] into account or not finding the true max value:
1001 1 1
1001 1 2
1001 1 3
1001 2 2
1001 2 3
1001 3 3, etcetera.
If (DCount("[treatmentnr]", "Tbl_treatment", "[ID] = " & Me.ID & "" & "AND [tumornr] = " & Me.tumornr & "")) = 0 Then Me.treatmentnr = fRowNum(False)
Else Me.treatmentnr = (DMax("[treatmentnr]", "Tbl_treatment", "[ID] = " & Me.ID & "" & "AND [tumornr] = " & Me.tumornr & "")) + 1
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Apr 13, 2015
I have the following code with dcount
If DCount("Username", "[tbl_userinformation]", "[Username] = " & Me![Text146] & " AND [actualdate]=" & Me![Text148] & " ") > 0 Then
but i have the following error ...
runtime erro 3075: syntax error in number in query expression '[username]=f15691b and [actualdate]=13.04.2015'
f15691b and 13.04.2015 are the values those i entered.
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Aug 27, 2013
I have a database that will register the emails coming in and what time, also the time, date out and person.
I have a form with the fields to be filled in and a submit button. There are some fields that are automatically filled in and others need manually fill in.
below that part is a sheet (subform in the form of sheet) that should be filled in with the above data. Once it is there, it should empty the fields so they are ready to be filled in again. If I fill new data and press the submit button, it should go to the next available row.
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May 29, 2015
I am working on MS Access program where i import data from Excel and i would like to generate a report in MS Access where the fields are empty. Like the MS Access generate a table of errors when we import data and shows information like field name and row number along with Type Conversion label. Can i generate similar table from an MS Access table where fields are null.
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