Query - Records Within A Certain Range

Aug 14, 2006

Hello,

I've been wrestling with this problem for a while now and any assistance would be greatly appreciated.

I have a single table containing flight data. Each record represents a single flight. What I'm attempting to do is count of pairs of flights that come within a certain range of each other. For simplicity sake, let's say that any flights A and flights B passing through Point X within a certain window of time (-15/+15 minutes) of each other are counted as a pair. Each record has a unique numeric key and all the neccessary information. Getting a table of all the possible matches is easy. The tricky part however, is that I only want to count each pair once. Is there any way this can be done with an SQL query?

I apologize in advance if this isn't specific enough. I would really appreciate any feedback whatsoever.

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Queries :: Date Range Query And Null Records

Mar 5, 2014

I have two questions, both the same query.

I need a date prompt and null records in the same line of criteria so I get all those within a certain date range under the field "CO_resp_rcvd" and those that didn't respond yet but need to -- is that possible to do both and if so how would you show me how?

This is what I have currently in my query

CO_resp_rcvd (date field)

Criteria: Between [Start Date] And [End Date]

(I need null values as well because there will be some if the CO has not responded yet but needs to)

Formula:

This formula gives me the number of bus days from the Review Date - CO_Resp_Rcvd Date and that works but if the CO-Resp-Rcvd date is null, I need it to calculate Review Date - Today's date to show the number of days outstanding for those that have not responded yet in the same formula?

Not sure how to combine it to work - the wrapper is a bus day function

This is what I have so far in the query

CO-Bus Days to Respond: Wrapper([Review Date],[CO_resp_recd]) but if CO_resp_recd is null then ([Review Date],Date())

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Oct 15, 2013

First, I am trying to get a query to return records between a certain date range. In the form I have DateFrom and DateTo unbound text boxes from which faculty select the date range. I know I have done this before, but I cant figure out how to create a field name and write the criteria for the source query in design mode!

I tried [Form]![FormName]![DateFrom]<[Form]![FormName]![DateTo] in the criteria but I can't seem to write a valid field name that doesn't alter the criteria in some way...

Second, in the same form, faculty enter the StudentID for the student they wish to get records for. How do I write the code to show a msgbox when there is no such ID in the event they enter an StudentID incorrectly.

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Feb 20, 2013

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When the criteria is set to either "Is Not Null" or a date range (which is all I need), it does not return the complete set of records based on the data that fits the criteria in the main table?

Could there be some sort of join preventing all records from being returned?

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I have tried

Code:
Between [StartDate:] And [EndDate:]

And

Code:
Between [StartDate:] & "00:00" And [EndDate:] & "23:59"

Neither of which work ....

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Cheers

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PARAMETERS [Forms]![frmReport]![cboMonth] Short, [Forms]![frmReport]![txtYear] Long;
SELECT UsageID, dtUsage, dblUsage
FROM tblUsage
WHERE (((DateDiff("m",[dtUsage],DateSerial([Forms]![frmReport]![txtYear],[Forms]![frmReport]![cboMonth],1))) Between 0 And 11));

I also have a query that pulls data between two dates that the user specifies using two textboxes on a form.

SELECT UsageID, dtUsage, dblUsage
FROM tblUsage
WHERE (((tblUsage.dtUsage) Between [Forms]![frmReport]![txtStartDate] And [Forms]![frmReport]![txtEndDate]));

On the form I have an Option Group control that sets the visible properties of the 4 controls;
12-Month Rolling
cboMonth - Month Combobox
txtYear - User entered year
Date Range
txtStartDate - User entered Start Date
txtEndDate - User entered End Date

What I was planning on doing was adding two new textboxes (txtQryStart & txtQryEnd) and depending on what option is selected, change the dates accordingly

blnDateRange = (Me.optDate = 1)
blnMonth = (Me.optDate = 2)

If blnDateRange Then
Me.txtQryStart = Me.txtStartDate
Me.txtQryEnd = Me.txtEndDate
End If

If blnMonth Then
If Me.cboMonth = 12 Then
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EndYear = Me.txtYear + 1
StartMonth = EndMonth
StartYear = Me.txtYear
Else
EndMonth = Me.cboMonth + 1
EndYear = Me.txtYear
StartMonth = EndMonth + 1
StartYear = Me.txtYear - 1
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Now I can use one query to accomplish both types of query;
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FROM tblUsage
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This approach works. It saves me from having to duplicate the queries and some future headache if anything needs to be changed in the queries.

What I was wondering is there an better/simpler way to do this?
:confused:

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Code:
Private Sub Command16_Click()
Dim Task As String
Dim startDate As Date
Dim endDate As Date
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endDate = Me.Text14

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Code:
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Code:
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[code]....

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