Queries :: How A Query Can Calculate Difference Of New Odometer / Last Odometer

Jan 27, 2015

I am designing mileage database in access 2010.

table:
1- maintbl (date, truckNo fillinQty,rate,cost, odometer, mileage)

Query:
1- mainquery (based on maintbl)

Form:
1- mainfrm (Based on mainquery)

i want to calculate mileage :

example:new odometer reading - previous odometer reading / filled in qty
example: 2000 km - 1000 km / 200 liters = 5 liters /km

Objective: How query will automatically calculate the difference of new odometer reading and last odometer reading for a specific truck number and divide it with filled in qty of fuel?

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Queries :: Calculate Time Difference And Show Result Under Certain Criteria In Query

Jul 9, 2013

ID Up Time Down Time
John 18:00 15:00
Kelvin 08:00 08:05
Melisa 23:00 02:00

This is the Table , i need the Query result show IF [Up Time]-[Down Time] is >=3 hrs

Like Below :

ID Up Time Down Time
John 18:00 15:00
Melisa 23:00 02:00

IDUp TimeDown TimeJohn18:0015:00Melisa23:0002:00

I tried DateDiff("h",[Up Time],[Down Time]) in Field but POP out with error "Syntax error (comma) in query expression 'Table1.[DateDiff("h",[Up Time],[Down Time])]' " ...

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Queries :: Database Which Calculate Difference Between Dates

Sep 14, 2014

I have the attached database which calculate the Difference between dates.I have also two problems like i shown in the image

Code:
Option Compare Database
Option Explicit
Sub Recalculate()
Dim rst As DAO.Recordset
Dim dff As Long

[code]...

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Queries :: DateDiff Function - Calculate Difference In Dates Between Two Fields

Apr 22, 2013

I am trying to calculate the difference in dates between two fields. How do I find the difference in days between field one which contains the date 04/12/2011 and field two which contains the date 04/12/2013? I have tried to use the datediff function, but it keeps telling me it doesn't recognize the field name, even though the spellings correct.

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Queries :: Calculate Difference Between Two Date Fields To Get Total Time

Oct 26, 2014

I have to create a query in access that will calculate two Date and time fields [Date & Time Left]/ [Date Returned], need to figure out between the two fields. Trying to identify when the rep returned the call and the number of business hours (6:00am - 4:30pm) it takes to return a message in Ms Access 2010.

The only issue is the calculation has to be done by time and so I have to calculate what time they left the message(so the difference between [Date & Time Left] and [Date Returned) [Date & Time Left] and when the rep returned the message which is suppose to be [Date Returned] but the problem with this field is the data entry is in date format (10/9/2014, 00/00/0000) of Date and not Date and Time like the [Date & Time Left] field, so I don't know what to do now. Not sure what to do now not a database that create or have allot of control over.

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Forms :: Calculate Difference Between Two Query Table Values?

Nov 27, 2014

I am struggling with calculate difference between two query table values, I first created a make a table query(current meter reading) which contains one column called "meter read" , and I created a second make a table query(previous meter reading) which also contains "meter read" column, I linked those two make table queries to calculate the value difference between two date, how can I create a form to calculate diff between any two date?

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DateDiff In A Query - Calculate Time Difference Between Two Columns

Jan 22, 2012

DateDiff in a query

I am trying to calculate time difference between two time columns as follows in a query which has a few inner joins

Diff: DateDiff("h",[Table1.TimeStrat],[Table1.TimeStrat])

This gives problem, it is asking [Table1.TimeStrat] to be entered, where is the problem?

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Calculate Difference Between Values

Jul 17, 2006

How do I calculate the values between two columns and populate a third column with those new values? I have an ''Actual Cost'' column and ''Budget Cost'' column and I would like to create a third column ''Margin.''

Is this something that needs to be done with a query or can it be handeled in the design view of a table? I'm starting to learn that Access works nothing like Excel.

Thank you in advance for any help. I scanned some of the threads in this forum, but many were beyond my comprehension. Any walk-through of this procedure would be much appreciated.

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Calculate Time Difference

Aug 3, 2005

Hello,

I,ve made the following date fields in a form: begintime, endtime. I've also made a field Diff that calculates the difference between the two by the code : Diff = Format([begintime] - 1 - ([endtime], "Short Time").
Bij this code you can calculate the difference even over night.

But now I've got to calculate the part of the time someone worked between midnight and 06:00AM if that person indeed worked in those hours.

e.g. someone started at 16:00 end ended at 03:30. The part of time I need = 3:30
e.g. someone started at 01:00 end ended at 11:00. The part of time I need = 5

How can I accomplish this? I hope someone can help me because I'm :confused:

Thnx Remco

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Calculate Time Difference

Oct 25, 2014

I have to create a query in access that will calculate two Date and time fields [Date & Time Left]/ [Date Returned], need to figure out between the two fields. Trying to identify when the rep returned the call and the number of business hours (6:00am - 4:30pm) it takes to return a message in Ms Access 2010.

Code:
SELECT [Message Tracking_tbl].[Date & Time Left], [Message Tracking_tbl].[Date Returned], [Message Tracking_tbl].ID
FROM [Message Tracking_tbl];

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Forms :: Calculate Difference Between Records

Jul 25, 2014

I have looked all over for a way to calculate the difference between water meeter readings. My brain may be Friday slow, but all I can find is for calculating differences in dates. My water table has 3 fields: ReadDate, Reading, Calc1

ReadDate is the date the water reading occurred
Reading is the meter reading
Calc1 is calculated (when I find out how!) by subtracting the current reading from the previous day's reading.

I would like to add the write script in my form so when the readings are entered, the calculation auto populates the field for the user.

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Need An Elegant Way To Calculate Difference Between Numerical Records.

Nov 1, 2007

I'm new to building databases and I wouldn't think that this is difficult but it has stumped me and everyone that I have approached to elegantly perform this calculation.

Essentially I have a table of meters (the best real world example is the watermeter that your community uses to measure how much water you use each month.) Each meter in the table has a "child table" of the date/time that the meter was read and the reading on the meter (stored as a number). I need to calculate the difference between the last two readings in the child table for each meter(essentially how much water each meter has used since the last reading.)

I have been able to sum, average, etc. the meter readings, but I can't seem to find a way to get a difference.

Thanks in advance,

Corwin

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Calculate Date Difference Excluding Weekends

Apr 25, 2014

I am trying to Calculate the Date difference between "Material Submit Data" and "Current Date" excluding Weekends.

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SQL Expression - Calculate Difference Between Start And End Time

Jun 2, 2015

I'm trying to calculate the difference between start and end time, which works fine with:

Total Time: DateDiff("n",[tblTaskTimes]![StartTime],[tblTaskTimes]![EndTime])

However, this is for a database that calculates billable time in 10th of an hour. So, for example, 1 hours would be 1, 30 minutes would be .5, less than 6 minutes would be .1.

The format for this expression is set up to a general number, if that matters.

It's gotta be something in the formula like multiplying this by 24 (for 24 hours) and then dividing by something. Nothing I'm trying is working.

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Forms :: Calculate Integer Difference Between Due And Result Date

Sep 20, 2014

Trying to calculate the integer difference between Due_Date and Result_Date excluding weekends and holidays.

I have a table (Holidays) with the dates of the holidays in it. The table looks like:

ID Description Holiday
1 New Years 1/1/2014
2 New Years 1/1/2015

So, if Date_Due: 9/25/2014 and Result_Date: 9/29/2014, then TAT = 2

Since 9/27/2014 and 9/28/2014 are weekends they are excluded from the calculation and only that Thursday and Friday are used in the calculation.

Code:
Private Sub Result_Date_AfterUpdate()
[TAT] = NETWORKDAYS(Due_Date, Result_Date, tblHolidays)
End Sub

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Modules & VBA :: Calculate Part Information Difference As Per Date?

Nov 21, 2013

How to implement a functionality into my access database. The related tables required for this functionality can be found as an attachment.

When the information has been entered into the tables by the user, I would like to calculate the difference between the information for each part within the same table. The main columns for which the difference have to be calculated are: [RefObsInfo->RefSources] and [AltObsInfo->StatusAltSource] and [GenObsInfo->GenSources]. The values for these fields are restricted to 3 or 4 different ones. I also would like to show if the GenEstAvailable columns are changed, but that's for later.

In order to calculate this difference a query has to select for each Part the information related to the last date AND a date which has been specified by the user (with the previous date as max). For this the user is asked to give a from date, which she/he can select from a combobox. This combobox has a standard selected value which is the MaxDate-1, i.e. the previous date. The difference should be calculated from the previous date to the last date. I would prefer to give each (predefined) difference a specific action to show the user the difference in a matter of seconds.

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Modules & VBA :: Calculate Integer Number Difference From Two Dates

Sep 20, 2014

Basically, I am trying to calculate a integer number difference from two dates (TAT = Due-Date - Result_Date). The number is calculated and excludes weekends and ideally holidays (for that I have a tblHoliday but not sure how to use it). The function below seems to calculate a number but doesn't exclude weekends.

For example, if Due_Date is 9/26/2014 and Result_Date is 9/30/2014, then TAT is calculated to be 5 (should be 2).Since 9/26/2014 is a Friday only Friday and Monday are used in the calculation.

Code:

Option Compare Database
Public Function WorkingDays(StartDate As Date, EndDate As Date) As Long
Dim intCount As Long
intCount = 0

[code]...

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Jan 30, 2014

I have a subform in which I want to calculate the difference between a start time and finish time, the problem I am having is when the start time is on a different date to the finish time

Start 23:15 on 14th Jan finish 00:015 on 15th Jan, also I want the answer to be the number of minutes. The fields I have are

BatchStartTime Short Time
BatchFinishTime Short Time
BoilTime ([BatchStartTime] - [BatchFinishTime]) General Number.

There are many batches to enter per job and the MainForm has the StartDate as I didn't want to enter the StartDate for each batch.

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Count Work Days - Calculate Difference Between Two Dates

Jun 8, 2015

How can I calculate the difference between two dates but I only want to count the work days? So if was today and I wanted to go until 6/15/2015 the difference would be 5 and not 7 because I do not want to count Saturday or Sunday. Is there a special %datediff function where I would only count work days?

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Queries :: Query Count Difference Of Two Fields?

Jul 20, 2013

i have a access table (AUTH) with following field

Company Auth Held

Tata 12

Dell 11

HP 21

Opera 11

Bangour 10

i used the following query to calculate the Held from a table named pers.

SELECT AUTH.company, AUTH.Auth, Count(AUTH.company) AS Held
FROM pers INNER JOIN AUTH ON pers.company = AUTH.company
GROUP BY AUTH.company,AUTH.Auth

then i got the result as under

Company Auth Held

Tata 12 02

Dell 11 08

HP 21 20

Opera 11 12

Bangour 10 12

now i want the difference between Auth and Held as Sur/Defi

how can be it done.

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Queries :: Calculating Difference Between A Table And Query?

May 2, 2013

I'm trying to make a query where it can calculate the difference between a table field value and a query field value.

Ex. Table INVOICE - fields
invoice no, invoice value,
Query TOTAL - fields
invoice no total invoice value

I need to get the difference between invoice value and total invoice value.

How can I put this into a query (invoice value - total invoice value)?

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Queries :: Query Time Difference AND Monthly Totals

Mar 21, 2013

I am VERY, and I mean VERY new to Access. I've been racking my brain all afternoon and googling like crazy. I just completed two levels of training on Access 2010 and have never worked with the program before. I already set up my tables and now I am on to querying. I have a table with several columns, two of which are "Start Time" and "End Time". I already created a query using the DateDiff function to calculate the time difference for each record. It output a new field with the time difference in hours. Now, I want to sum the totals of the time differences by month and I cannot for the life of me figure it out. My new query has Date (m/dd/yyy) and Hours.

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Jul 3, 2015

I am using Access 2013.I am trying to create a query that will count the days difference between two dates. The dates are in the same field. I want to group by Region.So:

tblRegion = RegionID
tblStatus = StatusDate

I know how to use the DateDiff when it is two different fields, but I can't figure out how to do it from the same field.

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Jul 15, 2014

I have a field that is giving me the number of business days between a period of time and then I want to subtract that number - the person's PTO time to see the actual days they were available...when I simply type the number in (see below) it works great but I want to set up a prompt that will ask me how many PTO Days to calculate as it will be different for each person I am quering...is this possible?

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Queries :: Calculate Percentage In Query

Apr 16, 2013

How to calculate the percentage of kilometers per order compared to the total number of kilometers per carrier.

In the attached screenshot send queries where I need formula.

Mileage on the orders of the field called "Korkma" . The formula should look like: # [Korkm] / [total kilometers per carrier] #.

I do not know how to get the total mileage driven by the carrier (the carrier is in the query in the Field Name Plate) for the month.

For example:

date 1.1.2013.,Plate:Pribus Korkm= 37
date 2.1.2013.,Plate: Pribus,Korkm=56
date 10.1.2013.,Plate: Pribus, Korkm= 70
Formula: [37]/[163] = 0,23
[56]/[163]= 0,34
[70]/[163]= 0,43

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Queries :: How To Calculate Mode Value In Query

Feb 5, 2015

Is there a way to calculate the mode value in a query?

In a summary query, I need to return the value that shows up the greatest number of times in a certain column of a table. Is there a function built in to Access or an easy way to perform this, or do I have to make my own function to handle this?

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