Tables :: Date / Time Fields In Table - Subtract To Get Total

Oct 31, 2012

Any way of setting up a table containing the following date/time fields.

StartDate
StartTime
EndDate
EndTime

Ultimately I will need to be able to subtract these date/times to get a total time between the two. Should I combine the start date and times in one cell or keep them separate.

In either scenerio, how do I subtract the two in a query for a report?

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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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Feb 21, 2013

I have created a table with four fields. The names are:1stBusOn, 1stBusOff, 2ndBusOn, 2ndBusOff.

I want the time for the first two fields and the time for the second two fields to end up in a field called TotalRideTime.

Also, if only one set of the fields are completed I still want that total time to in up in the the TotalRideTime field.

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Oct 29, 2011

I have a DateAndTime field in table. This field is about a due date. I want if today is a due date relevant one of the dates ms access alarm me.

Like reminder software I want entry date and alarm me in relevant day. How can I do this?

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Nov 7, 2006

Here's a sticky one? (maybe...) I have a number of aggregate totals from several queries all linked to the Input Query and all Nz'd as 0's

From the image enclosed the totaling text box (top right left) is calculating the value in the properties box. The value should be 3.52 + 5 - 8 = 0.52 the value showing is -4.475 (which is 3.52 - 8) so I see it's ignoring the 5 value but I can't see why.

The ACDays and ALDays values are both generated by the same module, but with different Leave types. and as I mentioned previously all Nz 0'd

Any thoughts appreciated, I'm baffled:confused:

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Mar 13, 2014

I have a database with date and time each stored in a separate field. Now I want to query the database based on a start date/time and an end date/time. I started with the code below but it only returns events within the same time range on each day when what I really need is every event from a specified date and time through a specified date and time.

SELECT myTable.ID AS myTable_ID, myDate, myTime, FirstName, LastName
FROM Staff INNER JOIN myTable ON
Staff.ID = myTable.StaffID
WHERE myTable.myDate >= #3/2/2014#
AND myTable.myDate <= #3/3/2014#
AND myTable.myTime >= #8:00PM#
AND myTable.myTime <= #11:00PM#
ORDER BY myDate desc

In the above example what I want is every event from 3/2/2014 8:00PM until 3/3/2014 11:00PM. But what I get instead is every event between 8:00PM and 11:00PM on 3/2/2014 and every event between 8:00PM and 11:00PM on 3/3/2014.

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Sep 23, 2013

I have a simple and small database having only one table. I want the data table to be exported in a spreadsheet format automatically at the end of the month. Is there any code or function to do that?

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Apr 23, 2013

I am using calculated field as a data type in access 2010.

They are working fine.

However, I added a new field and now the final calc won't work.

I have Subtotal adding loads of fields together. Works fine.

Then I have a VATunit field which is a double integer, so enter 20 and my next field is VATTotal calculates the SubTotal + the VATunit by doing (Subtotal/100)*VATunit. This calculation is fine and gives me the correct amount.

The next field is a Total field. Which adds Subtotal and the VATTotal together. Howver, the Total is the same as Subtotal. It is not adding the VATTotal to it?

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Apr 22, 2015

I have a product table that includes the name of the product, the quantity ordered, and the unit price. This is a summary table for the whole year showing all of the orders. The Primary Key is [ID] from the [tblOrders] table. I attached a screen shot of my query. I don't know if you can see it. I want to generate a report where each product is listed once, the unit price for that product is listed, the total number of that item that was ordered throughout the year, and finally, the total amount spent for each item during the year.

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Subtract TIME From DATETIME

Mar 7, 2008

I'm sure this is simple but my brain is mushy this morning!

I have two datetime fields ADMISSION and DISCHARGE with values such as 03/02/2008 15:00. How do I convert these to dates only? I don't want to just *format* them as dates, which I can do. In this example I would want to convert that date to 03/02/2008 (or 03/02/2008 00:00)

It's an idiosyncrasy of the way the NHS calculates hospital length of stay. Our previous IT system had dates and times in separate fields so I could just ignore the time field and work out length of stay based on dates only. However, our new system returns a combined datetime.

Patient A 03/02/2008 00:15 to 03/02/2008 23:45 = 0 days
but
Patient B 03/02/2008 23:45 to 04/02/2008 00:15 = 1 day

Basically, you count a day if there's a date change, even if that was only half an hour (or even a few minutes) either side of midnight, but you DON'T count a day if there was no date change, even if that was almost 24 hours.

So formatting them as dd/mm/yyyy wont work ,as I will still have partial days when I subtract one from the other and INT([DISCHARGE]-[ADMISSION]) wont always work either as it would calculate 0 for patient B.

Help!

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Aug 5, 2013

i would like to sum up 5 fields and save (or just show it in the form view is enough really) in a seperate field, i have managed to sum the 5 fields, but it summed up all 5 fields in all records, i'd like to have my form show the sum for the record, not the table.

it would be ideal that it would refresh when one of the 5 fields data changes, i.e from 1000 to 2000. again updating in the form view is what is needed.

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Jan 29, 2014

I have a simple table named [Groups] containing a Primary key ID, a Group name, a Group Leaders name and a date field. The date field merely lists the date of a particular Group related occurrence.

I need to know how many records have dates entered and assumed a simple total would achieve this. The Total is correctly shown in the appropriate row but most, but not all, of the date records are converted to show the same 'total' number.eg the date 28/01/2014 is changed to !4. Quite a weird occurrence.

Is it the case that date records cannot be totaled, in which case, why not all?

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Sep 16, 2014

Table 1 has all the items I am trying to sell with sell by date after which I cannot sell this item. Then in Table 2 I have forecasted sales. So now I am trying to calculate stock consumption to see if I will be left with any stock that I cannot sell.

So now somehow I need to deduct sales forecast from my stock holding but it needs to go by date i.e. consume all stock for Item 1 with date 16/09 before moving to Item 1 with sale by date 23/09.

So based on the attached example, I can see that on 16/09 I will consume only 5 cases from sell by date 16/09 and another sale is 18/09. So that would give me information that I will be left with 95 items dated 16/09, which I cannot sell because they will be out of date.

I would like also to include the logic that if Item is out of date it would move to the next sell by date.

So in this case sale of Item 1 forecasted for 18/09 (94) would consume the whole stock (50) with date 23/09 and another 44 from date 01/10.

For Item 2 I can see that units with Sell by date 30/09 will be consumed on 25/09 and I will start taking stock from next sell by date which is 14/10.

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Sep 5, 2014

I have the following source data:

Code:
Item Revision Start End
332 B 9/2/11 9/15/11
332 C 9/21/11 9/22/11
332 E 11/2/12 11/29/12
2A9 A 1/13/13 1/14/13
2A9 C 1/16/13 1/18/13

I'm trying to make a select query to provide the following output (RevisionStart-PreviousRevisionEnd):

Code:
Item Revision Span
332 C 6
332 E 407
2A9 C 2

I've struck out with union queries and aggregating/sorting letters and don't know where else to look. Is there a specific name for this type of operation anyway?

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Aug 22, 2012

I have a database consisting of two tables. One is "articles" and the other is "tasks". To put it simply, I would like to find how much time the article spends in tasks, but one article can have many tasks, and they often (but not always) overlap. Tasks have a start and end date field.

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Jun 12, 2006

I'm working with a linked table that has a seperate field for the date, and a seperate field for the time (which show in the linked table as '11/30/1899 9:46:00 AM'). I need to calculate the time difference between 2 entries.

How can I merge the 2 fields into a combined date/time field for my calculations?

Thanks,

Sup

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Feb 22, 2013

Access 2010 ... I have 2 tables. One with base information second one is linked with multiple results each having a price. On table one i see the + sign when i click i can see the linked second table. Can i get a total amount of the price on table 2 on table one?

IE:
Table 1:
Trans ID - Seller - Quantity - Lot Cost - Parts Cost<-- the one i need total for.
123 - joe - 3 - $100 - $20 <-- the total of the 2 linked parts (Keyboard, Mouse)

Table 2:
ID - Trans ID - Part - Cost
1 - 123 - Keyboard - $10
2 - 123 - Mouse - $10

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Jul 14, 2014

I have a table contains
1. full name
2. email
3. date

I want to make a query that will contain
1. full name
2. email
3. date1
4. date2

The date2 will be date1 + 90 days

So if the result is a sunday i want to add one day or subtract one day automatically...

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Mar 25, 2015

My [datefield1] is formatted as dd/mm/yyyy

I wish to create a query that produces a return of the previous month and year. i.e.

25/03/2015 (though a query formula) becomes Feb-15
01/01/2000 would return DEC-99
etc

This way I can then link all of my February data (formatted "mmm-yy" to my [datefield1]

I have tried subtracting day and formatting to months and subtracting then the value of a month but it all becomes too complicated because of the different days in the months and Jan to Dec and year as well.

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Aug 10, 2005

I am creating a query with criteria for a dates column. The column cotaining dates in my Table has many empty fields. I want to limit the criteria for my dates to >#1/1/2004#, but I don't want Access to exclude all the empty fields because I want all the data displayed for the purposes of my report.

What do I do? I'm not terribly familiar with Access, so please explain as completely as possible. Thanks in advance!

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Sep 15, 2006

Hi,

I'm combining two date/time fields in a query to an integer. The first field has the date, the second the time. I'd like the resulting integer to be without the opening 0. How can I do that?

That is, these are the two fields:
2006-09-14 (date/time)
15:00:20 (date/time)

And I'd like those two combined to be 60914150020 (integer) in the third field in the query.

Grateful for advice!

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Apr 15, 2008

I have a table in which each record includes a field showing the time that an event started and then another field which stores "how long did it take", these two fields are both defined as a short Time. I then have a query that runs through the "how long did it take" fields to produce an average time for the whole sequence of events. Two problems:

1. The average comes out as a decimal like 39553.367942 instead of several hours and minutes.

2. When I try to access this value using DLookup on a form I get "#error"

Any suggestions?

thanks

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Oct 11, 2006

Hi,

Im having a problem adding the date and time to a new record using a form. The 1st method i used was by inserting the default value set to Date() & Time() functions, this worked fine for over a year, but now on some computers on the network the following error pops up "function is not available in expressions in table-level validation expression".

The 2nd method I tried was to add a macro with 'setvalue' commands to the After Update event of one of the first field's that was entered, this entered the same information into the Time & Date field once the first field was updated. This now brings up the macro fault screen and the 'Halt' button has to be pressed to clear the error.

This only happens on the older computers that access the database, the new computers don't bring up any errors.

Can anyone help me with this problem??!

PTDAccess

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Apr 13, 2005

I created a Contact database where I have the date and time as two separate fields in one of the tables. I have them defined as such, but would prefer that the fields wait until I enter data into them and not auto fill with the current information. Is there a property of these fields I can set so that these fields do not get auto filled? Again this database is too large to send, so I hope that you can help without it.

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Mar 12, 2014

I have a form with Date of Death (DOD) field. I would like update DOD from a table dbo_patient into Z_Patients table.

I have set the datatype as Date/Time in the form for Date of Death.

Code:
Private Sub Update_DOD()
Dim rcMain As New ADODB.Recordset, rcLocalDOD As New ADODB.Recordset
Dim DOD As String
rcMain.Open "select distinct PatientKey from Z_Patients", CurrentProject.Connection

[Code] ....

However I am getting some error Run-time error '-2147217913 Date type mismatch in criteria expression in section below.

Code:
CurrentProject.Connection.Execute "update Z_MAIN_Processed_Patients set DateOfDeath = '" & rcLocalDOD!date_of_death & "' where PatientKey = " & !PatientKey

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May 21, 2007

For anyone that might be able to help me out, I'd very much appreciate it, as this is now number 2 stupid workaround that I'd like to resolve before I need counselling...;)

I have a Date/Time field that I'm importing into my database via .csv files. The field is setup like the example below in every .csv file:

4/2/2007 8:30:00 AM

Access keeps throwing errors and deleting all the field values in this field whenever I try to import. I know that Access does this when a Date/Time field includes data that is not delimited, but these field values seem to be perfectly formatted to me... what can I do to stop Access from chucking these on import?

Right now I'm just importing the data into a "text" field, and then changing it to "date/time" afterwards, but I'm worried that once the table gets too long I won't be able to re-index all those records anymore and my database will be useless since it depends on that field being "date/time" format...

All those better than I feel free to show me how and where I've been stupid:D

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