Query Data By Hour
Jul 28, 2006
I have a very large dataset with over 11 million data records in three different databases! Currently the data is collected on average every minute, which is much too detailed! I would like to pull data for every site on the hour, or somewhere near the hour as some data was collected at different time intervals. (this latter part is a completely different issue, I would be happy just to get my first query working, then deal with data not collected exactly on the hour)
I wrote a query and tested it out on a very small portion of the data. It seems to be working, but for some reason won't pull data for the 2 pm, 5 pm, or 8 pm hours...even though the data is there in the table. Any reason why this may be? Even if I simplify the query to only pull out those hours, and not all 24 at once, the data still doesn't get selected. I really can't think of why it's not working. Any suggestions?
I've currently set up the Criteria in the time column of the query to look like this:
#1:00:00 AM# Or #2:00:00 AM# Or #3:00:00 AM# Or #4:00:00 AM# Or #5:00:00 AM# Or #6:00:00 AM# Or #7:00:00 AM# Or #8:00:00 AM# Or #9:00:00 AM# Or #10:00:00 AM# Or #11:00:00 AM# Or #12:00:00 PM# Or #1:00:00 PM# Or #2:00:00 PM# Or #3:00:00 PM# Or #4:00:00 PM# Or #5:00:00 PM# Or #6:00:00 PM# Or #7:00:00 PM# Or #8:00:00 PM# Or #9:00:00 PM# Or #10:00:00 PM# Or #11:00:00 PM# Or #12:00:00 AM#
Is there a better way to go about this?
Thanks!
Ok, I am still interested in knowing why the above query wasn't working should anyone know. But while thinking of how to deal with my other data not on the hour...seemed to have made a few queries that do the trick! Access is great...but sometimes very slow to get what you want done when you're still learning!
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Nov 16, 2005
Can anyone tell me if there is a way of displaying a number, which represents the number of minutes of elapsed time, into the format days:hours:minutes elsapsed?
For instance the number (in minutes) 1530 would display as = 01:01:30. 1 day, 1 hour & 30 minutes of elapsed time.
Any help would be appreciated.
Paul.
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Sep 18, 2006
Hi
I have made a create-tabel query that I want to run every 2. hour. How can I set Access up to do this automatically?
eroness
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Jul 13, 2015
I need to know about "Need to query result from access2007 find only "one maximum number" in hour per day every cell ID"
How I use sql command?
See my file at ...
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Feb 11, 2008
Hi, I have a main form with a subform inside it. The subform contains two records but only one is shown during form view, is there any way to show both records at the same time?
I am using continuous forms view for my subforms as i have to.
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Jul 25, 2005
i have a table of time and dates and a value after it inn which i want to do a query which groups these values by every 3 hours e.g
my table
12/02/2001 00:00 6
12/02/2001 01:00 4
12/02/2001 02:00 8
12/02/2001 03:00 12
12/02/2001 04:00 7
12/02/2001 05:00 6
i want the query to do this
12/02/2001 02:00 18
12/02/2001 05:00 25
i cant find anything anywahere and its use ids for a chart in which the chart wizard allows grouping by 1 hour and not by more than 1 hour any help will be much obliged
cheers
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Jul 1, 2006
I've searched the forum and can't quite find what I need so I'm asking for further guidance form all you Access masters out there!
I have a field 'Time' in the format of 'dd/mm/yyyy hh:mm' which has a default value of =DMax("Time ","[Monitoring]")+1.
This increments 1 on the 'dd' bit when each new record is created, however what I want is for the hour (hh) bit to increment 1 on each new record.
Not sure if I'm being niave but I thought it was some sort of formatting issue, so I've dabbled with a few but to little effect unfortunately.
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Jan 2, 2006
Hello Everybody...
I have a Question.
How do I convert a number (26) to 26:00 Hours.
The thing is.
I have a database that calculates the hours of overtime.
for example.
I work from 7:00 to 19:00.
Then I get 12:00 hours of total time.
The above is no problem.
But no I want to deduct the number 2 from 12:00 hours.
I hope to hear from u guys soon
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Jun 14, 2007
Hi,
ive searched the forums for this but cant find anywhere.
how can i add one hour onto a time stamp please.
many thanks:confused:
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Jun 3, 2006
Hello!!!
I've a trouble:
I have an Access DataBase with two tables:
1--Workers with fields (ID, Name and $/hour)
2--Marks with fields(ID, WorkerID, Datetime of mark)
Well, I need to generate a report with the following structure:
Name Worker / Number of days worked / Total Cost in $
---------------------------------------------------------------------------
Worker 1 / 19 / 13000$
Worker 2 / 20 / 21354$
Worker 3 / 12 / 12000$
...
Example of Workers Table Data:
ID / Name / $/hour
-------------------------------------------------------------------------
21367 / Worker 1 / 21,34$
54883 / Worker 2 / 54,87$
87364 / Worker 3 / 5,38$
Example of Marks Table Data:
ID / IDWorker / DateTime-Mark
-------------------------------------------------------------------------
6754-54 / 21267 / 19/05/2006 8:05:32
4327-12 / 54883 / 19/05/2006 8:07:12
7645-98 / 87364 / 19/05/2006 8:13:54
5432-99 / 21267 / 19/05/2006 14:05:32
7584-23 / 54883 / 19/05/2006 14:07:12
9485-23 / 87364 / 19/05/2006 14:13:54
... / 21267 / 19/05/2006 16:05:32
... / 54883 / 19/05/2006 16:07:12
... / 87364 / 19/05/2006 16:13:54
... / 21267 / 19/05/2006 20:05:32
... / 54883 / 19/05/2006 20:07:12
... / 87364 / 19/05/2006 20:13:54
... / 21267 / 20/05/2006 8:05:32
... / 54883 / 20/05/2006 8:07:12
... / 87364 / 20/05/2006 8:13:54
... / 21267 / 20/05/2006 14:05:32
... / 54883 / 20/05/2006 14:07:12
... / 87364 / 20/05/2006 14:13:54
... / 21267 / 20/05/2006 16:05:32
... / 54883 / 20/05/2006 16:07:12
... / 87364 / 20/05/2006 16:13:54
... / 21267 / 20/05/2006 20:05:32
... / 54883 / 20/05/2006 20:07:12
... / 87364 / 20/05/2006 20:13:54
The condition to increment number of days is:
YEAR(date-mark) != YEAR(date-mark) OR
MONTH(date-mark) != MONTH(date-mark) OR
DAY(date-mark) != DAY(date-mark)
for example:
1)
19/05/1982...time-mark // Worker 1
19/05/1982...time-mark // Worker 1
19/05/1982...time-mark // Worker 1
19/05/1982...time-mark // Worker 1
-----------------------------------> 1 days worked
2)
20/05/1982...time-mark // Worker 1
20/05/1982...time-mark // Worker 1
21/05/1982...time-mark // Worker 1
21/05/1982...time-mark // Worker 1
-----------------------------------> 2 days worked
Do you understand it?
Well, I've tried several SQL sentences, but I can't make the definitive sentence. Can you help me, please?
Note --> each Mark-Datetime represents an instant of time!!!
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Mar 31, 2008
Okay,
Missing something simple here and can't figure it out. I want to display a time in military 24-hour format but can't get it to show the first "0" between the times 0000 - 0959.
Current statement is:
datTripTime = Format(datArr, "HH:mm")
What am I missing please???
Thanks
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Jul 16, 2005
MY QUESTION:
I’m using Access 2002.
I’m trying to create a query that will COUNT the number of values within 1 hour time bins (e.g. 00:00 to 00:59, 01:00 to 01:59 etc). The catch is that I need to have every hour bin represented whether there is any value in it or not. I believe that I need to create a separate table of the bins that I want (include bin start-value & stop-values) and then bring this table into my query and join it to the original table.
I was able to construct the make table query below to COUNT the values in hour bins for which there were records, but I also need rows for all of the zero values;
SELECT [All NWHI Detections].Species, [All NWHI Detections].Transmitter, [All NWHI Detections].Island, [All NWHI Detections].Location, DatePart("yyyy",[All NWHI Detections.Date]) AS [Year], DatePart("m",[All NWHI Detections.Date]) AS [Month], [All NWHI Detections].Date, [All NWHI Detections.Date]-[SharkTaggingSummaryTable.DateDeployed] AS [TimeSinceTagged(days)], CDate2Julian([All NWHI Detections.Date]) AS [Julian Date], DatePart("h",[All NWHI Detections.Time]) AS HourBin, Count([All NWHI Detections].Time) AS TotalNumberofDetections INTO [GLM HourlyBins]
FROM SharkTaggingSummaryTable INNER JOIN [All NWHI Detections] ON SharkTaggingSummaryTable.Transmitter = [All NWHI Detections].Transmitter
GROUP BY [All NWHI Detections].Species, [All NWHI Detections].Transmitter, [All NWHI Detections].Island, [All NWHI Detections].Location, DatePart("yyyy",[All NWHI Detections.Date]), DatePart("m",[All NWHI Detections.Date]), [All NWHI Detections].Date, [All NWHI Detections.Date]-[SharkTaggingSummaryTable.DateDeployed], CDate2Julian([All NWHI Detections.Date]), DatePart("h",[All NWHI Detections.Time])
HAVING ((([All NWHI Detections].Species)="tiger"))
ORDER BY [All NWHI Detections].Transmitter;
Q1? Creating the hour bins table
This table will be very large because it will need to have 4 years worth of hour bins for each transmitter (N=15) and location (N=12). This results in 6,307,200 hour bins! How can I write a query to create this table, or is there a better way of doing this?
Q2? Bringing the hour bins table into the main query.
How do I include the hour bins table in the main query to get my final result.
Any help would be greatly appreciated! Thank you.
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Apr 24, 2006
is there a way to count - in one query - the number of records that fall between specific times:
Time CountOfRecords
0000-0100 7
0100-0200 2
etc
2300-2400 4or do i have to do separate grouping queries then separate counting queries for every hour of the day? a crosstab? something else perhaps? feels like i'm missing something obvious (i hope...).
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May 23, 2014
I am trying to round off times to the nearest half hour. To be clear, I don't want to only round down or only round up. I need the rounding to be to the nearest half hour. I want to do this in the query, not vba. I've attached a picture of the query.
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Jul 22, 2007
I have a form in continuous forms mode...
Each entry is something the user is supposed to check on once and hour and update.
I have a "Last updated" field.
Now() goes into that field every time the record is updated.
I have a querry that will show the users records that are over an hour old.
How can I get Access to pop-up a window or something to alert the user they need to look at something? It would be really nice if Aspect would start blinking in the task bar or something.
Thanks!
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Jan 8, 2014
What is wrong with this query?
=IIf(IsNull([OffPeakDay],IIf(IsNull([OffPeakHour],Sum([Import]-[Export]),0)))
What I want is to sum the field (Import minus Export which are numeric) on the form if the OffPeakDay AND OffPeakHour fields are null.
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Sep 29, 2014
I am trying to display on a form the average number of lines/records per hour that a person is adding to the database.
Trying to work with Dfirst and DLast I'd subtract the time of the most recent record from the time of the first record entered and then divide the number of records to display the average per hour in a text box.
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Dec 30, 2014
I would like to filter data from a table using a query (from an data input form). The objective is to output all results if input form field is empty and to output results higher or equal to the type in the field if field is not Null. The query code is as follows:
IIf(IsNull([Forms]![Form2]![MaxDiffInput]);[Maximum operational pressure (bar)];[Maximum operational pressure (bar)]>=[Forms]![Form2]![MaxDiffInput])
However, is not providing any result when the input field (MaxDiffInput) as a value.
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Aug 10, 2012
I want a Text Box Query on my form to display the Status, Workshop, Time, Enrolled and Limit. The problem is these values come from two different tables and the Enrolled value comes from a single field that contains the different workshops.
What I mean is: In Table[Attendees] a row contains a customer's Number, First Name, Last Name, Workshop and Phone Number. The workshops vary for each customer so one row on the table could have John Doe attending Cover Letter Writing and the next row could have John Smith attending Resume Writing. What I want is to be able to count the different workshops within the Field[Workshop] and total them and then display the total in a Text Box Query. I have a Text Box Query set up displaying Status, Workshop, Time and Limit as these values all come from Table[Workshops].
So basically I need to Query to also display a result that is the Total for each workshop from Table[Attendees] and display the total for each workshop in a Query with data from Table[Workshops].
Here is a link to an Example Database [URL] ....
I'm trying to avoid putting things on different reports and the like because the people using this are basically computer illiterate and if they have to click a button (no matter how well labeled) they won't do it and the information might as well not exist.
And if there's a better way to do it, I'm all ears. The only thing is, I have to update these workshops month by month. Since they are dynamic, I want to avoid creating separate tables for each workshop.
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Dec 17, 2012
I have a table and a simple query that pulls results from the table. Nothing too crazy. But, if I were to go in and change some of the data/values in the query results it will change the respective data in the table. I know that this cannot be right. What do I have to do to either prevent the ability to change query results and/or prevent any changes in the query from altering the original data in the table.
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Nov 20, 2013
I am wondering if there is a quicker way to export a query to excel then have the data in that query removed from the original table. (effectively cutting the data from the table and exporting to excel)
I understand that this can be done by exporting the query to excel then running the same query as a delete query to remove the data but I just wondered if this is the most efficient way.
I have experience of VB in excel but currently only use the basic macro builder in Access though if Access VB is more efficient I can easily learn.
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Aug 12, 2014
I have a database which among other things records how jobs are received i.e.: Telephone, Email, Mail, Facsimile or Web.For each client I want to identify the percentages of each method of receipt against the total of jobs received and during different time periods.I have created a make table query for all jobs received between variable dates for a client entry of the name of the client and the start and finish dates are required to run the query.
I have a crosstab query set up to count each method of receipt and a final query to work out the percentages using the total from the crosstab query fields divided by the total of all methods.I have a macro set up to replace the table with new data when I want the stats for a different client between new dates, therefore the different methods of receipt may vary for the less active clients i.e.: they may only have telephone and email .
My problem is if I choose a client where we have not received a job by a particular method (say web or facsimile), the last query working out the percentages has fixed names to cover each method but naturally produces an error when it cannot find a corresponding method of receipt. I have experimented with NZ() without success.My question is can I either have preset standard names of the column field in a crosstab query? Alternatively in the query calculating the percentages, can I include code to ignore a non-existent field in the crosstab query.
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Nov 28, 2006
I am creating a database for a hyperthetical car hire company.
I have a field with a lookup/query. The data that this query searchs for is entered into my table/form already. Is there anyway of avoiding repeating this data twice?
Iain
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Apr 1, 2008
is it possible to repeat a query on data returned by the same query while returning it to a single table?
i have a query that runs on the following info:
PartNumber - the part number of an item
AsmNumber - the part number of the item the part belongs to
IsAsm - true/false on whether or not the part is an assembly
(see attached database)
the current query, when 11135 is used as input, returns 11124, 11165, 11103, and 11155. likewise when 11165 is entered the query returns 11109, 11110, and 11111.
i would like the query to return 11124, 11165, 11109, 11110, 11111, 11103, and 11155 when 11135 is entered.
the sample database attached is stripped down but accurately reflects what i'm working with. i do not know how many sub-assemblies belong to a top-assembly (could be zero, one, or sixteen), therefore i think the 'sub-query' would use the 'IsAsm' value as some sort of criteria - yes?
if what i'm asking is impossible, i'm very open to suggestions as long as they work with the data given.
i appreciate any help (especially being this is my first post) and apologize for the verbose post, i'm not good with brevity.
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Mar 29, 2007
Hi there
my current query
INSERT INTO [Transaction] ( booking_ref, transaction_type, transaction_description, transaction_amount, [date/time] )
VALUES (10, 'Booking', 'Hotel Room Booking Charge', 4.5, Now());
now instead of 4.5 for transaction amount, i want to get the data from another query. My other query gives off one row and 1 column which is called "price per night" The other query name is Booking Price per Night (it uses the same [Booking Ref] Parameter.
I hope someone can point me in the right direction
thanks in advance
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Mar 4, 2008
how can i msgbox data from a sql query
Tasklist.RowSource = "SELECT [Tasks].Staff_Name,
WHERE [Tasks].staff_name = "josh"
[Tasklist].Requery
i tryed to use
msgbox Tasklist.Staff_Name
but i get an error message
any ideas
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