Working With Dates In Queries
Sep 15, 2005
I have set up an Attendance database at work, where a record is created for each member of staff when they are absent. The tables are set up as follows:
[tblStaff]: StaffID, FirstName, Surname, Team, JobTitle
[tblAbsence]: StaffID, StartDate, EndDate, Issue
What I want to be able to do is set up a query to search for a reason for absence on a certain date (btw my date format is set at dd/mm/yyyy). The problem I have is if the user needs to check a date in between the start and end date i.e. Start Date is 11/11/2005 end date is 11/12/2005 and the user checks on 01/12/2005 then this record will be found.
I know there is a simple way to do this but I can't seem to figure it out. Any help would be greatly appreciated!
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Aug 30, 2014
Can't figure out why dlookup will not work for me in a query for certain dates?
Simple example to highlight the problem:
Table1 -
Read_Date----Read_Value
31/07/14-------10
01/08/14-------20
03/08/14-------30
20/08/14-------40
Query based on this table with the following calculated field:
Expr1: DLookUp("[Read_value]","Table1","Read_Date=#" &[Read_Date]& "#")
Query output -
Read_Date-----Expr1
31/07/14--------10
01/08/14
03/08/14
20/08/14--------40
Will not return a value for 01/08/14 or 03/08/14 (dd/mm/yy)
If you try it with many dates its skips several and I cannot see a pattern.
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Sep 9, 2013
I am trying to run a change an existing query in real time to allow date filtering for 4 different categories. I can get two of them to work. Calibration Date and Icepoint Date. But for The two calculated fields Calibration due date and Icepoint date I cannot get it to filter properly e.g. for 2013 dates it also includes 2014 dates and just does not work properly. I am thinking its due to it being a calculated field but don't have a clue how to fix it. see pasted code for calibration due date filter where Todate and Fromdate are the 2 dates used. I also have the on current code and the exit code to reset the query to its original status.
Public Sub SetDate1()
'Apply date filter and rebuild query in real time
On Error GoTo Err_SetDate1
If IsNull(Me!ToDate) And IsNull(Me!FromDate) Then
MsgBox ("Please Enter Date First"), vbExclamation
GoTo Exit_SetDate1
[code]....
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Mar 7, 2008
Hi there,
I have long file (1 mil records) downloaded from AS400 as .csv text file.
there 2 feilds - shipping date and receiving date.
I need to calculate the lead time in days as RecievingDate - (minus) ShippingDate.
It would be easy in Excel, but i have too many lines.
So there are 2 problems.
How to make text data from .CSV the date in Access?
How to calculate using date data in Access?
Thanks to everybody interested to help.
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Dec 11, 2006
Hello,
I am trying to work out how to find the difference between two dates, in years and days. I have a [date_of_birth] field and another field [date] and wish to work out the difference in years and days as opposed to decimal years. Is it possible to do it?
Thanks.
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Apr 5, 2006
Hi,
I am using an ADO connection to an access Db but am having from executing a query on the table.
In my table I have a Field named [Date] with Data Type as Date/Time (Short Date dd/mm/yyyy). When I perform a Query on the Db like;
SELECT [Date], [Part No], [Batch Qty] FROM [Speed Fastener Packing] WHERE [Date] LIKE '28/03/2006'
The above works fine and produces results, but if I do the following - then it come up with error - data tyle mismatch;
SELECT [Date], [Part No], [Batch Qty] FROM [Speed Fastener Packing] WHERE [Date] = '28/03/2006'
Any Ideas Why? TIA
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Apr 5, 2006
Hi,
I am using an ADO connection to an access Db but am having from executing a query on the table.
In my table I have a Field named [Date] with Data Type as Date/Time (Short Date dd/mm/yyyy). When I perform a Query on the Db like;
SELECT [Date], [Part No], [Batch Qty] FROM [Speed Fastener Packing] WHERE [Date] LIKE '28/03/2006'
The above works fine and produces results, but if I do the following - then it come up with error - data type mismatch;
SELECT [Date], [Part No], [Batch Qty] FROM [Speed Fastener Packing] WHERE [Date] = '28/03/2006'
Any Ideas Why? TIA
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Apr 1, 2007
I have a query built by someone else that I think is the root of my problem. The query runs and selects Officers of an Insurance Company based on the dates in a table stating when they were officers. The problem is one of the date (enddate) is blank since he/she may be a current officer. The query reads ">[RPT_NAIC_AF1]![BeginDate] And <=[RPT_NAIC_AF1]![EndDate]" It is not returning all records after the start date which has no enddate. If I change the "And" to an "Or" I get the records I want, and a lot more so I know the problem lies here. Help please! I am a novice user but willing to learn.
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Mar 19, 2008
I have a situation where I need to extract the date from a text field to use in a select query. The date in the text field is listed at the beginning of the text field like this.
S12345678 3/21/2008 adittional text beyond here blah, blah...
the first series of numbers can be either 9 or 10 digits long, and then the date is always in this format, the length of the characters change accordingly with the date. So trying to use the Mid function only wont work.
I supposed I need to find a way to get the position of the space character in front of and after the date to use the Mid function for each record.
I need to be able to extract this date to do a DateDiff against another date.
I have been trying to do something like this.
Narr_Date: Format(Mid([si_narr_t],InStr(1,[si_narr_t],Chr(32)),InStr(9,[si_narr_t],Chr(32))),"Short Date")
But I know I am off the mark here. Can someone tell me what I am missing?
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Nov 5, 2007
I've had it before, but can't find it.
basically something like this --
DateDiff("w", StartingDate, EndingDate)
that also makes sure date is not in tblHolidays.
anyone knows how to acomplish this ?
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Feb 1, 2006
I would like to count the number of working days between two dates, NOT the calendar days, if the workers only work Monday thru Thursday. I know we could use the DateDiff function, but HOW do I count excluding Fridays, Saturdays, Sundays?
Thank you for your help.
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Jan 26, 2015
I am trying to carryout working days between two dates (Excluding weekends Friday & Saturday) but unable to fix it correctly, However i did search a lot over internet also about built in function but all is showing i have to add it module or macro etc.So, i select the module for Access 2010 but also not finish with function.Table name is "LeaveSettlement" and column name is "Total_Wdays", what field type i have to select for result column.
Public Function LeaveSettlement(ByRef Leave_Start As Date, _
ByRef Leave_End As Date _
) As Integer
' Returns the number of weekdays in the period from Leave_Start
' to Leave_End inclusive. Returns -1 if an error occurs.
' If your weekend days do not include Saturday and Friday and
' do not total two per week in number, this function will
' require modification.
[code]...
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Oct 6, 2013
The below function returns correct time difference between workdays. However, it is excluding Saturday as per the code.
It is calculating 06:30 am to 22:00 pm time for weekdays but I also want it to calculate the time from 10:00 to 13:30 on a Saturday.
I am trying to use the NetworkMinutes function to achieve this. However, there is a problem getting the time for Saturday.
Code:
Option Compare Database
Option Explicit
'---------------------------------------------------------------------------------------
' Procedure : NetWorkMinutes
' Author : Rod
' Date : 13/12/2012
' Purpose : Returns the number of work minutes between two date-time arguments.
[code]...
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Oct 26, 2006
I have searched the forum for this answer but no luck. :(
I'm trying to calculate the amount of WORKING time between two dates in an Access database. At the moment i am just subtracting one date from another but this gives me all of the time in between including weekends and evenings.
I need this time to be calculated in hours.
In Excel i know there is a NETWORKINGDAYS function which does something similar but with days rather than hours.
At least if i could get the working days i could then convert it into hours.
Please help!
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Mar 16, 2008
Any ideas on calculating future dates based on # of working hours. For example... If a task is suppossed to be completed in 32 business hours, when would that be? Considerations include standard working hours M-F, no working hours on weekend. I have to believe that someone has written this before and I don't need to reinvent the wheel. ANy help is much appreciated!
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Aug 28, 2013
I have built a query to calculate the expiry dates of training courses but I am trying to input a criteria so that only dates within 90 days of todays date show. I am using Date()<90 but it doesn't return the correct information. What the criteria should be for this?
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Apr 9, 2015
I have a table of records, which has within it two date fields (effectively, a 'start' and 'end' date for that particular record)
I now need to create a query to perform a calculation for each date between the 'start' date and the 'end' date
So the first step (as I see it anyway) is to try to create a query which will give me each date between the two reference dates, in the hope that I can then JOIN that onto another query to perform the necessary calculation for each of the returned dates.
Is there a way to do this?
So basically, if for a particular record, the 'start' date is 01-Apr-2015 and the 'end' date is 09-Apr-2015, can I produce a dataset of 9 records as follows :01-Apr-2015
02-Apr-2015
03-Apr-2015
04-Apr-2015
05-Apr-2015
06-Apr-2015
07-Apr-2015
08-Apr-2015
09-Apr-2015
(The *obvious* solution would be to create a separate table of dates, from which I could just SELECT DISTINCT <Date> Between #04/01/2015# And #04/09/2015# - but that seems like a dreadful waste of space, if that table is only required to generate the above? And it would have to cover all possible options; so it would either have to be massive, and contain every possible date - ever! - or maintained, adding new dates as necessary when they are required. Seems horribly inefficient!)
Is it possible to just select each date between the two reference dates? Or can you only query something which exists somewhere in a table?
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Jul 8, 2014
I have two tables with dates. Between (!) every two following dates in table1, I want to know the number of dates in table2. How do I write an SQL query for this? The tables I have are up to a few hundred records in table 1 and a few thousand records in table2. So to prevent that this takes hours I need a fast query.
To explain the query I need, for example:
table1
01/01/2014
15/01/2014
17/01/2014
30/01/2014
table2
01/01/2014
02/01/2014
05/01/2014
17/01/2014
18/01/2014
20/01/2014
21/01/2014
25/01/2014
So the answer of the query would be 2,0,4.
Explanation:
Between 01/01/2014 and 15/01/2014 in table 1 there are 2 dates in table2 (01/01/2014 is not included between the dates)
Between 15/01/2014 and 17/01/2014 in table 1 there are 0 dates in table 2
Between 17/01/2014 and 30/01/2014 in table 1 there are 4 dates in table 2
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Sep 24, 2013
I have a query which returns a calculated percent. I have ordered that in descending order, and now want to see the top 50. So (In Access 2010) I entered 50 into 'Return'. But it returns all of the records!
Is this because pct is a calculated field? How can I correct this? The SQL seems to be correct.
Code:
SELECT TOP 50 HeciFail1.POHECI, HeciFail1.POQTY, HeciFail1.FAILQTY, IIf(Nz([FAILQTY])>0,Round(100/([POQTY]/[FAILQTY]),0),0) AS PCT
FROM HeciFail1
ORDER BY IIf(Nz([FAILQTY])>0,Round(100/([POQTY]/[FAILQTY]),0),0) DESC;
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Feb 14, 2008
Any reason why some of the queries do not display the info correctly? as in the many to 1 or 1 to many relationships etc.. its just blank lines. How would I fix it (if nessicary)
http://img152.imageshack.us/img152/2986/queryqr8.th.jpg (http://img152.imageshack.us/my.php?image=queryqr8.jpg)
Thanks.
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Aug 13, 2005
I have two tables linked by a one-to-many - Demographic and Episodes. I have been running numerous queries with no problem until now - and I can't find any reason that these are not working.
I need to print up a bunch of different reports based on the criteria entered into the fields (yes/true; date ranges; is null or is not null, etc.) For some reason, records that are not supposed to come up (out of date range, or all records whether yes or no) are coming up.
Could it be some simple thing that I've obviously missed? The only difference with these new queries is that significantly more fields have criteria entered, instead of just one or two fields. Do the fields have to be put in some particular order from the design view? When it didn't work the first time, for example, a field that should be "Is Not Null", I ended up entering the "Is Not Null" on the second criteria line also - hoping that would make a difference....or in another field, "Yes" on the first line and 'True" on the second. In some queries, it made it better - but it still pulled up a few odd records, due to the date range being ignored, or another field criteria not working, etc.
I am grateful for any help I can get on this - I'm going insane trying to figure it out!!
Thanks,
Janis :-)
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Jul 21, 2013
I have written a large number of queries to gather data for a quarterly monitoring form. How do I replace the dates to update them for next quarter.For example I have written a query which counts the number of new members who started in the period 01/04/2013 to 31/07/2013. How can I change this (and the other 200 queries) without opening them all individually and manually altering it. Is there an Access equivalent of Word's Find and Replace?By the way I am using Access 2000.
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Jul 3, 2014
I am trying to create a query in VBA to extract data for a report.
I am using the "Like" operator for one of the variable fields.
It works correctly if you use the full value, however when using a wildcard it returns no records. Example below.
MOP - Works returning several records.
M* - returns no records.
I am getting very frustrated - I am sure its something simple.
I hope I have uploaded a screen dump of the SQL statement that is being produced.
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May 21, 2013
I have an simple Access 2001 database with one table in which I want to search multiple fields for entries which match upto four keywords using subqueries.I have entered the following sql code:
SELECT Components.[Component-type], Components.Value
FROM (SELECT Components.[Component-type], Components.Value
FROM (SELECT Components.[Component-type], Components.Value
FROM (SELECT Components.[Component-type], Components.Value
FROM Components
[code]....
and then refuses to save it giving the error: "Invalid bracketing of name 'SELECT Components.[Component-type"If I remove the changes it will save ok. This is only a test query as I will want to add many more fields and it is my first use of sql code.
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May 24, 2013
I am combining forms and queries to make my DB more user friendly. Everything was working on the forms until I tried the export button.
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Dec 11, 2014
I know a fair bit about access 2010. I have the following table
------------------------------------------------------------------------------
- product no ----- Branch ID --- POS Description --last sold date --
------------------------------------------------------------------------------
- 123 ------- 1 ----- fly rod ---- 19/01/2014 ----
- 123 ------- 2 ----- fly rod ---- 19/03/2014 ----
- 123 ------- 3 ----- fly rod ---- 19/05/2014 ----
- 123 ------- 4 ----- fly rod ---- 19/06/2014 ----
- 123 ------- 5 ----- fly rod ---- 19/09/2014 ----
- 633 ------- 1 ----- fly reel ---- 11/01/2014 ----
- 633 ------- 2 ----- fly reel ---- 11/03/2014 ----
- 633 ------- 3 ----- fly reel ---- 11/05/2014 ----
- 633 ------- 4 ----- fly reel ---- 11/06/2014 ----
- 633 ------- 5 ----- fly reel ---- 11/09/2014 ----
------------------------------------------------------------------------------
I need it to give me back, one row per product (product no) - the newest date (Date Last Sold)
So i am trying to find out the last time each product sold, regardless of where
Which i can do with MAX date, group by product num
SELECT SMKPLUDetail.[Product No], Last(SMKPLUDetail.[Branch ID]) AS [LastOfBranch ID], Last(SMKPLUDetail.[POS Description]) AS [LastOfPOS Description], Max(SMKPLUDetail.[Date Last Sold]) AS [MaxOfDate Last Sold]
FROM SMKPLUDetail
GROUP BY SMKPLUDetail.[Product No];
------------------------------------------------------------------------------
- product no ----- Branch ID --- POS Description --last sold date --
------------------------------------------------------------------------------
- 123 ------- 5 ----- fly rod ---- 19/09/2014 ----
- 633 ------- 5 ----- fly reel ---- 11/09/2014 ----
------------------------------------------------------------------------------
This is great, but ofcourse (last of is fine for description) as is does not change
But last of, always returns branch 11.. and i infact want the branch which is correct, the branch which the date last sold is from, the current record really
but i do not seem to be able to get it to show me, any other fields from the querry current row.
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