I would like to add fields from one table to another based on matching datetime codes.
Most data are in the table 'metadata' (information on sound recordings), and i want to add lat long fields from a large table of GPS points 'gpsData'. Each record in the metadata table has start and end datetime fields - i want to a add lat and long that matches the start time and a lat and long that matches the end time (so four fields to metadata).
My approach has been to try this with two separate select queries (i.e. one for adding the start locations and one for adding the end locations), with the intention of then combining these two outputs in a single table.
When i try a simple select query though I can see that:
a) there are no matching time codes for some records, because although the hh:mm:ss look the same there are differences in the lesser decimal places of the datetime serial numbers. I have tried using the round function on the datetime fields of both tables but this doesn't fix it (I don't understand why not).
b) there are some duplicates because there are sometimes more than one GPS point for each second, and the metadata times are given to second precision (so some metadata records get two entries in the query result).
How can I have the query select the gpsData record with the nearest datetime stamp to that in the metadata table's start time field? The respective field names are UTC and StartUTC. Can i do the same for the end times simultaneously or should i do this separately?
I have a table with 'General Date' column. So I have to create query wich extracts records between Last record (via Date field) and 'for example' 10 days before. But Last record in Date column may differ from Now().
When this is done I have create calculations with extracted records using agregate functions.
I'm trying to use Last function for Criteria putting it into Date field and substracting with -10 (for 10 days) but it doesn't work.
I'm trying to create a query that will return the closest matches to what is input. However the closest i have gotten to this working correctly is by using the following criteria.
Like Left([Forms]![TESTTESTTEST]![Text2],1) & "*"
Now obviously this isn't a great solution as it just produces results that match the first number but i need it to display results closest to the number entered into text2.
Basically i am doing this as a designer can search for a gap on a machine where there new project can fit on causing the least amount of disruption. So by entering in the size of there project the query will display jobs of a similar size that are already planned on the machine.
I have a field on a table that is a DateTime format and it needs to be that way. I am trying to query that table for all the dates to use in a combobox but I only wat the date not the time. The problem is when I format the field to just date I can't sort it anymore as a date and I can't group them. I still get multiple lines in my combobox because there multiple times for the same day. what is the proper way in a query to extract just the date from a field and still sort it as date ie 1/12/2015 is greater than 12/15/2014?
I need to do a report that takes data from many different tables (like 10).
To do this I have a big query with many LEFT JOIN to link all the tables together. I have made this query last year and it worked well and efficiently until now.
But I have to add something there, and the problem comes with it :
One of the tables is a currency exchange rate table, with the exchange rate of USD to 50 different other currencies and for each day since Jan 1st 2011.
But in this table there are some dates when a currency does not have an exchange rate (example : it was a holiday in that country, so there is no official exchange rate with this currency on that day).
However, I need to have rates even if they are not present in the table.
I need to get the nearest rate, for example if the rate of EUR on 31st December is not available, I can take the one of the 30th, or 29th or January 1st...
Ideally I would like to do the following :
Add a new LEFT JOIN to my already big query that would look like :
LEFT JOIN CurrencyExchangeRate ON ABS(RateDate - Instrument.Date) < 3
But to take only the closest rate.
I tried with a subquery :
LEFT JOIN (SELECT TOP 1 * FROM CurrencyExchangeRate WHERE ForeignCurrency = Instrument.Currency1 AND ABS(RateDate - Instrument.Date) < 3) AS MRate ON MRate.ForeignCurrency = Instrument.Currency1)
But the subquery does not accept Instrument.Currency1 because it is not part of the table CurrencyExchangeRate
I have a solution that should work, it is to search for this rate in a subquery in the select clause instead of doing a left join. But the tables are quite big (hundreds of thousands of entries) and my work machine is not really 'fast' so it would take hours and hours (when I tried I stopped after 3 hours).
I know there is the solution to make a macro to "fill" the missing rates with the rate of the previous day... But I would prefer not to go to this extent.
I am increasing prices and after increasing I am left with 4 decimal places and am trying to figure out how to run an UPDATE query to round down prices to the nearest 5 cents, examples below:
42.4516 round to $42.45 42.4659 round to $42.45 42.4489 round to $42.40 2.49 round to $2.45 2.46 round to $2.45 2.44 round to $2.40 2.04 round to $2
I have a table of standard Circuit Breaker (CB) sizes. I then calculate a minimum CB size in a query field. I want to use that calculated minimum value to look up the next largest CB size from the table and fill a field in the query with it.
For now, I am going to add a field to the CB size table with the smallest size CB which would be assigned that standard value. I will then use a Dlookup with conditions of greater than "smallest size" and less than "standard size" fields from the CB size table.
I think this will work fine, but there must be a better way.
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.
I have a timesheet database, which has the exact start time and exact end time. I want to ignore this if it is five minutes either side of the half hour, and display the exact half hour, but otherwise want to round it UP to the nearest fifteen minutes.
I have a larget transaction data set in access with Datetime column/filed.
I have been running pivot queries to excel to do analysis of the data but the datetime field is returning too many unique values for the pivot table to run.
What is the best way to reduce the datatime field to date only and where should this be done?
i.e. should I have a calculated field that trims datetime or should I set someohting up in Powerpivot?
Based upon a specific date (varDate), I want to select the record that is active (who drives the lease car).
row 1 user X from 13/11/2013 row 2 user Y from 15/11/2013 row 3 user Z from 17/11/2013
I want to find the active user on a date. So on date 13/11/2013 (=varDate), user X is active, on 14/11/2013 (=varDate), user X is still active, on 15/11/2013 (=varDate), user Y is active, on 16/11/2013 (=varDate), user Y is still active and on 17/11/2013 and later, user Z is active.
I have a table that archives hour meter readings for my equipment. You sharp folks here helped me set it up and it works great. Thanks! I am at the point now where I want to do some studies and calculations on this data. The first project I’m working on is equipment utilization over a period of time. I have all my calculations figured out, all I need is to pull the proper data out and run it through. And that’s where I’m a little stuck.
My table is just three fields: tblHourMeterArchive = eqnum, readingdate, meterreading. I want to be able to input a StartDate and EndDate and have the query choose the archive date that is nearest to the input date and the meter reading on those dates. For example, I have meterreading dates of 1/9/05, 1/30/05, 6/5/05, and 6/19/05. I input 1/18/05 as the StartDate and 6/16/05 for the EndDate, the query should return the archive dates of 1/9/05 and 6/19/05. How would I go about doing this?
I’ve done some research on “nearest date”, but most of the information has been about doing it in VB and SQL. Can this be done without going into coding? I’m still very much a novice when it comes to VB code. Ultimately, I would like to have this work with a form and calendar controls. I’ve been studying some of the examples and suggestions for the calendars, but I’m not really sure how I would go about setting up a query in code and linking it all together.
As always, any help and/or links to information you could provide would be greatly appreciated.
I am trying to deduct a datetime field from a date field to decide how many days are in between. It doesn't let me. So do I need to convert the datetime field to a date field first? How would I do that?Or is there a function I can use to calculate the date difference?
I'm fairly new to Access. 's various select queries containing useful and useless results. I want to create a select query that will pick out all the useful figures into a 1 row table that can then be pasted into Excel.
e.g Existing Select Query 1 returns 1 row showing Average Age, Average Price, Total rainfall Existing Select Query 2 returns 1 row showing Average Weight, Average Salary, Total snowfall Existing Select Query 3 returns *2* rows: It returns Distance from London, Hours daylight and population for Town A and Town B
I want a select query that returns 1 row showing (6 items):
Total rainfall, Total snowfall, Town A Distance from London, Town A Population, Town B Distance from London, Town B Population.
I've been able to handle getting Total rainfall and Total snowfall. But I cant figure out how to get Town A Distance from London, Town A Population, Town B Distance from London, Town B Population to appear in the same row of the same query results as Total rainfall, Total snowfall.
I have a subform containing a list of Funds and attributes such as Asset Type, Fund Manager, etc.
Currently, I have a textbox, where the the control source is set so that it will be updated with the Asset Type from the subform.
I also have an unbound combo box that contains a list of Asset Types queried from a table via row source, where user can select the Asset Type.
What I would like is when a record is selected from the subform, the Asset Type is selected on the combo box as a default value. User can select another Asset Type if required. How can I do this?
I would like to select a record from my combobox dropdown list and have that record populate in my subform. Currently, I am only able to select the 1st record at the top of the dropdown list to appear in my subform. But I would like to select any record from the dropdown list and have it populate my subform.
I want to make query where I want to show data only from time1 to time2 (for a month).
I want to make this in Access because I need Forms.
I made this on the SQL Server but I had to change the time limits in the code what I don't like. How to make this in Access SQL?
On the SQL server it looked like this:
SELECT * FROM TimeSample WHERE TimeVal - CAST(FLOOR(CAST(TimeVal AS float)) AS datetime) > '10:00' AND TimeVal - CAST(FLOOR(CAST(TimeVal AS float)) AS datetime) < '17:00'
I have been searching the forum for the last hour or so. I'm new to access, vba and macros. So I asking for some help, please be gentle with me. I'm am trying to round up the the nearest twenty.
example. I have a table that contains an estimate take-off f and I want to round the pipe footage to the nearest 20 for purchase amounts and update the table.
I need to find the nearest dates between two tables.
Table1 contains dates 11/1/2006 to 11/30/2006
Table2 contains only two dates: 11/5/2006 11/19/2006
I want Query1 to produce the nearest date in Table2 beside each of the dates in Table 1. Example: Date Nearest Date 11/1/2006 11/5/2006 11/13/2006 11/19/2006 etc.
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.
Is it possible to convert the text field that comes in this form:
:80421
to the following datetime format: MM/DD/YY 12:00:00AM
Please note that the text field contains a colon at the beginning. The number 8 represents a year (2008), the 04 represents a month (April) and the last two characters are days in the month (21). The converted field should look like:
