Matching Dates
Feb 23, 2007
Hey all
I have a function to display the opening hours for the next 7 days for a client. I have also included the functionality whereby you can create a "special day" with non - standard opening times which are stored in the database.
I have a simple SQL to check to see if the current day is a special day:
Code:SELECT * FROM SpecialDays WHERE SpecialDate = #" & currentDate & "#"
I have run into this problem tho. There is a special date in the database for 03/01/2007 (UK date format 3rd January) but this is being retrieved for the 1st of March (01/03/2007)
therefore this query:
Code:SELECT * FROM SpecialDays WHERE SpecialDate = #01/03/2007#
retrieves the record with the date 03/01/2007
Any ideas?
Thanks
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Aug 27, 2013
Looking to match to date fields within a query by using the month and year only, is it possible and how.
I'm using Access 2003
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Apr 30, 2012
I have a table tROE with a field listing all dates starting 1/1/10 to date (populated), and three fields for currency exchange rates [USD], [RSD] & [EUR] which are empty and need to be populated. I have another table tROEPartial that has the exchange rates for some of the dates starting 1/1/10 but not all. Their structures are identical. I want to add the exchange rates from tROEPartial to tROE where the dates match, leaving the unmatched fields in tROE blank.
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Nov 24, 2014
I've been asked to get some information from my database and I'm a bit stuck.
I have a list of refunds in tbl_main and each one includes a dateReceived. I make a record in either tlk_located, tlk_unableToLocate or tlk_bulk depending on the outcome when we're trying to send the money back to whoever it belongs to. Each table has a time stamp (named locatedTime, unableTime and timestamp respectively) field
My manager wants me to report how many entries were unworked on each day in the year, and what the value of them was. An entry is unworked if there is no entry in either of the 3 tables.
So I need a query that lists a range of dates, and for each date counts the number of entries where tbl_main.dateReceived is <= to that date and either has no record in located,unable or bulk or has a record with a timestamp > than the date. (It has been processed now, but hadn't been on the date we are looking at)
I can manage a query that looks at a certain date that it prompts for on each run:
Code:
SELECT Count(tbl_main.trust2PK) AS CountOftrust2PK, Sum(tbl_main.amountRefunded) AS SumOfamountRefunded
FROM ((tbl_main LEFT JOIN tlk_located ON tbl_main.trust2PK = tlk_located.trust2FK) LEFT JOIN tlk_unableToLocate ON tbl_main.trust2PK = tlk_unableToLocate.trust2FK) LEFT JOIN tlk_bulk ON tbl_main.trust2PK = tlk_bulk.trust2FK
WHERE (((tbl_main.dateReceived)<=[cutoffDate]) AND ((tlk_located.locatedTime) Is Null Or (tlk_located.locatedTime)>[cutOffDate]) AND ((tlk_unableToLocate.unableTime) Is Null Or (tlk_unableToLocate.unableTime)>[cutOffDate]) AND ((tlk_bulk.timeStamp) Is Null Or (tlk_bulk.timeStamp)>[cutOffDate]));
I would like a query that lists all dates in a range, and shows the same information for each day listed.
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May 12, 2014
Any way to have a form with Dates as column headers to update a table where the dates are stored in rows???
The table set up is like this:
tblOpHdr
DiaryID (PK) - OpDate (Date)
tblOpDetail
DiaryID (FK) - CostCode - MachineNumber - MachineHours - etc
I'm just wondering if there's any way I can do this with a datasheet or a crosstab type setup?
It's Access 2010.
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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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Sep 7, 2006
Hiya-
I have a database with 5000 entries, corresponding to about 10 entries for about 500 people. Each of the entries is dated, and I need to calculate the time intervals between each person's sequential entries in the table.
One way of doing this is to create another column that contains the date of the previous entry. I can then use DateDiff to subtract one date from the other and give me the difference in days.
This approach falls down if I then work with only a subset of the entries - I would have to re-enter the previous entry dates as the time intervals would have changed.
What I really need is a way of subtracting the date from the date in the cell directly above it. Will Access let me do this, or is there a better way?
Many thanks, Jules.
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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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Nov 15, 2011
I have a master table which shows all transactions per record (person) over a financial year.
Each record person has a seperate package period over which their spend needs to be measured. Therefore although I have all their transactions for the year, I only want to sum their transactions between their given [start date] and [end date] which are in columns.
I need to be able to create a field which sums all expenditure per record between the start and end dates
Name Start Date End Date Invoice Date Amount
Matt 15/5/11 15/9/11 1/11/11 £100
Matt 15/5/11 15/9/11 7/7/11 £200
Matt 15/5/11 15/9/11 12/12/11 £200
In this case I would only want to sum 7/7/11 as this is between the start and end dates
I want to write something like sumif([Invoice Date] is between [start date] and [end date] - not sure where or how exactly
(The start date and end date will always be the same per person)
Is this possible in access?
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Mar 4, 2006
Hello All,
For those who are interested in Approximate String Matching or those who could use these algorithms; I have a complete suite of Approximate String Matching algorithms written in Visual Basic in an Access database.
In 2004 I decided to jump into the world of Fuzzy Matching with both feet.
As it is, I am working for a company that deals with names, addresses, etc. very intensely. It is a fair sized company that
uses Access on a grand scale. Since I am an Access programmer, I work in an Access gold mine!
I knew that if I could get a good handle on Fuzzy Matching, that when I hit the right person at the right time, the company could greatly benefit from my research on Fuzzy Matching. The right time and the right person are not here yet.
Nevertheless, since I have reaped much free source code and information from the Web, it is now time to return the favor.
I developed a package that is sort of a demo/tutorial on Approximate String Matching algorithms in Access that is very
robust in Fuzzy Matching. It would overtax the post in this forum for me to include it in a post.
To summarize, it works with the basic name - Last, First, and Middle. It has a user interface that allows a user to type in
what would be a good name and what would be a questionable name to resemble the good name. The weighted results of all the various algorithms can be chosen, or an individual algorithm can be chosen to display how closely the names match.
In addition, it has a table of 17,295 known good names with unique ID numbers as a reference table, and table of 1200
morphed names that are typical of names entered in a database with no input conventions. These morphed names have typos, transpositions, variations on maiden names, etc. 1200 good names were selected for alteration and the unique ID of each original good name was stored in the table with the altered names to determine the accuracy of the matching process.
The morphed names were compared to the known good names in a query with an approximate join using the suite of algorithms to determine match percentage. The altered names, the ID number of the original good name, the ID number of the name it matched to, and the match percentage were stored in a results table to determine the results of the matching run.
These tables were used to test and tweak the algorithms by comparing the morphed names with the known good names. The results of 1322 names were saved to a results table with match scores.
The matching process was executed in a query with an approximate join using the suite of algorithms.
The match results:
Total Approximate Matches: 1188
(Recall) Precision Pct: 99.00%
Total Unmatched Names: 12
Unmatched Pct: 1.00%
Total Other Matches: 134
Other Matches Pct: .77%
The tables are accessible in the database, so anyone can run their own tests. The interface is set up to accommodate this
as well.
The algorithms used: Dice coefficient as a threshold algorithm, Levenshtein Distance algorithm, Longest Common Subsequence, and the DoubleMetaphone. The names were passed to the algorithms by way of the bigram model.
I will email it to anyone who requests it.
It is in two platforms, Office 97 and Office 2000 as FuzzyMatching97.zip (692 KB) and FuzzyMatching2k.zip (721 KB).
The zip files include ApprxStrMatchingEngine97.pps or ApprxStrMatchingEngine2k.pps respectively, StrMatching97.mde or StrMatching2k.mde respectively, IEEESoundexV5.pdf, and VBAlgorithms.txt.
IEEESoundexV5.pdf is an abstract about Approximate Sting Matching that fired my curiosity about the subject, and pertains to the package.
VBAlgorithms.txt contains the entire suite of algorithms in Visual Basic extracted from the MDB modules.
The PowerPoint presentations describe the workings of the MDE and give a good overview of Fuzzy Matching.
To match is divine....
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Dec 22, 2004
A very elementary question - but I'd be grateful for an answer.
I have two tables (or perhaps two queries) each with a key field. If all is well, there should be complete correspondence between the two sets of records. That is, if there's a record with key 12345 in one table, there should also be a record with key 12345 in the other table.
I'm looking for the simplest way of checking whether or not this is the case, and, if it's not, detecting which records in one table are unmatched by any record in the other.
Will
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Sep 7, 2005
Hello,
I am using this query to get matching data:
SELECT NewMyEstartChild.yordob, NewMyEstartChild.firstname, NewMyEstartChild.surname, NewMyEstartChild.postcode
FROM NewMyEstartChild INNER JOIN For2003 ON (NewMyEstartChild.postcode = For2003.POSTCODE) AND (NewMyEstartChild.yordob = For2003.MyDOB);
but It's giving me more data so to minimise data I was thinking to add another filed. which is Firstname field. but some children's name are spell incorrectly.
How can I match data with first letter only ? I have tries following query but it doesn't work. Please help!!!!!!!!
SELECT NewMyEstartChild.yordob, NewMyEstartChild.firstname, NewMyEstartChild.surname, NewMyEstartChild.postcode
FROM NewMyEstartChild INNER JOIN For2003 ON (NewMyEstartChild.postcode = For2003.POSTCODE) AND (NewMyEstartChild.yordob = For2003.MyDOB) AND (NewMyEstartChild.Firstname = For2003.Firstname);
In last part of this query (NewMyEstartChild.Firstname = For2003.Firstname); How can I get the name of children whose firstname's letter is similar.
Thank you
Viral
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Nov 15, 2005
My problem is this:
I have a large table with about (8000+) records and a smaller table (2000+) records.
The large table has been exported from an ACT! database.
The smaller table has 4 fields that i need to add to the larger table, and then i need to import the updated records back into the Act! database.
I created a simple select query and matched the tables with the only 2 criteria that match the 2 tables, this was "Company" and "PostCode".
This should have been ok, but instead of updating 2000+ records it only updated 1000. The reason for this is because some of the company names weren’t an exact match, "company ltd" and "company limited" etc.
If i just linked "postcode" to "postcode" there are quite a few different companies that have the same postcode.
Is there a way of trying to match just the first 5 characters of the company name but leaving the "company" field intact?
Or is there a different way to go about this?
Thanks
Darren
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May 9, 2006
Im trying to work something out on Access at the moment to score some brownie points with my boss and am hoping someone will be able to help me. Im relatively confident about using access but when it comes to tricky queries i get a bit confused. Basically my situation is that i need to do some matching. Using a PO number and a unique ID and updating a column in one of my files with the unique ID. I have done it this way so far....
Linked the the two files together and matched them on the PO number and then updated the field with the ID where they matched. This seems to work ok, but the problem is that about 10 of the PO numbers contain between 2 to 6 different ID's. Therefor how can i make it so that if there is a PO number 6 times in the file it will match with all the ID's. I dont think that this is to hard to do, but each line has a different cost and they have to be matched to the write one. The problem with this is the cost is normally different as it flucuates with the exchange rate. I can only think that the best way to do this is to use a function that looks at the cost and if its say $20.00 more or less then assume its that. But have no idea how to implement it.
Does that make sense? Is it likely that its going to be easy to do. Im relatively ok with SQL if it would be easier to use that.
If anyone has any suggestions it would be greatly appreciated...
Thanks :)
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Jun 19, 2007
Hi All,
Wondering if you can help I have a table called "example" which has field "a" "b" "c" "d"...
I then create another table called "importtable" with field "a" (imported in from Excel)...
I would then like to create a query which matches any and shows all the records which I imported in from Excel to my current table called "example" I looked at joining via "relationships" using a Select Query but it doesn't quite show what I'm after...
Should add I would like Field "a" in both tables to show but only if the number exists in the "importtable" if not then don't show..
Any tips :confused:
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Aug 6, 2007
We have two databases that I am tryin to match it one variable, we get it to to match and take from the first database and enter it in the second but I was wondering how I can get a report on the ones that didnt match. Im sorry if this is a simplistic problem but I am kind of new to Access and didnt know where else to turn to help.
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Oct 24, 2007
I have two tables that have fields set to a text so that the ClientID is their name.
When I query, my queries don't take into account the case. So "K Smith" is the same as "K SMITH" as "k sMIth"
I am trying to write an unmatched query between two tables based on this ClientID but it will turn up no unmatched because it is not taking into account the case.
Any suggestions on how to match the cases, othere then changing the table?
Thanks.
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May 3, 2005
Hi. I am in the process of loading nursing license numbers into my database. The spreadsheet that I am importing from does not use the exact same names as the ones in my database, i.e. Smith, Deb in my database is Smith, Debora in the spreadsheet and I can't figure out the code or procedure to use to tell the database that these names are actually for the same record. Is it possible to do this and if so, how?
Thank you!
KellyJo
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Jan 7, 2007
Many have had questions on how to use this for their own purposes.
Link to the original post:
http://www.access-programmers.co.uk/forums/showthread.php?t=103279
Download at: http://www.kdkeys.net/forums/thread/6450.aspx
Here is how you can use it - I provide this example:
Tables and queries can be created in the MDE database.
Create a table with known good reference strings. I created this one - REF_LIST.
It has one field, REF_STRING (Text) with a length of 50, and indexed (No Duplicates). The field length can be set to a length that suits your requirements.
This is the content:
REF_STRING
Claw Hammer
Cold Chisel
Monkey Wrench
Nail Gun
Create another table with strings to match. I created this one - TEST_LIST.
It has one field, TEST_STRING (Text) with a length of 50, and indexed (Either No Duplicates or Duplicates Ok depending on the data). The field length can be set to a length that suits your requirements.
This is the content:
TEST_STRING
Claw Hamer
Claw Hammr
Clew Hammer
Clw Hammer
Cold Chisil
Cold Chisle
Cold Chissel
Cole Chisel
Monkey Wrnech
Monkie Wrench
Monky Rench
Nail Gn
Nail Gunn
Naill Gun
Nial Gun
Then create another table for the results. I created this one - RESULTS.
It has four fields, REF_STRING (same properties as in table REF_LIST), TEST_STRING (same properties as in table TEST_LIST), MATCH_VALU (Single, Fixed, 2 decimal places), and GOOD_MATCH (True/False).
This is the content from the results of the Match_Lists query.
REF_STRINGTEST_STRINGMATCH_VALUGOOD_MATCH
Nail GunNial Gun0.92No
Monkey WrenchMonky Rench0.94No
Monkey WrenchMonkie Wrench0.94No
Claw HammerClew Hammer0.94No
Cold ChiselCold Chisle0.94No
Cold ChiselCold Chisil0.94No
Cold ChiselCole Chisel0.94No
Nail GunNail Gn0.95No
Monkey WrenchMonkey Wrnech0.95No
Nail GunNail Gunn0.96No
Nail GunNaill Gun0.96No
Claw HammerClaw Hamer0.96No
Claw HammerClaw Hammr0.96No
Claw HammerClw Hammer0.96No
Cold ChiselCold Chissel0.97No
SQL from the Match_Lists query:
INSERT INTO RESULTS ( REF_STRING, TEST_STRING, MATCH_VALU )
SELECT REF_LIST.REF_STRING, TEST_LIST.TEST_STRING, IsSimilar([REF_STRING],[TEST_STRING]) AS Expr1
FROM REF_LIST, TEST_LIST
WHERE (((IsSimilar([REF_STRING],[TEST_STRING]))>0.79));
Using this example you can populate the two tables, REF_LIST and TEST_LIST with strings that you need to compare and run the Match_Lists query.
The GOOD_MATCH field in the RESULTS table is for you or another human to determine if anything questionable is a good match for your purposes.
If it is found that any match with a value of at least .95 is a good match then an update query could be created to update the GOOD_MATCH field with true for all those with a value of >= .95.
Then a select query could be created to look at those matches that do not have a GOOD_MATCH to determine if they may be good matches.
Naturally the two tables may need a unique ID for the strings for better tracking and comparing.
If so, create them and have them appended to the RESULTS table as well in the Match_Lists query.
OpnSeason
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May 4, 2007
I have three tables: tblProducts1, tblProducts2 and tblProductSales.tblProducts1Code CostABC 20BVC 35ABC 30tblProducts2Code CostABC 10BVC 55ABC 20tblProductSalesCode RevABC 70BVC 25ABC 20BVC 15DCC 33I want to produce a query that looks like this:Code Rev Cost ProfitABC 90 80 10BVC 40 90 -50DCC 33 0 33How can I do this?Thanks,Jon
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Oct 21, 2007
Hi,I have two tables with these set of data:Table1Filed1 Field21000 A1001 B1002 C1003 D1004 ETable2Filed1 Field21000 A1002 C1003 D1005 F1006 GI need to create 3 Tables with following out put.1. Data that are common to both Table1 & Table22. Data that are in Table1 but do no exist in Table23. Data that are in Table2 but do not exist in Table1 Can anyone help me to find the answer please.CheersBud
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Aug 6, 2005
I have a database called LettersDatabase this databse holds all the letters that have been made including the path to the doc. I use SSN to ID the letters to customers on the Contacts Database.
Contacts database also uses the SSN to id the contacts
I have a form that creates new letters for customers in this form I have listbox that queries the LettersDatabase for all matching records based on the forms contact SSN to see how many letters have been made for that customer.
The problem is that my listbox only shows the first record matching that SSN but there are more records in that LettersDatabase with the same SSN that I need to have diplayed on the listbox as well.
I may be writing the query incorrectly.
Here what I have for the query on the listbox
Like[Forms]![LetterMaker]![txtSSN]
I try adding (&"*") to the end of the query but that does not help.
If anyone out there has the solution to this problem it would be greatly appreciated
Thank you
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Feb 27, 2006
Hi can anyone please help me out. How can I delete records from one table, where matching in a second table?
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Nov 13, 2006
In a database I have two tables, one is linked to an excel sheet (our customers order) and the other is created via a "make-table query" from our business system.
In both tables I have the customers part numbers and neither contain a primary key.
What I need to do is compare the part numbers in both tables to find if a part number is present in the order but not in our business system.
I just cannot figure out how to do this.
Any ideas are greatly appreciated
/twallstr
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Jul 8, 2005
Hello,
I am new to Access and have a question in regards to the combo box function. I have it setup I think correctly but the problem I have is how its storing the data.
What I have done is I have a Table that I created with a field that has set responses that someone can pick from when using the forms to put in data. I then have the combo box to store the answer into another field in that same table. What is happening is when a answer is selected and stored into the seperate field it only puts in the answer field a number.
IE
My Options are:
Day 1
Day 2
Day 3
Day 4
If someone to use the pull down menu and choose Day 1 it would put a 1 for their answer. I would like to see if there is a way to where if you chose Day 1 for an option it would put the name in the answer field. I hope that I am explaining this correctly. Any help would be greatly appreciated.
Thanks
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