Calculating transactions by time

Here's my problem, I have customer transaction data that shows deposits and
withdrawals for a month. My data includes the customer ID, type of trans,
date of trans, time of trans and amount. I am trying to come up with a way
to count the number of times a customer makes a deposit then immediately
makes a withdrawal. Obviously this will occur on the same date and within a
minute or less of the deposit. I can pull a query showing the two relevent
transactions together in a table but how do I count the number of
occurrences. Any help is appreciated. Thanks!

SELECT COUNT()
Look it up in Help.
-- Dorian
"Give someone a fish and they eat for a day; teach someone to fish and they
eat for a lifetime".


"sabunim" wrote:

Here's my problem, I have customer transaction data that shows deposits and
withdrawals for a month. My data includes the customer ID, type of trans,
date of trans, time of trans and amount. I am trying to come up with a way
to count the number of times a customer makes a deposit then immediately
makes a withdrawal. Obviously this will occur on the same date and within a
minute or less of the deposit. I can pull a query showing the two relevent
transactions together in a table but how do I count the number of
occurrences. Any help is appreciated. Thanks!

Have you checked to see if the Totals query can do the calculating you need?
Try the Count aggregation...

Regards

Jeff Boyce
Microsoft Access MVP

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does not constitute endorsement thereof.

Any code or pseudocode included in this post is offered "as is", with no
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possible/necessary.

"sabunim" wrote in message
...
Here's my problem, I have customer transaction data that shows deposits
and
withdrawals for a month. My data includes the customer ID, type of trans,
date of trans, time of trans and amount. I am trying to come up with a
way
to count the number of times a customer makes a deposit then immediately
makes a withdrawal. Obviously this will occur on the same date and within
a
minute or less of the deposit. I can pull a query showing the two
relevent
transactions together in a table but how do I count the number of
occurrences. Any help is appreciated. Thanks!

You'll need to join two instances of the table (CurrentAccounts below) on
the account holder being the same (same AccountNumber), the transaction's not
being the same transaction (different TransactionID), one being a deposit
(Credit 0), the other a withdrawal (Debit 0) and the transaction times
being close (5 minutes or less in the example below)

SELECT A1.AccountNumber, COUNT(*) AS ImmediateWithdrawals
FROM CurrentAccounts As A1, CurrentAccounts AS A2
WHERE A1.AccountNumber = A2.Accountnumber
AND A1.Credit 0 AND A2.Debit 0
AND A1.TransactionID A2.TransactionID
AND DATEDIFF("n",A1.TransactionDate+A1.TransactionTime ,
A2.TransactionDate+A2.TransactionTime) BETWEEN 0 AND 5
GROUP BY A1.AccountNumber;

Bear in mind that if one deposit and two withdrawals are made within a 5
minute period this would count as two occurrences, not one.

Ken Sheridan
Stafford, England

sabunim wrote:
Here's my problem, I have customer transaction data that shows deposits and
withdrawals for a month. My data includes the customer ID, type of trans,
date of trans, time of trans and amount. I am trying to come up with a way
to count the number of times a customer makes a deposit then immediately
makes a withdrawal. Obviously this will occur on the same date and within a
minute or less of the deposit. I can pull a query showing the two relevent
transactions together in a table but how do I count the number of
occurrences. Any help is appreciated. Thanks!

--
Message posted via AccessMonster.com
http://www.accessmonster.com/Uwe/For...ccess/201004/1

Excellent! I followed your thought process, tweaked it a bit and got it work
for me. Thank you!

"KenSheridan via AccessMonster.com" wrote:

You'll need to join two instances of the table (CurrentAccounts below) on
the account holder being the same (same AccountNumber), the transaction's not
being the same transaction (different TransactionID), one being a deposit
(Credit 0), the other a withdrawal (Debit 0) and the transaction times
being close (5 minutes or less in the example below)

SELECT A1.AccountNumber, COUNT(*) AS ImmediateWithdrawals
FROM CurrentAccounts As A1, CurrentAccounts AS A2
WHERE A1.AccountNumber = A2.Accountnumber
AND A1.Credit 0 AND A2.Debit 0
AND A1.TransactionID A2.TransactionID
AND DATEDIFF("n",A1.TransactionDate+A1.TransactionTime ,
A2.TransactionDate+A2.TransactionTime) BETWEEN 0 AND 5
GROUP BY A1.AccountNumber;

Bear in mind that if one deposit and two withdrawals are made within a 5
minute period this would count as two occurrences, not one.

Ken Sheridan
Stafford, England

sabunim wrote:
Here's my problem, I have customer transaction data that shows deposits and
withdrawals for a month. My data includes the customer ID, type of trans,
date of trans, time of trans and amount. I am trying to come up with a way
to count the number of times a customer makes a deposit then immediately
makes a withdrawal. Obviously this will occur on the same date and within a
minute or less of the deposit. I can pull a query showing the two relevent
transactions together in a table but how do I count the number of
occurrences. Any help is appreciated. Thanks!

--
Message posted via AccessMonster.com
http://www.accessmonster.com/Uwe/For...ccess/201004/1

.