More than 4 records in 60 minute period

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More than 4 records in 60 minute period

texpic

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Points: 5885
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September 24, 2006 at 3:24 am

#92508

This seems to be a tough one because I can't figure out where to start. I'll try to simplify the example. Daily I need to look through 200,000 records in 20,000 accounts (average 10 per account). The table has three fields: AccountNumber, DateIn, Amount.

How would I query?

a) If there are more than 4 records in any consecutive 60 minute period.

b) If there are more than 4 records in any consecutive 60 minute period where the average amount of those transactions is more than $20.

I'm thinking this is an impossible feat. Thank you to anyone smart enough to figure this puzzle out.

Viewing 7 posts - 1 through 6 (of 6 total)

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Roi Assa SSChasing Mays Points: 611 More actions · Answer 1

You should try this one or at least understand the logic and try to implement your own changes. Few things:

1. I answered only on the first one, but I think it will be easy to go on to the second question.

2. You can create indexes in order to improve performance.

SET NOCOUNT ON

--8888888888888888888888888888888888888888888888888888

-- Simulate data

CREATE TABLE #Period (

AccountNumber INT,

DateIn DATETIME,

Amount INT)

INSERT #Period VALUES (1,'1/1/05 00:00',10)

INSERT #Period VALUES (1,'1/1/05 00:01',20)

INSERT #Period VALUES (1,'1/1/05 00:02',30)

INSERT #Period VALUES (1,'1/1/05 00:03',40)

INSERT #Period VALUES (1,'1/1/05 10:10',50) -- not within 60 min

INSERT #Period VALUES (2,'1/1/05 00:00',100)

INSERT #Period VALUES (2,'1/1/05 00:01',200)

INSERT #Period VALUES (2,'1/1/05 00:02',300)

INSERT #Period VALUES (2,'1/1/05 01:20',400) -- not within 60 min

INSERT #Period VALUES (3,'1/1/05 00:00',1000)

INSERT #Period VALUES (3,'1/1/05 00:01',2000)

INSERT #Period VALUES (3,'1/1/05 00:02',3000)

INSERT #Period VALUES (3,'1/1/05 10:03',4000) -- not within 60 min

INSERT #Period VALUES (4,'1/1/05 01:00',10000)

INSERT #Period VALUES (4,'1/1/05 01:01',20000)

INSERT #Period VALUES (4,'1/1/05 02:02',30000)

INSERT #Period VALUES (4,'1/1/05 03:00',40000)

-- Select data from original table

SELECT *

FROM #Period

--8888888888888888888888888888888888888888888888888888

-- starting...

-- Insert all data into temp table (with row id) ordered by date

SELECT IDENTITY(INT,1,1)AS ROW_ID, AccountNumber, DateIn, Amount

INTO #Temp_Period

FROM #Period

ORDER BY DateIn

--**************************

-- This is the query you need to run:

SELECT A.AccountNumber,

COUNT(DISTINCT A.ROW_ID) AS COUNT_ROW_ID

FROM #Temp_Period A

JOIN #Temp_Period B ON A.AccountNumber = B.AccountNumber

AND A.ROW_ID <> B.ROW_ID

AND A.DateIn BETWEEN DATEADD(HH,-1,B.DateIn) AND DATEADD(HH,1,B.DateIn)

GROUP BY A.AccountNumber

ORDER BY A.AccountNumber

--**************************

-- All data ordered by account number --> this one will help you understand the logic

SELECT *

FROM #Temp_Period

ORDER BY AccountNumber

--8888888888888888888888888888888888888888888888888888

DROP TABLE #Period

DROP TABLE #Temp_Period

Kindest Regards,

Roi Assa

Sreejith Sreedharan SSCertifiable Points: 5403 More actions · Answer 2

I hope this is what u are looking for:

Select * from

(

SELECT #Period.AccountNumber,#Period.DateIn,--#Period.Amount,

(SELECT sum(Amount) FROM #Period S

where #Period.AccountNumber = S.AccountNumber

and S.DateIn between #Period.DateIn and DateAdd(mi,60,#Period.DateIn)) as Amount,

(SELECT Count(*) FROM #Period S

where #Period.AccountNumber = S.AccountNumber

and S.DateIn between #Period.DateIn and DateAdd(mi,60,#Period.DateIn)) as Counts

FROM #Period

where

--Count greater than or equal to 4

(SELECT Count(*) FROM #Period S

where #Period.AccountNumber = S.AccountNumber

and S.DateIn between #Period.DateIn and DateAdd(mi,60,#Period.DateIn)) >= 4

&nbsp A

where Cast(A.Amount as decimal(15,2))/Cast(A.Counts as decimal(15,2)) > 20.0

texpic SSCertifiable Points: 5885 More actions · Answer 3

I goofed up:

a) If there are more than 4 records in any consecutive 60 minute period.

should be

a) If there are more than 4 records in any consecutive 60 minute period FOR THAT ACCOUNT ITSELF (looking at records on an account basis)

Sreejith, I'm getting an error when I run your query, think the smiley face may have covered some of your code?

Thanks guys (i'm still confused, this is more complicated than most stuff)

Roi Assa SSChasing Mays Points: 611 More actions · Answer 4

Roi Assa

SSChasing Mays

Points: 611

September 25, 2006 at 1:26 am

#662139

As you can see, my example will give you the exact answer you want ("GROUP BY A.AccountNumber")

Kindest Regards,

Roi Assa

texpic SSCertifiable Points: 5885 More actions · Answer 5

I changed the test data a bit. We are not looking at dollar amount in this. Account C and D had 5 records within an hour.

The result of this query is A=6, B=8, C=7, D=5. I'm not seeing how I'd know A+B did not have 5, and C+D did have 5.

Thanks again!!!

-----------------------------------------------

CREATE TABLE #Period

(AccountNumber VARCHAR(1), DateIn DATETIME, Amount INT)

INSERT #Period VALUES ('A','1/1/05 00:01',1)

INSERT #Period VALUES ('A','1/1/05 00:02',1)

INSERT #Period VALUES ('A','1/1/05 00:03',1)

INSERT #Period VALUES ('A','1/1/05 00:04',1)

INSERT #Period VALUES ('A','1/1/05 02:05',1)

INSERT #Period VALUES ('A','1/1/05 10:02',1)

INSERT #Period VALUES ('A','1/1/05 10:03',1) -- only had 4 within 60 minutes

INSERT #Period VALUES ('B','1/1/05 00:00',1)

INSERT #Period VALUES ('B','1/1/05 01:01',1)

INSERT #Period VALUES ('B','1/1/05 01:02',1)

INSERT #Period VALUES ('B','1/1/05 01:03',1)

INSERT #Period VALUES ('B','1/1/05 01:04',1)

INSERT #Period VALUES ('B','1/1/05 10:01',1)

INSERT #Period VALUES ('B','1/1/05 10:02',1) -- only had 4 within 60 minutes

INSERT #Period VALUES ('C','1/1/05 00:01',1)

INSERT #Period VALUES ('C','1/1/05 00:02',1)

INSERT #Period VALUES ('C','1/1/05 00:03',1)

INSERT #Period VALUES ('C','1/1/05 00:04',1)

INSERT #Period VALUES ('C','1/1/05 00:05',1)

INSERT #Period VALUES ('C','1/1/05 10:02',1)

INSERT #Period VALUES ('C','1/1/05 10:03',1) -- had 5 within 60 minutes, $ amt not average $20

INSERT #Period VALUES ('D','1/1/05 00:01',1)

INSERT #Period VALUES ('D','1/1/05 10:02',21)

INSERT #Period VALUES ('D','1/1/05 10:03',21)

INSERT #Period VALUES ('D','1/1/05 10:04',21)

INSERT #Period VALUES ('D','1/1/05 10:05',21)

INSERT #Period VALUES ('D','1/1/05 10:06',21)

INSERT #Period VALUES ('D','1/1/05 12:03',1) -- had 5 within 60 minutes, $ amt average $21

-- insert all data into temp table (with row id) ordered by date

SELECT

IDENTITY(INT,1,1)AS ROW_ID,

AccountNumber, DateIn, Amount

INTO #Temp_Period

FROM #Period

ORDER BY DateIn

SELECT

A.AccountNumber,

COUNT(DISTINCT A.ROW_ID) AS COUNT_ROW_ID

FROM #Temp_Period A

JOIN #Temp_Period B ON A.AccountNumber = B.AccountNumber

AND A.ROW_ID <> B.ROW_ID

AND A.DateIn BETWEEN DATEADD(HH,-1,B.DateIn) AND DATEADD(HH,1,B.DateIn)

GROUP BY A.AccountNumber

ORDER BY A.AccountNumber

DROP TABLE #Period

DROP TABLE #Temp_Period

/*

SELECT * FROM #Period

SELECT * FROM #Temp_Period ORDER BY AccountNumber

*/

Roi Assa SSChasing Mays Points: 611 More actions · Answer 6

This one will give you the result you asked for.

You should change the query to return whatever you need.

SET

NOCOUNT ON

CREATE

TABLE #Period

(

AccountNumber VARCHAR(1), DateIn DATETIME, Amount INT)

INSERT

#Period VALUES ('A','1/1/05 00:01',1)

INSERT

#Period VALUES ('A','1/1/05 00:02',1)

INSERT

#Period VALUES ('A','1/1/05 00:03',1)

INSERT

#Period VALUES ('A','1/1/05 00:04',1)

INSERT

#Period VALUES ('A','1/1/05 02:05',1)

INSERT

#Period VALUES ('A','1/1/05 10:02',1)

INSERT

#Period VALUES ('A','1/1/05 10:03',1) -- only had 4 within 60 minutes

INSERT

#Period VALUES ('B','1/1/05 00:00',1)

INSERT

#Period VALUES ('B','1/1/05 01:01',1)

INSERT

#Period VALUES ('B','1/1/05 01:02',1)

INSERT

#Period VALUES ('B','1/1/05 01:03',1)

INSERT

#Period VALUES ('B','1/1/05 01:04',1)

INSERT

#Period VALUES ('B','1/1/05 10:01',1)

INSERT

#Period VALUES ('B','1/1/05 10:02',1) -- only had 4 within 60 minutes

INSERT

#Period VALUES ('C','1/1/05 00:01',1)

INSERT

#Period VALUES ('C','1/1/05 00:02',1)

INSERT

#Period VALUES ('C','1/1/05 00:03',1)

INSERT

#Period VALUES ('C','1/1/05 00:04',1)

INSERT

#Period VALUES ('C','1/1/05 00:05',1)

INSERT

#Period VALUES ('C','1/1/05 10:02',1)

INSERT

#Period VALUES ('C','1/1/05 10:03',1) -- had 5 within 60 minutes, $ amt not average $20

INSERT

#Period VALUES ('D','1/1/05 00:01',1)

INSERT

#Period VALUES ('D','1/1/05 10:02',21)

INSERT

#Period VALUES ('D','1/1/05 10:03',21)

INSERT

#Period VALUES ('D','1/1/05 10:04',21)

INSERT

#Period VALUES ('D','1/1/05 10:05',21)

INSERT

#Period VALUES ('D','1/1/05 10:06',21)

INSERT

#Period VALUES ('D','1/1/05 12:03',1) -- had 5 within 60 minutes, $ amt average $21

-- insert all data into temp table (with row id) ordered by date

SELECT

IDENTITY

(INT,1,1)AS ROW_ID,

AccountNumber

, DateIn, Amount

INTO

#Temp_Period

FROM

#Period

ORDER

BY DateIn

SELECT

DISTINCT AccountNumber, COUNT_ROW_ID

FROM

(SELECT A.ROW_ID,

A

.AccountNumber,

COUNT(A.ROW_ID)+1 AS COUNT_ROW_ID

FROM #Temp_Period A

JOIN #Temp_Period B ON A.AccountNumber = B.AccountNumber

AND A.ROW_ID <> B.ROW_ID

AND A.DateIn BETWEEN DATEADD(HH,-1,B.DateIn) AND DATEADD(HH,1,B.DateIn)

GROUP BY A.AccountNumber, A.ROW_ID

HAVING COUNT(A.ROW_ID)+1 >= 4

) Help_Table

DROP

TABLE #Period

DROP

TABLE #Temp_Period

Kindest Regards,

Roi Assa