Comparing Two Date Periods For Overlapping

Nov 9, 2006

hi guys,

i have a booking table which has the following columns...

booking
-------------------------------------------
dCheckin (format 11/9/2006 12:00:00 AM)
dCheckout (format 11/11/2006 12:00:00 AM)

when a new booking is entered, we want to make sure that the period entered does not conflict with an existing record.

not sure how to go about building the query required. any help would be greatly appreciated.

mike

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Need SQL For Finding Gaps Comparing Two Sets Of Periods

Feb 22, 2008

Hi all,
I have two tables - Planning and Appointments:

Planning - contains a list of planned items. Used to define boundaries for a work day and defines based on type what can be done for each item.
Id,
TypeId - the type of the planned items

BeginTime DateTime - begin date and time of the planned item
EndTime DateTime - end date and time for the planned item

In the Planning table we can have as many records per day as we need:

1, First Meeting, 1 Jan 2008 09:00, 1 Jan 2008 11:00
2, First Meeting, 1 Jan 2008 11:00, 1 Jan 2008 12:00
3, First Meeting, 1 Jan 2008 13:00, 1 Jan 2008 15:00
4, First Meeting, 1 Jan 2008 15:00, 1 Jan 2008 18:00

Appointments - contanis a list with appointments
Id,

BeginTime DateTime
EndTime DateTime


1, 1 Jan 2008 09:00, 1 Jan 2008 09:30
2, 1 Jan 2008 10:00, 1 Jan 2008 11:00
3, 1 Jan 2008 11:00, 1 Jan 2008 11:30
4, 1 Jan 2008 14:00, 1 Jan 2008 15:30

What is needed?
What I need is to a find a way to compare the planned items with the appointments and to return all the periods for which a planned time exists:

Free planned time:
1, 1 Jan 2008 09:30, 1 Jan 2008 10:002, 1 Jan 2008 11:30, 1 Jan 2008 12:00
3, 1 Jan 2008 13:00, 1 Jan 2008 14:00
4, 1 Jan 2008 15:30, 1 Jan 2008 18:00

So, having two multitudes of periods,where the one specifies the planning templates and the other real used time, I need to find all the periods which can be used for another appointments.
I've tried several aproaches, but I always faced performance problems.

Thanks in advance.

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Date Periods

Jun 20, 2007

Hi, this is my first post here, i'm working on a view wich I have to display the results by period.
1st period - Current month
2nd period - Last month
3rd period - Month before last
and so on.

How can I achieve this? of course I have a column wich has the date I want to use, I was thinking on semthing like:

case when DATEDIFF(M, TRXDATE, getdate()) <= 0 then ammount END as Period1
(TRXDATE and ammount are columns on my table)

Any ideas? would this work?

Thanks for your replies

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How To Compare Date Periods ?

Oct 10, 2005

Hi,
I need to compare 2 periods (start date / end date) in order to find out if the first period overlaps or in included in the second period.

any idea ???

thanks

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Date Overlapping

Oct 4, 2006

i have a table containing following dataeffdate termdate uid----------- ----------- -----------1 2 13 4 25 8 37 9 411 12 512 13 63 6 75 9 8i need to replace all the overlapping records with one recordsuch that resultant table shud look likeeffdate termdate uid1 2 111 13 23 9 3Thanks

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Number Of 'Periods' In A Date Range

Feb 10, 2006

Guys
Date brain killer - I have a startdate and enddate and need, for a given period length in months, to identify the number
of periods betwen the startdate and enddate
so for example

DECLARE @Periods TABLE
(
StartDate datetime,
Enddate datetime,
NumberOfMonthsInPeriod INT ,
TotPeriodsINT
)

-- Initial data
insert @Periods
(
StartDate ,
Enddate ,
NumberOfMonthsInPeriod ,
TotPeriods-- for this illustration, initialised to 0 but need to be UPDATEd as per detail below
)

select
'30-Sep-2005',
'10-Apr-2009',
1 -- 1 month period
0
union all
select
'30-Sep-2005',
'10-Apr-2009',
3 -- 3 month period
0
union all
select
'30-Sep-2005',
'10-Apr-2009',
6 -- 6 month period
0

The following rules regarding periods apply
Each 1 (NumberOfMonthsInPeriod) month period is as would be expected ie
01-Jan - 31 Jan
01-Feb - 28-Feb (ie 1st March - 1 day which would deal with leap years - dateadd(...)
and so on to December

Each 3 (NumberOfMonthsInPeriod) month period is one of the following 'bands' per year
01-Jan - 31-Mar
01-Apr - 30-Jun
01-Jul - 30-Sep
01-Oct - 31-Dec

Each 6 (NumberOfMonthsInPeriod) month period is one of the following
01-Jan - 30-Jun
01-Jul - 31-Dec

I need to derive TotPeriods as follows:

For the row where NumberOfMonthsInPeriod = 1, the first period ie the one the start date falls within is 01-Sep-2005 to 30-Sep-2005, second is 01-Oct-2005 - 31-Oct-2005 and so on until
last period ie the one the end datye falls within is 01-Apr-2009 - 30-Apr-2009, a TotPeriods value of 44

For the row where NumberOfMonthsInPeriod = 3, first period is 01-Jul-2005 to 30-Sep-2005, second is 01-Oct-2005 - 31-Dec-2005 and so on until
last period is 01-Apr-2009 - 30-Jun-2009, a TotPeriods value of 16

For the row where NumberOfMonthsInPeriod = 6, first period is 01-Jul-2005 to 31-Dec-2005, second is 01-Jan-2006 - 30-Jun-2006 and so on until
last period is 01-Jan-2009 - 30-Jun-2009, a TotPeriods value of 8

Hope this is clear and thanks in advance

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Oct 25, 2005

I've gone cold here. Dunno if I've had too little coffee - as I'm currently drinking some seriously wicked green tea - or whether my brain has locked down from yesterdays "bad eggs for lunch" experience.

Anyway... I have database with a customer, for each customer is a related history table with assigned consultant.

The assigned consultant table has information on consultant id, name, the start date of his assignment and the end date.

I need to find all customers that currently have (or have had) two or more consultants actively assigned. In other words, I need to see if the start/end times overlap.

At my current state, I'm just done.. i can't maintain the perspective... how do I do this?

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Oct 7, 2014

How can I compute the biweekly periods when a date is passed in as a parameter, for example if the user enters 9/12/2014 I should get:

Friday /2nd half9/12/2014
Saturday9/13/2014
Sunday9/14/2014
Monday9/15/2014
Tuesday9/16/2014
Wednesday9/17/2014
Thursday9/18/2014
Friday/1st half 9/19/2014
Friday/2nd half9/19/2014
Saturday9/20/2014
Sunday9/21/2014
Monday9/22/2014
Tuesday9/23/2014
Wednesday 9/24/2014
Thursday9/25/2014
Friday/1st half 9/26/2014

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Jan 21, 2014

I'm trying to create a cte to return a list of lots and every period between the first and last transaction date for each lot. I've gotten this far:

SELECTIntLotKey
,DATEPART(YYYY, StartDate)StartYear
,DATEPART(MM, StartDate)StartPeriod
,DATEPART(YYYY, EndDate)EndYear
,DATEPART(MM, EndDate)EndPeriod

[Code] ....

This gives me the following results:

IntLotKeyStartYearStartPeriodEndYearEndPeriod
271532013120135
28468201312201312
2846920131201312
2847020131201312
28472201312201312
593022013120131
593032013120131

Now what I need is something that looks like this:

LotKeyYearPeriod
2715320131
2715320132
2715320133
2715320134
2715320135

[Code] .....

Some lots may not have any transactions for some of the periods between the start and end dates but I need to report every period between the start and end period for each lot. I have a period table that I thought I could use but haven't come up with a way to get the results I'm after.

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Aug 20, 2015

Question: How to determine if a date value was between one of the date periods that appear in multiple rows?

Background: We have a table of "license valid" periods, wherein each license can have one or more rows.  (As you know, a driver's license can be started, expired, renewed, suspended, reinstated, revoked, etc.)  Instead of of having a license activity table--from which valid license periods could be extrapolated--we store just the periods for which a license was valid.

My task is to take a list of licenses and specific dates and determine if each license was valid as of that date, returning either true or false.  What is the best way to accomplish this?

DECLARE @ValidityInQuestion TABLE (
LicenseID int
, DateValidityInQuestion date);

DECLARE @LicenseValidPeriods TABLE (
LicenseID int
, BeginDate date
, EndDate date);

[Code] ...

 How then do I query both tables in order to get the same result that results from the following query?

SELECT
12345 AS LicenseID
, '2015-01-15' AS DateValidityInQuestion
, 1 AS LicenseActive
UNION
SELECT
67890
, '2015-02-04'
, 0;

I assume I need to join on the LicenseID columns, but my understanding stops there.

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Apr 4, 2007

I'm new to sql. Can someone help me to write a script to select overlapping start dates for each client records.
For example:
Clientid 1 have 3 episode as below(I only want to see the first two records with overlapping start date records)

clientid StratDate EndDate
1 2004-01-01 2004-05-01
1 2004-04-01 2004-05-01
1 2005-04-01 2006-01-01


Table create

CREATE TABLE [dbo].[TABLE_TEST] (
[Client_ID] [varchar] (15) COLLATE Latin1_General_CI_AS NULL ,
[STARTDate] [datetime] NULL ,
[ENDDate] [datetime] NULL ,
)
GO

INSERT

INSERT INTO [TABLE_TEST]([Trust_Wide_ID], [STARTDate], [ENDDate])
VALUES('1','2004-01-01','2004-05-01')

INSERT INTO [TABLE_TEST]([Trust_Wide_ID], [STARTDate], [ENDDate])
VALUES('1','2004-04-01','2004-05-01')

INSERT INTO [TABLE_TEST]([Trust_Wide_ID], [STARTDate], [ENDDate])
VALUES('1','2005-04-01','2006-04-01')

INSERT INTO [TABLE_TEST]([Trust_Wide_ID], [STARTDate], [ENDDate])
VALUES('2','2004-06-01','2004-07-01')

INSERT INTO [TABLE_TEST]([Trust_Wide_ID], [STARTDate], [ENDDate])
VALUES('3','2004-09-01','2004-010-01')
Go

Thanks for help

Husman

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Oct 23, 2007

I need to identify time spans where members identified as having a condition have NOT had any of 5 specified services in the past 12 months. I have a table (DiabStrata) that identifies time frames for which my data shows a member as having the condition, and I have 5 separate tables with the dates of the relevant services.

I can easily identify when a member hasn't had the service at all, or is lacking it at the start or end of the time frame for which they have the condition, but I'm hitting a wall on how to deal with gaps between the minimum and maximum identification dates.





Code Block

create table dbo.DiabStrata(memberid char(11),Strat tinyint, StratStart datetime, StratEnd datetime)




create table dbo.hba1c(memberid char(11),dos datetime)




insert DiabStrata(
select '1',1,'20060101','20070302'
union
select '1',1,'20070803','20080804'
union
select '2',1,'20020101','20080503')


insert hba1c(

select '1','20060301'

union

select '1','20070301'

union

select '2','20050101')






--Missed Service
Begin
select * into #eval from DiabStrata where strat=1

delete #eval
from #eval left join hba1c on #eval.memberid=hba1c.memberid where hba1c.memberid is null
--repeat for other indicators

update e
set stratstart=min(dos)
from #eval e join hba1c on e.memberid=hba1c.memberid
having min(dos)>stratstart

update e
set stratend=max(dos)+365
from #eval e join hba1c on e.memberid=hba1c.memberid
having max(dos)+365<stratend

delete from #eval where stratstart>stratend
--repeat for other indicators
Desired output is into DiabStrata with a strat of 2 for the time frame for which they have strat 1 but do not have all 5 services within the prior 365 days.
MID Strat StartStrat EndStrat
1 2 1/1/06 - 2/28/06
1 2 3/2/08 - 8/4/08
2 2 1/1/02 - 12/31/04
2 2 1/2/06 - 5/3/08

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Aug 18, 2015

I have a table with multiple rows per staff person.  Each of these rows has staff_id, start_date, and end_date.  Per staff, if any start_date comes between the start_date and end_date of a different row, or if any end_date comes between the start_date and end_date of a different row, then I have to flag these records as being identical. 

How can I do this?  I have tried doing a Cross Apply because I thought that would do Cartesian product (comparing every row), and I've also tried temp tables. But I haven't gotten either of these to work. Here is some dummy data:

if exists (select * from tempdb.dbo.sysobjects o where o.xtype in ('U') and o.id = object_id(N'tempdb..#staff_records')
) DROP TABLE #staff_records;
create table #staff_records
(
staff_id varchar(max),

[Code] ....

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May 12, 2015

Given the data below, I have a couple needs:

1) Query to determine if any date ranges overlap (regardless of category, e.g., row ids 6 & 7 below)

2) Query to determine if any date ranges of the same category overlap

declare @t1 table (id int primary key, category int, start_date datetime, end_date datetime)
insert @t1 select 1, 1, '1/1/2015 12:00:00 AM', '1/15/2015 12:59:59 PM'
insert @t1 select 2, 1, '1/16/2015 12:00:00 AM', '1/31/2015 12:59:59 PM'
insert @t1 select 3, 1, '2/1/2015 12:00:00 AM', '2/15/2015 12:59:59 PM'
insert @t1 select 4, 1, '2/16/2015 12:00:00 AM', '2/28/2015 12:59:59 PM'
insert @t1 select 5, 1, '3/1/2015 12:00:00 AM', '3/15/2015 12:59:59 PM'

[code]....

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Jun 6, 2012

I need to compare the contents of a column.

I have a table with 1 column. Below are the sample contents..

DateInterval
2012-06-01 00:30:00.000
2012-06-01 01:00:00.000
2012-06-01 01:30:00.000
2012-06-01 02:00:00.000
2012-06-01 02:30:00.000

[code]....

as you can see, the records have a 30minutes time interval. i need to create a query to know if there are missing records in the table. so basically the result should be this:

DateInterval
2012-06-01 18:00:00.000
2012-06-01 20:30:00.000

if it is not doable, we can get the nearest record of all missing records like this:

DateInterval
2012-06-01 17:30:00.000
2012-06-01 20:00:00.000

or this:

DateInterval
2012-06-01 18:30:00.000
2012-06-01 21:00:00.000

or this:

DateInterval
2012-06-01 17:30:00.000
2012-06-01 18:30:00.000
2012-06-01 20:00:00.000
2012-06-01 21:00:00.000

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Jun 13, 2008

Hi,
I have a table with 3 columns inside
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- user_id (varchar)
- login_date (date)
it is  a many-to-many relationship table that record login date of users
 
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SELECT COUNT(*)
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That's works
 
But the problem is I want to split the result to
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please help
 
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Mar 18, 2004

I have two sets of dates to work with. One is an existing booking with a start and an end date. The other is a new booking with a start and an end date. I want to compare them and calculate how much overlap there is. If the overlap is over a certain amount (say 4 days), then I want to flag the user.

Is there any thing I can use in terms of a SQL query to assist in this comparison? I'm relatively new to SQL so I'm not entirely sure what functions and keywords are available to me to make this comparison.

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Dec 18, 2013

Is there a performance impact (if so, how great is it) when comparing a date to a datetime data type?

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This has only come about because I'm considering changing the data type used in my standard calendar script and this popped in to my head.

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Jan 28, 2014

I have to write a where condition where i need to compare string with date

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i.e., 201401011 or 201401012

So I need to chop off last character before using them in WHERE condition.

Now I need to write a where condition like [if todays date is in between fromdate and todate columns then return rows.

if FROMDATE column is null it should take minimum date 1900/01/01 if TODATE is null then date should be 9999/01/01

The query i wrote is

select * from Table where ISNULL(SUBSTRING(VALIDTO,1,8),'19000101') > = getdate()

AND ISNULL(SUBSTRING(VALIDTO,1,8),'99991231') < convert(varchar, getdate(), 112)

but it shows no data...

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Jan 31, 2014

how to write condition for self table year records, such 2012 name and acctno match with 2013 name and acctno then total, provided below,

create table #tab1 (MasterKey int, AcctNo varchar(12),name varchar(25), SumaofShares numeric, request_dat datetime )
--drop table #tab1
insert into #tab1 values (1000, 100,'Tom', 2500, '10/01/2012')
insert into #tab1 values (1001, 101,'Bat', 1550, '08/11/2012')
insert into #tab1 values (1002, 102,'Kit', 1600, '06/12/2012')
insert into #tab1 values (1003, 103,'Vat', 1750, '04/15/2012')
insert into #tab1 values (1010, 104,'Sim',200, '04/21/2013')

[code]....

i would like to get 4 columns output

how to get sumofshares (#tab1) and TotalOutStanding(#tab2) summ up with these values,

MasterKey (#tab1) and IssueKey (#tab2) are like primary key and foreign key

so the request is

need to calculate, sumofshares (#tab1) and TotalOutStanding(#tab2) as below

1)ShareBenefist = U and year( request_dat) in (2012 , 2103) and (Name for 2012 should match with 2013 name and 2012 Acctno should match with 2013 accounno) in (#tab1)
then '2012 and 2013 accts UN Veriverted'
2)ShareBenefist = V and year( request_dat) in (2012 , 2103) and (Name for 2012 should match with 2013 name and 2012 Acctno should match with 2013 accounno) in (#tab1)
then '2012 and 2013 accts Veriverted'
3)ShareBenefist = N and year( request_dat) in (2012 , 2103) and (Name for 2012 should match with 2013 name and 2012 Acctno should match with 2013 accounno) in (#tab1)
then '2012 and 2013 accts NONVERT'
4)year( request_dat) =2102 and Name and Acctno not match with 2013 account name and acctno (#tab1)
then '2012 last year accounts'
5)year( request_dat) = 2013 and Name and Acctno not match with 2013 account name and acctno (#tab1)
then '2012 This year accounts'

for ex 1) the below accounts in #tab1 has both 2012 and 2013 and acctno same in both years and name is same in both years so it is condired as

insert into #tab1 values (1012, 100,'Tom',800, '08/22/2013')

for ex 2)

insert into #tab1 values (1013, 101,'Bat',550, '09/15/2013')

for ex 4) 2012 records there is not match acctno and name in 2013 recods

insert into #tab1 values (1002, 102,'Kit', 1600, '06/12/2012')

for ex 5) 2013 records there is no match of name and acct no with 2012 records

insert into #tab1 values (1010, 104,'Sim',200, '04/21/2013')
insert into #tab1 values (1014, 100,'Pet',200, '02/21/2013')
insert into #tab1 values (1016, 110,'Sun',800, '03/22/2013')
insert into #tab1 values (1017, 111,'Bet',550, '12/15/2013')

Expected Results (just for format)

AcctTypeDescription,SumofShares, OtotalutStand
'2012 and 2013 accts UN Veriverted',2700,234
'2012 and 2013 accts Veriverted' ,2890,234
'2012 and 2013 accts NONVERT' ,4533,325
'2012 last year accounts' ,2334,567
'2012 This year accounts' ,2222,877

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Condition in Where clause:

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a week = 5 days starting from Monday to Friday
a day starts at 8AM and ends at 6PM (so a day is 10 hours)

You can probably calculate this manually but what about summer to winter hour and the month Februari when it has 29 days etc.

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Jan 10, 2008

There are three tables Loans, CDs and Account.

I want to create a report based on above three tables
It looks like as follows;
















Program Summary

Yesterday/Current
MTD
Previous Month
YTD




Amount
Number
Amount
Number
Amount
Number
Amount
Number

Portfolio












Loans Commenced

$
#
$
#
$
#
$
#


Loans Closed

$
#
$
#
$
#
$
#


CDs Commenced

$
#
$
#
$
#
$
#


CDs Closed

$
#
$
#
$
#
$
#















Loan table - Amount, State
CD - Amount, State
Account - CommencedOnDate(date time), closeondate(date time)

Yesterday - Loans/CDs started yesterday(calander date..not last 24 hours)
MTD - " " First of this month to yesterday
Previous Month - " " during previous month
YTD - " " Loans/CDs started from 1 of this year to yesterday

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Based on this I have to create a report. But this time format seems to be really complex.
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Apr 24, 2007

I have the following table structure

CREATE TABLE [dbo].[QDisc](
[Id] [int] NOT NULL,
[MinVal] [int] NOT NULL,
[MaxVal] [int] NOT NULL,
[PerVal] [int] NOT NULL,
CONSTRAINT [PK_QDisc] PRIMARY KEY CLUSTERED
(
[Id] ASC
)WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]

I need to be able to select unique overlapping sets of data based on the minval and maxval.

Simple Example
minval maxval
5 15
16 25
10 20

query would produce
minval maxval
5 10
11 15
16 20
21 25

More Complex example
minval maxval
5 15
16 25
10 20
7 7
1 100

query would produce
minval maxval
1 5
6 6
7 7
8 10
11 15
16 20
21 25
26 100

Extra points if anyone can do this without SP and cursor but I'd be satisfied if someone supplied it that way.

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CURRENT_DAY FROM_DATE TO_DATE

1 1899-12-20 09:00:00.000 1899-12-20 10:00:00.000

1 1899-12-20 09:50:00.000 1899-12-20 11:00:00.000

1 1899-12-20 12:00:00.000 1899-12-20 02:00:00.000

I need the count of records that overlap with each other. [OR]

1 if there is overlap, 0 if there is no overlap.

I am new to sql, thanks for any help.

Yog

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Mar 28, 2014

I have a Column in my data that gives a financial period value in the YYYYMM format. i.e. an asset was re-valued in a particular period for example 201301. I need to find out the number(count) of periods(months) between another given period for example current period (201403) and the period provided in the table i.e. 201301.

Is this possible in the SQL Database?

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Apr 11, 2008

Your help is greatly appreciated. How do you query each one of the following:

1) SELECT FieldValue WHERE DateTime is from 8:30AM - 12:00PM and 6:00PM - 9:30PM on Mondays thru Fridays (i.e. exclude Sat & Sun) for the whole month of January 2008.

2) SELECT FieldValue WHERE DateTime is from 9:30PM - 8:30AM on Mondays thru Fridays, AND ALL-DAY on Saturdays & Sundays for the whole month of January 2008.

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Aug 17, 2007

Hi there.

I am working on a set of reports where I am summing/averaging data elements based on what period they are in. For example, the report output should look something like this:









Period
Sum

May '07
41

April '07
14

Q2 '07
55

March '07
36

February '07
28

January '07
22

Q1 '07
86

June '07
N/A

YTD '07
141

December '06
33

November '06
27

October '06
42

Q4 '06
102

September '06
58

August '06
84

July '06
52

Q3 '06
194

June '06
40

May '06
41

April '06
14

Q2 '06
95

March '06
67

February '06
38

January '06
N/A

Q1 '06
105

YTD '06
496


For each of the items I am summing, all I have is a datetime of when the event happened. This is a relational database (not a cube), so I am struggling with how to create the 'buckets' based on period. I think the best way is to dynamically create the buckets based on a given date. Is there a way in RS that it can do this bucketing for you?

Thanks, Mike

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