Transact SQL :: How To Generate Date Ranges From Given List Of Dates

Sep 10, 2015

I want generating Valid date ranges from any list of dates.

The List of Dates could be generated from the below TSQL - 

SELECT '2015-06-02' [Date] UNION ALL
SELECT '2015-06-13' UNION ALL
SELECT '2015-06-14' UNION ALL
SELECT '2015-06-15' UNION ALL
SELECT '2015-06-16' UNION ALL
SELECT '2015-06-22' UNION ALL
SELECT '2015-06-23' UNION ALL
SELECT '2015-06-24'

And the expected output should look like - 

SELECT '2015-06-02' FromDate, '2015-06-02' ToDate UNION ALL
SELECT '2015-06-13' FromDate, '2015-06-16' ToDate UNION ALL
SELECT '2015-06-22' FromDate, '2015-06-24' ToDate

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Transact SQL :: List Date Between Dates

Aug 22, 2015

i have a table like below
CREATE TABLE #Test (FromDate DATE,ToDate DATE)
insert into #Test VALUES ('2015-08-08','2015-08-11')
insert into #Test VALUES ('2015-08-13','2015-08-16')
insert into #Test VALUES ('2015-08-19','2015-08-21')
SELECT * from #Test
drop TABLE #Test

i need to display the dates as single column between from and todate.my expected result is like below

CREATE TABLE #Result (ResDate DATE)
insert into #Result VALUES ('2015-08-08')
insert into #Result VALUES ('2015-08-09')
insert into #Result VALUES ('2015-08-10')
insert into #Result VALUES ('2015-08-11')

[code]....

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Generate Dates That Are Not Found In Multiple Ranges

Apr 26, 2007

I understand how to find (generate) missing dates for the year 2006 if I have a range value like 1-1-2006 to 3-1-2006. (I'm just using 2006 for arguements sake - the needed approach starts back in 2004 or so and will extend to the current day)

Now the question that presents itself is, is there an elegant way to do this same process with an arbitrary number of date ranges per customer? There would be 1 record per range, per customer

ie:
customer, start date, end date
1 _______ 11-1-2006 : 11-17-2006
1 _______ 12-15-2006 : 12-31-2006
1 _______ 1-5-2006 : 1-31-2006


What I'd like to generate is a record per missing date in 2006, which would be:
4 records for 1-1-2006 to 1-4-2006
several records for 2-1-2006 to 10-31-2006
and then more for 11-18-2006 to 12-14-2006

As I said before, the number of ranges isn't static. It could be 1 or a dozen and could increase as time goes on. At this time, all I can see to potentially make it work in query is to do a dozen joins - which kind of sucks.

My other thought is to do specific processing per customer, per range gap, but it will be terribly slow.

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Transact SQL :: How To Generate Week Ranges From Monday To Sunday

May 28, 2015

I need to generate the week ranges like this format :

Here from date and to date would be picked up from the table but just to make you understand i have hard coded it but this is the real date which is falling inside the table. 

Note : Week should be generated from Monday to Sunday within desired date range

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Transact SQL :: How To Generate Week Ranges For A Year In 2005

Mar 22, 2011

I have to insert YEAR   WEEKNUMBER   STARTDATE   ENDDATE values to a datatable (sayweekrange), if I pass 2011 as year.

Week range starts at 2011-03-28 to 2011-04-03 (because in my database 2010 last week range ends with 2011-03-27) like this I have to generate for 52 weeks.

I want to write a stored procedure, that takes only year as parameter. with this year I have to generate week ranges and insert into my table as shown above.

How can I do this ?

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Transact SQL :: Query To Determine Overlapping Date Ranges (by Category)

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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Transact SQL :: Generate Insert With Column List And Select With Columnlist Statements

Oct 22, 2015

I had to enable identity_insert on a bunch of tables and I have already done that. Now I need to modify my insert into select * from statements to include column list names along with identity columns for select as well as insert statements. The DDL is same but they are both different databases.There are almost 100 tables that it needs to be modified. Is there a way we can generate scripts for insert and select for each individual table along with their column lists including the identity column?

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SQL Statement To Generate Customer List Whose Last Payment Date Is Jan 04

Jul 20, 2005

Hi all,I have a problem trying to generate the u/m list of customer.I am trying to generate a list of customer whoes last commence date isjan 04 to current.It is part of a billing system which the customer come in and pay fortheir season parking in carpark. They can pay for various periodshortest being 1 week.so i will have customer paying for 1 week, 1 month, 2 months or even 1year. Everytime a customer come in to pay, a new line at the incvoicewill be generated.My DB structure is as followedCustomer Table-Cust_Acc_No ----> (Primary Key)-Customer Name-Customer AddressInvoiceCust_acc_no-- Link to customer tableInvoice_no -- primary keyinvoice detailsinvoice_no -- link to invoice tablecommence_dateexpiry_dateamount_paidif i do aselect * from customer a, invoice b, invoice_details cwhere a.cust_acc_no=b.cust_acc_no andb.invoice_no=c.invoice_no andc.commence_date>1/1/04it doesnt works as it will showjohn, 1/1/04 - 31/1/04john, 1/2/04 - 29/1/04i do not want repetitive customer number just the latest commencedate.can anyone help?thanks

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How Do Order The List By Date To Show For New Dates.

Aug 2, 2007

  <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:NWHCConnectionString %>"
SelectCommand="SELECT [Title], [URL], [Date] FROM [Article] ORDER BY [Date] DESC"></asp:SqlDataSource>


<asp:Repeater id="myRepeaterUL" runat="server" DataSourceID="SqlDataSource1">
<HeaderTemplate>
<ul>
</HeaderTemplate>
<ItemTemplate>
<li><a href="<%# DataBinder.Eval(Container.DataItem, "URL") %>"><%#DataBinder.Eval(Container.DataItem, "Title")%></a><br /><%# Eval("Date") %></li>
</ItemTemplate>
<FooterTemplate>
</ul>
</FooterTemplate>
</asp:Repeater>
 This is my code above, I am trying to order them to show the four new list of news. Here is a picture, yeah its old and everybody loves pictures. see the box on the right, i want to show only four, not all of it.  

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Transact SQL :: Check If A Date Is Within A Range Of Dates?

Aug 20, 2015

Basically, I have a membership table that lists each member with an effective period, Eff_Period, that indicates a month when a member was active. So, if a member is active from Jan to Mar, there will be three rows with Eff_Periods of 201501, 201502 and 201503.

All well and good.But, a member may not necessarily have continuous months for active membership. They might have only been active for Jan, Feb and Jun. That would still give them three rows, but with noncontinuous Eff_Periods; they'd be 201501, 201502 and 201506.There is also a table that logs member activity. It has an Activity_Date that holds the date of the activity - betcha didn't see that comin'. What I'm trying to do is determine if an activity took place during a period when the member was active.

My original thought was to count how many rows a member has in the Membership table and compare that number to the number of months between the MIN(Eff_Period) and the MAX(Eff_Period). If the numbers didn't matchup, then I knew that the member had a disconnect somewhere; he became inactive, then active again. But, then I thought of the scenario I detailed above and realized that the counts could match, but still have a discontinuity.So, is there a nifty little SQL shortcut that could determine if a target month is contained within a continuous or discontinuous list of months?

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Transact SQL :: Date Difference Between Two Dates In Due And OverDue

Sep 25, 2015

I want a difference in days 

Select datediff(dd,Target_Date,Achv_Date) 
Now , checks are 
1] when target date greater than achv_Date the difference should be greater than 0 
means for FileID 77608 
Select datediff(dd,'2015-09-24 00:00:00.000','2015-09-24 10:42:32.823')
 
i am getting -6 it should be 6 cant switch Target_Date and Achv_Date in datediff else i will get opposite result in first four records basically, i want a two column TAT and Status beside  achv_date based on the values of two dates difference see above ..and also want a result of (No. of Yes in status / No. of Files that has achv_date )i.e. result= (7/8) = 87% 

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Transact SQL :: Combining Parts Of 2 Dates Into Third Date

May 7, 2015

In a stored procedure I have 2 dates that I need to combine parts of into a third date. I need the year from date1 and the month/day from date2.

Date1 = '2015/6/1'
Date2 = '2016/1/1'
Date3 needs to be '2015/1/1'

I have been messing around with datepart and dateadd with no luck.

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Transact SQL :: How To Get Four Quarter End Dates Based On Given Date

Jun 3, 2015

I have a simple following table which is having only one date column.

CREATE TABLE TEST_DATE
(
InputDate DATE
)
GO
INSERT INTO TEST_DATE VALUES('01-01-2015')
INSERT INTO TEST_DATE VALUES('06-25-2015')
INSERT INTO TEST_DATE VALUES('11-23-2014')
GO
SELECT * FROM TEST_DATE;

And the expected out put would be as follows:

I want to derive a Four Quarter End Date based on Date selected.

For Example if i select 01-01-2015 then
First Quarter End Date would be Previous Quarter End Date
Second Quarter End Date would be Current Quarter End Date
Third Quarter End Date would be Next Quarter End Date
Fourth Quarter End Date would be Next +1 Quarter End Date Like that

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Transact SQL :: Query To Get Date Span Between Dates

May 23, 2015

I need to calculate the amount of time between each visit. I am pulling the Row Number for my visits and now I need the date span that goes between each day. I also need a new column that returns a Yes or a No if the date span exceeds 3 years.

SELECT
ROW_NUMBER ( ) OVER ( PARTITION BY pv.PatientProfileId ORDER BY pv.Visit ASC ) AS RN
, CONVERT ( VARCHAR ( 20 ) , pv.Visit , 101 ) AS Visit
, pv.TicketNumber
, vstatus.Description AS VisitStatus
, doc.ListName AS Doctor

[Code] ....

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Transact SQL :: Combining Dates To Group Into A Date Range?

Nov 17, 2015

My scenario is: a person has many events, all based on a date.  I need to aggregate the person to show min and max dates for a period, the period being defined as ending when there is not an event following the next date.

DECLARE @Events TABLE
(
PK_EventINTIDENTITY(1,1) PRIMARY KEY
,FK_UserINTNOT NULL
,EventDateDATENOT NULL
)
DECLARE @User TABLE

[Code] ....

I would expect the groups to look something like below:

Is this where a recursive CTE may be used?

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Transact SQL :: How To Get Date Difference Between 2 Dates In DAYS Excluding Weekends

Oct 14, 2015

Here I have 2 Dates. CreatedDttm & ModifiedDttm.

I want  - DATEDIFF(Day,CreatedDttm,ModifiedDttm)  and I have to exclude the Weekend days from that query result.

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SQL Server 2008 :: How To Generate Week Ranges

May 28, 2015

I need to generate the week ranges like this format :

Here from date and to date would be picked up from the table but just to make you understand i have hardcoded it but this is the real date which is falling inside the table.

Note : Week should be generated from Monday to Sunday within desired date range

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Transact SQL :: Create Comma Separated List For Each Account And Date?

Jun 19, 2015

i have the following:

DECLARE @Table TABLE (
 OrgRoleNumTxt VARCHAR(10)
, AccountNm varchar(100)
, EffectDate DATETIME
, OperationNm varchar(100)
, Premium decimal(18,2)
)
Insert into @Table(OrgRoleNumTxt, AccountNm, EffectDate, OperationNm, Premium) VALUES
('00236', 'R.R. Donnelley', '2010-01-01', 'Chicago', 1000),
('00236', 'R.R. Donnelley', '2010-01-01', 'Boston', 3000)
select *
from @Table

but want this

Is it possible using basic T-SQL?

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Selecting Records Between Time Ranges On Dates

May 8, 2008

I'm looking for a way to link records that would be related to an employee that worked during that shift.

we have 2 shifts days and nights going from 6:00AM to 6:00PM

we have records that are written to a table as events happen on equipment on site.

"Equip_Trans"

"Start_time" "Equip_ID" "Shift_date" "Status" "End_Time"
Date-Time, int, Date, varchar(3), Date-time
5/8/2008 4:23:25 AM, 0200, 5/8/2008, M20, 5/8/2008 5:15:34 AM
5/8/2008 2:18:45 AM, 0206, 5/8/2008, M24, 5/8/2008 3:10:03
5/8/2008 5:15:34 AM, 0200, 5/8/2008, M13, 5/8/2008 7:24:36 AM
5/8/2008 3:10:03 AM, 0206, 5/8/2008, M20, Null
5/8/2008 7:24:36 AM, 0200, 5/8/2008, O21, 5/8/2008 7:55:34 AM
5/8/2008 7:55:34 AM, 0200, 5/8/2008, M24, 5/8/2008 8:36:34 AM


I have another transaction table "Operator_Trans"
"Operator" "Date" "Shift"

jane Doe, 5/6/2008, 1
Pete Who, 5/6/2008, 2
Sam What, 5/7/2008, 1
Pete Who, 5/7/2008, 2
john Doe, 5/8/2008, 1
jane Doe, 5/8/2008, 2


and last a third table "Shift"
Shift, Start_Time, End_Time
1, 6:00AM, 6:00PM
2, 6:00PM, 6:00AM

I need out put that will show all Equipment status's that started during the shifts worked by an operator

Pete Who, 5/8/2008 4:23:25 AM, 0200, 5/8/2008, M20, 5/8/2008 5:15:34 AM
Pete Who, 5/8/2008 2:18:45 AM, 0206, 5/8/2008, M24, 5/8/2008 3:10:03 AM
Pete Who, 5/8/2008 5:15:34 AM, 0200, 5/8/2008, M13, 5/8/2008 7:24:36 AM
Pete Who, 5/8/2008 3:10:03 AM, 0206, 5/8/2008, M20, Null
john Doe, 5/8/2008 7:24:36 AM, 0200, 5/8/2008, O21, 5/8/2008 7:55:34 AM
john Doe, 5/8/2008 7:55:34 AM, 0200, 5/8/2008, M24, 5/8/2008 8:36:34 AM

I am not completely sure the direction I should start off with. I have some SQL knowlege but I would still consider myself new.

Thanks

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SQL Server 2008 :: Finding Beginning Date From Multiple Lines Of Date Ranges?

Mar 20, 2015

I am trying to find a beginning date from multiple date ranges, for example:

RowNumberidBegin dtEnd Dt
107933192014-09-022015-06-30
207933192013-09-032014-09-01
307933192012-09-042013-09-02
407933192011-09-062012-09-03

For this id: 0793319, my beginning date is 2011-09-06

108203492014-09-022015-06-30
208203492013-09-032014-09-01
308203492012-09-042013-09-02
408203492011-12-122012-07-03--not a continuous date range

For this id: 0793319, my beginning date is 2012-09-04

108203492014-09-022015-06-30

For this id: 0820349, my beginning date is 2014-09-02

To find continuous date, you look at the beginning date in row 1 and end date in row 2, then if no break in dates, row 2 beginning date to row 3 end date, if no break continue until last date There could multiple dates up to 12 which I have to check for "no break" in dates, if break, display beginning date of last continuous date.

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Generate Dates Between Two Dates

Nov 8, 2006

Hi,

I have a table which records employees'time-off records. There are 6 columns in this TimeOff table. They are RequestID, EmpName, StartDate, EndDate, Type, NumofDays. I have another table which has all the dates from 01/01/1950 to 01/01/2056.

I am trying write a query which lists all the dates between the timeoff startdate and enddate, including the the start and end dates, but my query so far only lists the start and end date in a timeoff record:

SELECT D.[Date], Datename(dw,D.[Date]) AS Weekday
FROM Dates D LEFT JOIN TimeOff T ON D.[Date] = T.OffStartDate OR D.[Date] = T.OffEndDate
WHERE (OffType = 'Sick Day' AND EmpName = 'Cat White') AND (D.[Date] BETWEEN T.StartDate AND T.EndDate)

Any advice will be greatly appreciated!

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How To Pull From Two Date Ranges

Dec 17, 2006

Can someone please help me with this?
I need a query that will pull clients that made payments last year but not this year.
 I need the query to use date parameters so I can select any date range for the past year and the current year.
I have listed the tables and fields that might be needed: I'm hoping to do this without temp tables.
Date range is based on the tblPaymentReceipts.PaymentDate
tblClients, ClientID
tblPayment, PmtID, ClientID, Paystartdate, Paygroup
tblPaymentReceipts, PmtRcptID, PmtID,CleintID,PaymentDate,PaymentAmount

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Comparing Date Ranges

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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Date Ranges Overlapping

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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Age Function Help - Date Ranges

May 22, 2008

Hey,

I woudl like to take an age range (Say 22-27) and determine the min and max year, and then take those two DateTime Year values and do a SELECT from a column titled "Birthday Year", which is a an int value like '1984'. Could someone give me a hand with this?


/* Value 1: 1978
Value 2: 1988
*/

SELECT(???) FROM User WHERE ['BirthdayYear'] <> (?Age Function?)
GO


Thanks.

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Start And End Date Ranges

Apr 16, 2015

I have a set of MS SQL reports, that need to always run on a certain day of the month. Generally the 20th. If the report was to run few days before the 20th, say on the 10th, I wish to retrieve those days between the 20th from the previous month, till the current date.

e.g: '2015-4-10' should only return 20 days worth of data.

I have tried the following query:

SELECT
DATEADD(D, 1, MAX(CAST(DateTimeStamp AS DATE))) As EndDate,
MIN(CAST(DATEFROMPARTS(DATEPART(YEAR, DateTimeStamp),DATEPART(MONTH,
(SELECT CASE WHEN DATEDIFF(DAY,DATEPART(DAY, GETDATE()),28) <0 THEN (SELECT DATEPART(MONTH, GETDATE()))
ELSE (SELECT DATEPART(MONTH, GETDATE()) -1) END AS Date)),28)AS DATE)) AS StartOfMonth

FROM
tbLogTimeValues
WHERE
DATEPART(YEAR, DateTimeStamp) = DATEPART(YEAR, DATEADD(M, -1, GETDATE()))

Which parses ok and managed to test all individual queries, however, as a whole, I get the following error message "Cannot perform an aggregate function on an expression containing an aggregate or a subquery."

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Working With Date Ranges

Jul 23, 2005

Hello,I am importing data that lists rates for particular coverages for aparticular period of time. Unfortunately, the data source isn't veryclean. I've come up with some rules that I think will work to clean thedata, but I'm having trouble putting those rules into efficient SQL.The table that I'm dealing with has just under 9M rows and I may needto use similar logic on an even larger table, so I'd like somethingthat can be made efficient to some degree using indexes if necessary.Here is some sample (simplified) code:CREATE TABLE Coverage_Rates (rate_id INT IDENTITY NOT NULL,coverage_id INT NOT NULL,start_date SMALLDATETIME NOT NULL,end_date SMALLDATETIME NOT NULL,rate MONEY NOT NULL )GOINSERT INTO Coverage_Rates VALUES (1, '2004-01-01', '2004-06-01',40.00)INSERT INTO Coverage_Rates VALUES (1, '2004-03-01', '2004-08-01',20.00)INSERT INTO Coverage_Rates VALUES (1, '2004-06-01', '2004-08-01',30.00)INSERT INTO Coverage_Rates VALUES (2, '2004-01-01', '9999-12-31',90.00)INSERT INTO Coverage_Rates VALUES (2, '2004-03-01', '2004-08-01',20.00)INSERT INTO Coverage_Rates VALUES (2, '2004-08-01', '2004-08-01',30.00)GOThe rule is basically this... for any given period of time, for aparticular coverage, always use the coverage with the highest rate. So,given the rows above, I would want the results to be:coverage_id start_dt end_dt rate----------- ---------- ---------- --------1 2004-01-01 2004-06-01 40.001 2004-06-01 2004-08-01 30.002 2004-01-01 9999-12-31 90.00There can be any combination of start and end dates in the source, butin my final results I would like to be able to have only one distinctrow for any given time and coverage ID. So, given any date @my_date,SELECT coverage_id, COUNT(*)FROM <results>WHERE @my_date >= start_dtAND @my_date < end_dtGROUP BY coverage_idHAVING COUNT(*) > 1the above query should return 0 rows.Thanks for any help!-Tom.

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Searching By Date Ranges

Dec 11, 2007

Hello Gang,

I have a strange problem that I haven't dealt with before.

I need to execute a piece of code based on date ranges. If the date range is:

Scenario 1:between 02/28 (Feb 28) and 07/31 (July 31) do x
-----------------------------------------------------------
Scenario 2:between 08/01 (Aug 1) and 01/31 (Jan 31) do y


I am trying to automate a report. The report is supposed to generate a result that will differ based on the date ranges going into the future. E.g.

[1]. If the run date of the report is between '2/1/20xx' and '7/31/20xx' display <ABC> or

[2]. If the run date of the report is between '8/1/20xx' and '1/31/20xx' display <PQR>

In example # 2. I am moving from one year to the next (July to Dec and the one extra month of Jan). So for example, if the guy runs the report between August of 2008 and January of 2009, display <PQR>.

How do I achieve both # 1 & 2 above in a code? Does this explain better.

Joshi

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Custom Date Ranges

Mar 15, 2007



I'm currently using Reporting Services for SQL Server 2005. I have been able to setup, and configure the Report Manager interface, as well as generate reports via the Report Builder. What I have been unable to do is allow the user to dynamically set the date range that my SQL query will use. Can someone suggest / is it even possible wihtout using a custom web interface?

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Date Ranges Using Only Month And Day Part

Jun 2, 2006

We have some seasonal products that we would like to turn on and off automatically on our website.  To accomplish this, we've added StartDate and EndDate fields to the product table.  See simplified table:
--------------Simple Table:--------------ID int identity (PK)Value varchar(50)StartDate datetimeEndDate datetime
Normally I could just do something like SELECT ID, Value FROM PRODUCTS WHERE StartDate <= @MyDate AND EndDate >= @MyDate
The catch is that we want to ignore the year part of the dates so that we don't have to go back through and update all the records every year.  I'm pretty sure I've done this in the past, but I'm having a brain fart right now and can't remember how.  One of the issues is that the start month could be > the end month (e.g. - October 15 - January 1).  Using code in the application I could work around this (see below), but I would like to handle this in SQL if possible so I don't have to return more records than are needed and weed out the bad records.
'dtStart and dtEnd are Date Objects, StartDate and EndDate are strings containing the MM/DD partIf dtStart.CompareTo(dtEnd) > 0 And dtStart.CompareTo(myDate) < 0 Then    dtEnd = Date.Parse(EndDate & "/" & (myDate.Year + 1))ElseIf dtStart.CompareTo(dtEnd) > 0 And dtStart.CompareTo(objDate) > 0 Then    dtStart = Date.Parse(StartDate & "/" & (myDate.Year - 1))End If
I appreciate any help you can provide.
Thanks,Sam

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Spanning Date Ranges In Query

Apr 23, 2008

Hello, I am trying to automate our FTE calculations, and I need to be able to determine the total days employed for a given employee for a given period of time. I have the date ranges they worked, but am not sure how to total those based on the required period, For example

empployee|Start Date|End Date
1|1/1/2005|3/1/2006
1| 4/15/2006| 1/1/2008

How do I total the number of days employed for this employee between 2/1/2006 and 2/1/2007?

Thanks in advance for any advice?

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Get The Date Ranges For Constant Values.

May 31, 2008

I have a table with date like this.

InstId--Date----Readings
--1---10/12/2008--10
--1---11/12/2008--10
--1---12/12/2008--10
--1---13/12/2008--9
--1---14/12/2008--10
--1---15/12/2008--10
--1---16/12/2008--10
--1---17/12/2008--10
--2---05/03/2008--8
--2---06/03/2008--6
--2---07/03/2008--8
--2---08/03/2008--8
--2---09/03/2008--8
--2---20/03/2008--8

Guys I want to get the date ranges instrument wise for which the instrument readings are constant.

For example for instrument 1 the readings are constant i.e 10 from 10/12/2008
till 12/12/2008 & then again it is constant from 14/12/2008 till 17/12/2008.
Same goes for instrument id 2.It is constant from 07/03/2008 till 20/03/2008.
I need to get the output like this.

StartDate EndDate Readings
10/12/2008 12/12/2008 10
14/12/2008 17/12/2008 10
17/03/2008 20/03/2008 8

Thanks for any help.

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Checking If Date Ranges Overlap

Nov 6, 2013

Just want to check if my query is the standard way to check if date ranges overlap in a price table as I need to check any that overlap as I can't have two prices on one day.

For example if in a table there was:

Product TROUSER Colour BLUE
Start Date 01-NOV-13 End Date 20-NOV-13 Price £20.00
Start Date 10-NOV-13 End Date 12-NOV-13 Price £18.00
Start Date 21-NOV-13 End Date 25-NOV-13 Price £15.00

The top two overlap.I'm doing this which is giving me nothing returned which I'm hoping means I have no overlapping date ranges:

SELECT a.[PriceList]
,a.[ProductID]
,a.[Colour]
,a.[Start Date]
,a.[End Date]
,a.[Product Price]

[code]....

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