Transact SQL :: Query Distinct Results Based On Date Range

May 21, 2015

I have a data structure like this

UID , Name, amount, start date                               End Date
     1      A         10         2015-05-01 00:00:00             2015-05-01 23:59:59
     2      A         10         2015-05-02 00:00:00             2015-05-02 23:59:59
     3      A         10         2015-05-03 00:00:00             2015-05-03 23:59:59
     4      A         10         2015-05-04 00:00:00             2015-05-04 23:59:59
      5      B         10         2015-05-05 00:00:00             2015-05-05 23:59:59

[code]...

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Transact SQL :: How To Hard Code Mention Date Range In SP To Get Expected Results

Oct 7, 2015

how to hard code mention date range in my SP to get expected results in my query 01/01/2012 to 12/31/2012

DECLARE @ACCOUNT AS INT
DECLARE @POSTING_DATE AS DATETIME
DECLARE @FIRST_POSTING_DATE AS DATETIME
SET @POSTING_DATE = {?POSTING_DATE}
SET @ACCOUNT = {?ACCOUNT}

[code]...

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Transact SQL :: How To Query Records For A Date Range

Oct 14, 2015

This one is making my head hurt!  Trying to figure out how to query for records between date range.  The records have a start_date and an end_date field.  The end_date field maybe null.

For example, say you wanted to see the records of everyone checked into a hotel during a given date range.  You need to account for the people that checked in before you @start_date parameter and may check out after your @end_date parameter.  

fyi- As for the null end_date field, think of this as they have checked in and not sure when they will checkout yet.

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Transact SQL :: Query DateTime Field By Date Range

Dec 2, 2015

I have a table of errors with a DateTime field for when the error occurred.  I want to query the table for a given date range omitting the time portion.  What is the most efficient way to perform this query?

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Transact SQL :: Update Table Based On Available Date Range In Same Table

Dec 2, 2015

I would like to update the flag of the promotion ID should the promotion ID date range overlap with Promotion ID(All) Date Range. The general logic is as below.

Update TableName
SET PromotionID Flag = 1 AND Reason = 'Overlap with row ID(Overlap row ID number)'
Where EACH ROW(Except with Promotion ID ALL) Date Range Overlap with ROW(with promotion ID ALL) Date range

Note: ROW is Partition By ColumnA,ColumnB

TableName: PromotionList

ID PromotionID StartDate EndDate ColumnA ColumnB Flag Reason
1 1 2015-04-05 2015-05-28 NULL NULL 0 NULL
2 1 2015-04-05 2015-04-23 2 3 0 NULL
3 2 2015-05-04 2015-07-07 2 3 0 NULL
4 ALL 2015-04-05 2015-04-28 NULL NULL 0 NULL
5 ALL 2015-07-06 2015-07-10 2 3 0 NULL
6 1 2015-02-03 2015-03-03 NULL NULL 0 NULL

Expected outcome after performing update on the table

ID PromotionID StartDate EndDate ColumnA ColumnB Flag Reason
1 1 2015-04-05 2015-05-28 NULL NULL 1 Overlap with row ID 4
2 1 2015-04-05 2015-04-23 2 3 0 NULL
3 2 2015-05-04 2015-07-07 2 3 Overlap with row ID 5
4 ALL 2015-04-05 2015-04-28 NULL NULL 0 NULL
5 ALL 2015-07-06 2015-07-10 2 3 0 NULL
6 1 2015-02-03 2015-03-03 NULL NULL 0 NULL

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DISTINCT Results Based On The Value Of One Col?

Jun 19, 2008

Here's one thats had me and a coworker puzzled. Hopefully it's something simple:

TABLE A: (log of messages)
userid, int
date, datetime
message, varchar(50)

Table A Data:
1, 6/18/2008 @ 2:32:41, This is my message
1, 6/18/2008 @ 2:31:02, This is my message
1, 6/17/2008 @ 7:34:26, This is another message
2, 6/18/2008 @ 2:32:41, This is not his message
2, 6/16/2008 @ 11:21:32, This is my message


TABLE B: (List of users)
userid, int
name, varchar(100)

Table B Data:
1, John
2, Mike

I want to extract the most recent message logged per user, i.e.:

name | date | message
--------|---------------------|-------------------------
John | 6/18/2008 @ 2:32:41 | This is my message
Mike | 6/18/2008 @ 2:32:41 | This is not his message.

I have been unable to come up with a query that can return just the one value. I've tried variants of:

SELECT DISTINCT b.name, a.date, a.message
FROM a INNER JOIN
b ON a.userid = b.userid

including sub-queries and even played with the visual diagrams trying to design this in Enterprise Manager but none of the combinations I tried work. Is there an easy way to do this via a query? I don't have experience with stored procedures. Would that be necessary?

TIA

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SQL Server 2008 :: Query To Select Date Range From Two Tables With Same Date Range

Apr 6, 2015

I have 2 tables, one is table A which stores Resources Assign to work for a certain period. The structure is as below

Name StartDate EndDate
Tan 2015-04-01 08:30:00.000 2015-04-01 16:30:00.000
Max 2015-04-01 08:30:00.000 2015-04-01 16:30:00.000
Alan 2015-04-01 16:30:00.000 2015-04-02 00:30:00.000

The table B stores the item process time. The structure is as below

Item ProcessStartDate ProcessEndDate
V 2015-04-01 09:30:10.000 2015-04-01 09:34:45.000
Q 2015-04-01 10:39:01.000 2015-04-01 10:41:11.000
W 2015-04-01 11:44:00.000 2015-04-01 11:46:25.000
A 2015-04-01 16:40:10.000 2015-04-01 16:42:45.000
B 2015-04-01 16:43:01.000 2015-04-01 16:45:11.000
C 2015-04-01 16:47:00.000 2015-04-01 16:49:25.000

I need to select the item which process in 2015-04-01 16:40:00 and 2015-04-01 17:30:00. Beside that I need to know how many resource is assigned to process the item in that period of time. I only has the start date is 2015-04-01 16:40:00 and end date is 2015-04-01 17:30:00. How I can select the data from both tables. There is no need for JOIN, just seperate selections.

Another item process time is in 2015-04-01 10:00:00 and 2015-04-04 11:50:59.

The result expected is

Table A

Name StartDate EndDate
Alan 2015-04-01 16:30:00.000 2015-04-02 00:30:00.000

Table B

Item ProcessStartDate ProcessEndDate
A 2015-04-01 16:30:10.000 2015-04-01 16:32:45.000
B 2015-04-01 16:33:01.000 2015-04-01 16:35:11.000
C 2015-04-01 16:37:00.000 2015-04-02 16:39:25.000

Scenario 2 expected result

Table A

Name StartDate EndDate
Tan 2015-04-01 08:30:00.000 2015-04-01 16:30:00.000
Max 2015-04-01 08:30:00.000 2015-04-01 16:30:00.000

Table B

Item ProcessStartDate ProcessEndDate
Q 2015-04-01 10:39:01.000 2015-04-01 10:41:11.000
W 2015-04-01 11:44:00.000 2015-04-01 11:46:25.000

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Transact SQL :: Query To Show Most Recent Value Based On Date Field

Jun 18, 2015

I simply need to list the most recent value for each employee here... the value at each person's maximum date

Sample Detail Data:

EmpID                   Date                      Value
1                              1/1/14                  27
1                              2/12/15                333
2                              5/5/15                   255
3                              5/4/15                   110  
3                              1/1/13                   67                          
3                              3/2/14                   80

[Code] ....

What is the most efficient way to display the most recent value for each employee ID via MS SQL.?

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Transact SQL :: Query Based On Date - Get Data From Table Above WHERE DateofBirth Is Tomorrow

Oct 30, 2015

Lets say I have a table, tblPersons

FirstName |  LastName   |  DateofBirth
----------------------------------------
  Thomas   | Alva Edison |   10-10-2015
  Benjamin | Franklin    |     10-10-2015
  Thomas   | More        |     11-10-2015
  Thomas   | Jefferson   |    12-10-2015

Suppose today's date is 09-10-2015 in (dd-MM-yyyy format), I want to perform a query in such a way that I should get the data from the table above WHERE DateofBirth is tomorrow, so I could get the following result.

FirstName |  LastName   |  DateofBirth
----------------------------------------
  Thomas   | Alva Edison |   10-10-2015
  Benjamin | Franklin    |     10-10-2015

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Reporting Services :: Date Range Filter Based On Date Values Returned In Report?

Aug 27, 2015

I have a QA Deployment Date field that is being returned in a custom report I created. I also found a sample date range parameter:

What I want to accomplish:

I want to select a From and To Date and filter the report to only display the rows that have the QA Deployment Date within the selected range.

For example.. I want to select From Date (8/1/2105) and To Date (8/31/2015) and I only want to return only the results that have a QA Deployment date between that selected range.

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Transact SQL :: How To Frame A Range Based On Amount

Oct 24, 2015

I want to frame a range of data based on particular group of columns

If OBJECT_ID('tempdb..#ResellerRange') IS NOT NULL
    drop table #ResellerRange
create table #ResellerRange
(   ResID        varchar(10)
   , amt    decimal(18,2)
   , serialno    int)

   insert into #ResellerRange ( ResID,amt, serialno )
   values ('Raja',10,67),('raja',10,68),('raja',10,89),('Prabu',20,56)

I want below output
 
   resid    amt    min    max
    ----------------------------------   
   raja      10    67     68
    raja      10    89     89
    Prabu     20    56     56

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Transact SQL :: Creating A View Using DISTINCT And Not Getting Unique Results?

Sep 21, 2015

I am building a view to be used to drill down into a Lightswitch app I'm building and to drive this I want to use a view based off the selection of that value several other values will be given to the user to choose from related to the first selection. I've created a view using the following statement:

SELECT DISTINCT TOP (100) PERCENT ARSFamily, ARS_Index
FROM dbo.csr_standards_cmsars
ORDER BY ARSFamily

 but the results come back with ALL the records of the source table (509 rows) when there should have only been 29 rows returned (the appropriate number of families or unique groups).  The index is necessary to have Lightswitch use the view as a data source.what I'm doing wrong here?

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Query Info Between Time Range & Date Range

Aug 16, 2006

I am attempting to write a SQL query that retrieves info processed between two times (ie. 2:00 pm to 6:00 pm) during a date range (ie. 8/1/06 to 8/14/06)... I am new to SQL and am perplexed... I have referenced several texts, but have not found a solution. Even being pointed in the right direction would be greatly appreciated!!

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Create A Record Based On Date Range

Mar 25, 2008

I need to create records based on date range on monthly basis, please help.

Here is an example:
ID Startdate EndDate
1 20070301 20070522

and I need to create the following data set based on start and end date range
ID Startdate EndDate
1 20070301 20070331
1 20070301 20070430

1 20070301 20070522

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Create (n) Number Of Records Based On Date Range

Mar 11, 2008

Ok, I have two parameters - @StartDate and @EndDate. We only care about the date part of these paramters. What I would like to do is create a table with one record for each date between these two values. For example:

@StartDate = '01/01/2008'
@EndDate = '01/8/2008'

Should yield a table with 9 records in it for every day between @StartDate and @EndDate like so:

01/01/2008 <datacol1> <datacol2>
01/02/2008 <datacol1> <datacol2>
01/03/2008 <datacol1> <datacol2>
01/04/2008 <datacol1> <datacol2>
01/05/2008 <datacol1> <datacol2>
01/06/2008 <datacol1> <datacol2>
01/07/2008 <datacol1> <datacol2>
01/08/2008 <datacol1> <datacol2>

I know I could just do a WHILE (@StartDate <= @EndDate) loop and insert records into a temp table but I'm looking to see if there are any new methods/techniques to achieve this with a more simple statement.

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Creating Rows Based On Date Range From Another Table

Aug 20, 2006

I wish to build a table based on values from another table.I need to populate a table between two dates from another table. Usingthe START_DT and END_DT, create records between those dates.I need a new column that is the days between the date and the MID_DTThe data I wish to end with would look something like this:PERIOD DATE DAY_NO200602 2005-07-06 -89200602 2005-07-07 -88200602 2005-07-08 -87<...>200602 2005-10-02 -2200602 2005-10-03 -1200602 2005-10-04 0200602 2005-10-05 1<...>200602 2005-12-18 75CREATE TABLE "dbo"."tblDates"("PERIOD" CHAR(6) NOT NULL,"START_DT" DATETIME NULL,"MID_DT" DATETIME NULL,"END_DT" DATETIME NOT NULL)INSERT INTO tblDates VALUES('200505',2005-04-12,2005-07-05,2005-09-12)INSERT INTO tblDates VALUES('200602',2005-07-06,2005-10-03,2005-12-18)INSERT INTO tblDates VALUES('200603',2005-10-04,2006-01-17,2006-03-27)INSERT INTO tblDates VALUES('200604',2006-01-18,2006-04-10,2006-06-19)INSERT INTO tblDates VALUES('200605',2006-04-11,2006-07-04,2006-09-11)INSERT INTO tblDates VALUES('200702',2006-07-05,2006-10-02,2006-12-18)

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Loop Through Flat Files Based On A Date Range

Feb 9, 2007

Hello,

I currently have a For Each File container that loops through all files from a specific directory. The files have a naming convention that looks like this;

CDNSC.CDNSC.SC00015.01012007

The last segment of the file name is the date of the data in the file (mmddyyyy). The create date for these files is always a day later than indicated in the file name.

What I would like to do is to have more control over the 'range' of files that are looped through by using the date portion of the file name to define what group of files should be looped through. Ideally, I would like to have a 'StartDate' variable and an 'EndDate' variable that I could define at run time for the package, and the package would loop through all of the files where the date portion of the file name fell between 'StartDate' and 'EndDate'.

Any ideas on this?

Thank you for your help!

cdun2

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Transact SQL :: How To Select First And Last Date Within A Range

Oct 12, 2015

I have a table with the following data:

Type Date Subtype
1 1-1-2015 10
1 5-1-2015 10
1 6-1-2015 10
1 15-1-2015 11
1 20-1-2015 10

[Code] ....

I want to group by the data to the following while saving the first and last date within each type and subtype: 

type startdate enddate subtype
1 1-1-2015 6-1-2015 10
1 15-1-2015 15-1-2015 11
1 20-1-2015 22-1-2015 10
1 25-1-2015 28-1-2015 12
2 2-1-2015 5-1-2015 11
2 6-1-2015 7-1-2015 12
2 14-1-2015 20-1-2015 11
2 23-1-2015 30-1-2015 13

I tried several approaches, but I can't fnd a solution to do this with T-SQL.

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Transact SQL :: Date Within Range Calculations

Jul 31, 2015

I'm trying to move some logic that I have currently within a program and putting it into SQL instead.

My table has the following 3 fields that are of interest to me: StartDate (DateTime), StopDate(DateTime), Length (int)

Length is calculated based on StopDate - StartDate and is expressed to the nearest minute.

What I want to do is query the Db giving a start date and end date and return all records that fall within that date range. I then want to present that data such that the earliest date is set to the start date criteria, the last to the end date criteria and the length recalculated.

Say for example I query for results between 01/02/2015 07:00:00 and 01/02/2015 19:00:00 and I get the following:

Start Stop Length
01/02/2015 06:30:00 01/02/2015 07:05:00 35
01/02/2015 07:05:00 01/02/2015 10:00:00 175
01/02/2015 10:00:00 01/02/2015 19:15:00 555

I would like the output to show as

Start Stop Length
01/02/2015 07:00:00 01/02/2015 07:05:00 5
01/02/2015 07:05:00 01/02/2015 10:00:00 175
01/02/2015 10:00:00 01/02/2015 19:00:00 540

Is there a way to do this?

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Transact SQL :: Update Based On Results From Select

Jul 24, 2015

Update statement based on the results from this SELECT:

SELECT RELQ_REL_VERSION_NM,
RELQ_RELEASE_Q_ID,
RELQ_STATUS_CD,
RELSP_RELEASE_STEP_ID,
RELSP_STEP_TYPE_CD,
RELSP_STATUS_CD
FROM RELEASE_QUEUE WITH (NOLOCK)

[Code] ....

I need to update all records where the 

RELEASE_STEPS.RELSP_STATUS_CD = 'SKPD'TORELEASE_STEPS.RELSP_STATUS_CD = 'CMPS'

I imagine that the UPDATE statement will be something like:

UPDATE RELEASE_STEPS SET dbo.RELEASE_STEPS.RELSP_STATUS_CD = 'CMPS'
WHERE (
SELECT RELQ_REL_VERSION_NM,
RELQ_RELEASE_Q_ID,
RELQ_STATUS_CD,
RELSP_RELEASE_STEP_ID,
RELSP_STEP_TYPE_CD,

[Code] .....

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Transact SQL :: How To Get Results Based On Conditional Where Clause

Jul 14, 2015

My source table has two columns... Policynum and PolicyStartdate and data looks like..
.
Policynum              PolicyStartdate
123G                       01/01/2012    
456D                       02/16/2012     
789A                       01/21/2012
163J                       05/25/2012

Now my output should return based on 3 parameters..

First two parameters are date range... let say @fromdt and @todt

Third parameter is @policynum

Scenario-1: Enter dates in date range param and leave policynum param blank
Ex: policystartdate between '01/01/2012 and '01/31/2012'.... It returns 1st and 3rd rows from above in the output

Scenario-2: enter policy num in policynum param and don't select any dates
Ex:  policynum ='456D'     It returns 2nd row in the output

Scenario-3: Select dates in date range param and enter policynum in param
Ex: policystartdate between '01/01/2012 and '01/31/2012' and policynum
='163J'.  it should return only 4th row even though dates were selected(Override date range when policynum is entered in param and just return specified policynum row in the output)

I need t-sql code to get above results.

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Performing Date Range Queries Based On A Non-Calendar Fiscal Year

Sep 20, 2006

Hi,

Using SQL Server 2000, I need to perform date range type queries that involve my company's Fiscal Year, which is not the same as the calendar year. My company's Fiscal Year if from Sept 1 to Aug 31, where Aug 31st year determines the Fiscal Year. For example, since today's date is 09/20/2006, the current Fiscal Year is 2007.

An example of a typical query requirement:

Find all the sales figures to-date for the current Fiscal Year. So, a WHERE clause will consist of a date range query from 09/01/2006 to 8/31/2007.

Initially, I created a Function to find the current Fiscal Year based on the current date, by calling the GETDATE() function and passing the results to the following function:

CREATE FUNCTION dbo.fnGetFY (@CurrentDatetime datetime)
RETURNS int
AS
BEGIN
DECLARE @FY int
IF (SELECT MONTH(@CurrentDatetime)) > 8
SET @FY = YEAR(@CurrentDatetime) + 1
ELSE
SET @FY = YEAR(@CurrentDatetime)
RETURN(@FY)
END

So, the view queries that involve the Fiscal Year call the above function.

However, these function calls drag down the VIEW query response time to the point where the time is either unacceptable or an ODBC Timeout occurs, even with Query Analyzer.

Is there a way to create a Global server parameter to hold the current Fiscal Year value, so function calls are not necessary? Or set Fiscal Year date ranges for a database or server system parameter?

Does anyone know of a efficent, response timewise, way to handle Fiscal Year date range queries?

Will appreciate the help!!!

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Transact SQL :: Getting Distinct Row With Min Date From Other Table?

Sep 18, 2015

Have the following 2 tables:

create table #LiabilityConstraint
(
PolNum varchar(10),
LcCode varchar(10),
LcDsc varchar(100),
LcAmt decimal(18,2),
LcFreq varchar(10),
LcSetId int

[code]....

there is a many to many relation between the tables.  Each Policy can have 1 or many Liability Constraints.  Each Liability Constraint can be attached to 1 or many policies.

What I need to do is get the distinct combination of LcCode, LcDesc, LcAmt, LcFreq and LcSetId from the Liability table as well as the earliest PolInceptionDt from any of the policies associated with the Liability Constraint using only the distinct combination of LcCode, LcDesc, LcAmt, and LcFreq.

Give the data above, I would need to end up with the following result:

I tried to use the Row_Number functionand join using PolNum, but I keep getting the wrong results back.

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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 :: Select First And Last Record For Certain Date Range

Jun 16, 2015

I have a situation where an agent has number of activities for a certain date range. If an agent has multiple activities within certain date range, I would like BALANCE BEFORE from the first activity and BALANCE AFTER from the last activity. Here is my current SQL query that returns the following data:

DECLARE @BeginDate Datetime
DECLARE @EndDate Datetime
Set @BeginDate = '05-1-2015'
Set @EndDate = '05-31-2015'
SELECT
a.AgentName,
R.BALANCEBEFORE,

[Code] ....

AGENTNAME          BALANCE BEFORE  BALANCE AFTER          DATE
DOUGLAS              9738.75                9782.75                     2015-05-11
DOUGLAS              9782.75                9804.75                     2015-05-12
DOUGLAS              9804.75                9837.75                     2015-05-13

In the sample data above, ideally I would like my query to return data as follow:

AGENTNAME          BALANCE BEFORE                  BALANCE AFTER
DOUGLAS              9738.75 (from first activity)    9837.75 (from last activity)

Not sure how I can write sql query to accomplish this.

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Transact SQL :: Loop A Month In A Specified Date Range?

Jul 23, 2015

I am trying to query a code where i need to loop a month in a specified date range. Inside the loop I need to return a result of data each month and need to update the table of the returned data. How do I do the update a field inside the loop? Here's my query:

declare @table1 table (
YEAR_EFF int,
MONTH_EFF int,
IDNumber (8),
SUBS_CNT smallint,
MEM_CNT smallint)
declare @StartDate datetime,

[code]....

Others says I need to use exec sp_executesql N'' but how do I use it using my code above?

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Transact SQL :: Get Activated Data For A Date Range?

Jun 29, 2015

I've data like below:

Now, I've to get active data for a particular date range. Let me explain the active data definition as below:

StartDate : 01-Jul-2015
EndDate : 31-Dec-2015

It should return all the data which was active for that date range even if it was only for one day.If no data found for that date range, check the last record before start date and and if its active then it should be returned else not.

I though of creating a function and pass primary key with date range and return the final status but that doesn't seems like an optimized query.

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Transact SQL :: Grouping Records With A Date Range Into Islands

Nov 18, 2015

I tried to ask a similar question yesterday and got shot down, so I'll try again in a different way.  I have been looking online at the gaps and islands approach, and it seems to always be referencing a singular field, so i can't find anything which is clear to get my head around it.In the context of a hotel (people checking in and out) I would like to identify how long someone has been staying at the hotel (The Island?) regardless if they checked out and back in the following day.

Data example:
DECLARE @LengthOfStay TABLE
(
PersonVARCHAR(8) NOT NULL,
CheckInDATE NOT NULL,
CheckOutDATE NULL

[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 :: Recognizing Month And Proportion In A Date Range

Oct 8, 2015

I need to recognize only one month in a date range e to make a proportion of the quantity. Practically, period 31-08-2015 - 30-09-2015 is 31 days, 1 belonging August and 30 belonging September so 3.2258% of the quantity must belong August and 96.7742% September. The quantity 200, so 193.54 belong September (That's what I need to achieve). Range 01-09-2015 / 30-09-2015 Qty 500, all 500 belong September.

Range 01-07-2015 / 20-08-2015 Qty 2500 0 belong September. A little bit more complicated if I got 25-06-2015 / 16-12-2015. it 30 day for September and with a datediff I can count the days and make a proportion. I can write piece by piece the code but I'd prefer of course to have only one query for this.

The DDL:
create table forum (idd int, byfrom date, byto date, qty int)
insert into forum values
(1,'2015-06-15','2015-08-18',300),(2,'2015-09-16','2015-10-04',400),(3,'2015-07-28','2015-09-27',1000),
(4,'2015-09-01','2015-09-30',500),(5,'2015-09-03','2015-09-03',300),(6,'2015-08-02','2015-09-02',100),
(7,'2015-07-01','2015-07-30',500),(8,'2015-06-03','2015-12-08',500),(9,'2015-09-01','2015-09-30',500),
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[Code] ....

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~
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