How To Subtract Previous Value Of One Column From Current Value Of Another Column
Sep 7, 2006
I have a table like this:
Bottom Top
0 2
4 6.5
9 14
15 17
In Transact SQL I need to calculate the difference between the current bottom and the previous top. If there is no previous top, then the result would be the current bottom.
So, the result would be 0, 2, 2.5, 1
I must return the value in a table. Thank you all for your help!
Karen
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Oct 1, 2006
Hi all,
I need help writing a query that will subtract the values of 2 rows from the same column to display in the result set. Some background information: a table has a sales column that keeps track of sales by the minute, but this is done in a cumulative manner, i.e, sales at row 3(minute 3) = sales recorded @ minute 2 plus sales @ minute 3. Therefor to get the actual sale at min 3, i would have subtract value at row 2 from row 3. make sense? it sounds very easy but I am having a hard time refering back to the previous row and am dealing with more than 1000 rows. i thought about doing a self join on the table but could not get it to do what i want.
would appreciate any help i can get. thanks
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May 26, 2014
I got a sales cost and cost amount table for my budget. the sales cost table is getting updated with FOBB items which makes the total incorrect . the FOBB values needs to be moved from the sales cost column to the cost amount column. how can i do it with an SQL script.
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Oct 14, 2015
I have the following table
Table Name EmployeeInformation
EmployeeID EmployeeFirstName EmployeeLastName
  1       |John            |Baker
  2       |Carl             |Lennon
  3       |Marion           |Herbert
Table Name PeriodInformation
PeriodID PeriodStart PeriodEnd
  1     |1/1/14    |12/30/14
  2     |1/1/15    |12/30/15
[code]...
I want a query to join all this tables based on EmployeeID, PeriodID and LeaveTypeIDÂ sum of LeaveEntitlement.LeaveEntitlementDaysNumber based on LeaveTypeID AS EntitleAnnaul and AS EntitleSick and sum AssignedLeave.AssignedLeaveDaysNumber based on LeaveTypeIDÂ Â AS AssignedAnnaul and AS AssignedSick and subtract EntitleAnnaul from AssignedAnnual based on LeaveTypeIDÂ Â AS AnnualBalance and subtract EntitleSick from AssignedSick based on LeaveTypeIDÂ Â AS SickBalance
and the table should be shown as below after executing the query
EmployeeID, EmployeeFirstName, EmployeeLastName, PeriodID, PeriodStart, PeriodEnd, EntitleAnnual, AssignedAnnual, AnnualBalance, EntitleSick, AssignedSick, SickBalance
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Nov 17, 2015
I have a Table Having Date,Opening,Addition,Sale values where opening value comes in the very first row other times it is zero.
In ssrs how can i have a report showing closing value = Opening+Addition-Sale  in current row (it is simple for 1st row ). this closing be the opening value in next row and same formula to be continued...
Date Opening AdditionTotalTank saleClosing Stock
01-11-15 14435 0 14435 8243 20627
02-11-15 0 15000 15000 9433
03-11-15 0 9000 9000 9436
04-11-15 0 12000 12000 8392
05-11-15 0 6000 6000 8157
06-11-15 0 12000 12000 8456
07-11-15 0 15000 15000 10903
08-11-15 0 6000 6000 8485
09-11-15 0 6000 6000 9413
10-11-15 0 21000 21000 6413
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Mar 20, 2015
I have a query which provides the below result set:
1165 6
1,173.0013
9740 6
9820 13
2271 6
2287 13
10,952.006
11,029.0013
4,074.006
4,103.0013
I want to achieve something like below. It should subtract the '13' row to '6' row and provide another column with the result. the '6' and '13' category code share the same Key.
1165 6 -8.00
1,173.0013-8.00
9740 6 -80
9820 13 -80
[code]...
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Aug 20, 2014
I have a table with Million plus records. Due to Running Totals article, I have been able to calculate the Trial_Balance for all months.
Now I am trying to provide a Beginning Balance for all months and the Logic is the Beginning Balance of July would be the Trial_Balance of June. I need to be able to do this for multiple account types. So the two datasets that need to be included in logic is actindx and Calendar_Month.
For actindx of 2 and Calendar_Month of 2014-01-01The Trial_Balance_Debit is 19585.46 This would make the Beginning_Balance of actindx 2 and Calendar_Month of 2014-02-01 19585.46
I am trying to do some type of self join, but not sure how to include each actindx number differently.
Table creation and data insert is below.
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
SET ANSI_PADDING ON
GO
CREATE TABLE [dbo].[TrialBalance](
[Trial_Balance_ID] [int] IDENTITY(1,1) NOT NULL,
[Code] ....
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Jun 22, 2015
I have a list of patient encounter dates ordered by the date. I need to subtract the previous date in order to get the number of days between each date for the same patient.
create table TEST
(
MRN varchar(10),
EncDTTM datetime,
Sequence int
)
insert into TEST(MRN, EncDTTM, Sequence) values( '00000203','2014-01-24','1')
insert into TEST(MRN, EncDTTM, Sequence) values( '00000203','2014-02-03','2')
[code]....
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Jan 12, 2005
Hey all, how do you take the current date and subtract a year from it in a SP?
What I want to do is...
Take the current date when the SP is ran, subtract a year, then if my date field is within that range (higher than the date with the subtracted year) it will continue in the query.
Edit: the answer is..
dateadd(yyyy, -1, getdate()) as Date1
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May 7, 2014
How do I get the previous row from one column add the next one from another column and record the result so I can get this result.
Bi_dateTotal_Pay_Period Total_monthly
1 2 2
2 2 4
3 2 6
4 2 8
5 3 11
this is my code so far:
drop table ##dates
create table ##dates (Bi_Date datetime);
with cte as
[Code]....
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Sep 26, 2006
I have a RS Matrix element where I am attempting to genrate an expression that uses a value from a previous column. I have had no luck so far...
Here's a brief example of the matrix that I am using:
=Fields!MonthName (my one and only Column Group)
=Fields!ProductName =Sum(Fields!Count) =DifferenceExpressionInQuestion
I gotta use a Matrix since the number of months is dynamic.
In my test, I have 12 month columns. Under each Month column is a subordinate Count and a Difference column. In the Difference column, I want to calculate the difference in the Count columns relative to the previous month (if the Count for Jan is 15 and the Count for Feb is 27, then Feb's Difference column should be 12).
So, I am stuck trying to generate an expression for the Difference column. This expression needs to refer to the Count of the previous month.
RS's Previous() function cannot be used in a Matrix (because that's the compiler error that I get when I try to use it).
Does anybody know how to do this???
Do I have to use custom code to do this???
If I can't do this calculation in a matrix, then what good is it???
TIA!!!
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Jul 25, 2015
Below is the resultset I got using the following SQL statement
SELECT Â ROW_NUMBER() OVER (PARTITION BY ID ORDER BY create_date DESC) AS RowNum
,ID
,create_date
,NULL AS end_date
FROM dbo.Table_1
Resultset:
RowNum ID
create_date end_date
1 0001
2015-02-18 NULL
2 0001
2014-04-28 NULL
[Code] ....
Now, I want to update the end_date column with the create_date's values for the next row_number. Desired output is shown below:
RowNum ID
create_date end_date
1 0001
2015-02-18 NULL
2 0001
2014-04-28 2015-02-18
[Code] ....
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Aug 21, 2015
I have a scenario to compare previous records based on each ID columns. For each ID, there would be few records, I have a column called "compare", We have to compare all Compare 1 records with Compare 0 Records. If Dt is lesser or equal to comparing DT, then show 0. Else 1
We always only one Compare 0 records in my table, so all compare 1 columns will compare with only one row per ID
My tables look like
Declare @tab1 table (ID Varchar(3), Dt Date, Compare Int)
Insert Into @tab1 values ('101','2015-07-01',0)
Insert Into @tab1 values ('101','2015-07-02',1)
Insert Into @tab1 values ('101','2015-07-03',1)
Insert Into @tab1 values ('101','2015-07-01',1)
Insert Into @tab1 values ('101','2015-06-30',1)
Insert Into @tab1 values ('102','2015-07-01',0)
Insert Into @tab1 values ('102','2015-07-02',1)
Insert Into @tab1 values ('102','2015-07-01',1)
select * from @tab1
1.) In the above scenario for ID = '101', we have 5 records, first record has Compare value 0, which mean all other 4 records need to compare with this record only
2.) If Compare 1 record's Dt is less or equal to Compare 0's DT, then show 0 in next columnÂ
3.)Â If Compare 1 record's Dt is greater than Compare 0's DT, then show 1 in next columnÂ
My expected result set should be like ....
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Oct 10, 2013
I have successfully created a linked server between SQL Server 2008 R2 and a Postgres db, and all is working fine, except when I try to run a stored procedure that returns a TEXT column.The top lines of the stored procedure (function in postgres) that is called are:
CREATE OR REPLACE FUNCTION get_defects()
RETURNS TABLE(defectid bigint, featurevalues text) AS ...
The function obviously executes correctly in postgres, however when I try to execute the function in SQL Server via the linked server:
SELECT *
FROM OPENQUERY(POSTGRES, 'SELECT * FROM get_defects()')
I get the error:
OLE DB provider "MSDASQL" for linked server "POSTGRES" returned message "Requested conversion is not supported.".
Msg 7341, Level 16, State 2, Line 1
Cannot get the current row value of column "[MSDASQL].featurevalues" from OLE DB provider "MSDASQL" for linked server "POSTGRES".The problem seems to be when trying to return the TEXT column featurevalues, as the following query executes as expected:
SELECT defectid
FROM OPENQUERY(POSTGRES, 'SELECT * FROM get_defects()')
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Jun 13, 2006
My question is concerned with the three columns below (customerID, RepairDate, CompletedRepair (Yes or No). The column name "CompletedRepair " is blank initially. I need to update the CompletedRepair column with this logic below:
- A customer comes to our store to fix their car, if we fix their problem on the first time and they don’t return later for this same issue, then the
•CompletedRepair column = Y
- If a customer needs to come back to our store to re-fix the same issue within 7 days windows based on the RepairDate on the previous transaction then
•On the last return transaction: CompletedRepair = Y (example: RepairDate =6/12/2006)
•On all previous transactions: CompletedRepair = N (example: RepairDate =6/8/2006, 6/9/2006, 6/10/2006)
- If a customer needs to come back to our store to re-fix the same issue but out of the 7 days windows based on the RepairDate then
•On the last return transaction: CompletedRepair = Y (RepairDate =6/12/2006)
•On the previous transaction: CompletedRepair = Y (RepairDate =6/1/2006)
Every time customer comes to for car repair shop for a new issue or an old issue, we create a new repair transaction in our SQL db. The update on the "CompletedRepair " column will be run every day. Today's records will be run against with last 7 days records (based on Repair Date) to check when customer has been really fixed: the last fix counted Y, the previous fix counted as N but comparison in only 7 days. In other words, a repair today is considered as a completed repair when comparing with last 7 day repairs but it might become not a completed repair if this same customer would come back within next 7 days for the same issue.
The CompletedRepair column is dynamic column and is updated daily by using the logic above.
Below is the expected outcome after we update the Completed Repair column:
CustomerID Repair DateCompleted Repair
ab1 06/12/06 Y
ab1 05/28/06 Y
ab1 05/18/06 Y
ab105/15/06 N
ab1 05/12/06 N
Initially 5/12/06 had Y, when 5/15/06 transaction came, it took the Y and made the 5/12/06 become N. The 5/18/06 transaction did the same to 5/15/06 transaction, made itself Y and converted 5/15/06 into N. The 5/28/06 is Y because comparing with 5/18/06, it is out of 7 days window. The 6/12/2006 is Y because comparing with 5/28/06, it is out of 7 days window.
ab2 06/02/06 Y
ab2 05/28/06 N
ab2 04/19/06 Y
ab2 04/14/06 N
The 4/14/06 transaction initially was Y, it became N when new transaction on 4/19/06 came. Same thing with transactions on 5/28/06 and 6/2/06
ab3 05/11/06 Y
ab3 03/29/06 Y
ab3 03/23/06 N
ab3 03/12/06 Y
The 3/23/06 was Y, when new transaction on 3/29/06 came, it became N and the new transaction is Y. The 5/11/06 is Y because comparing back to 3/29/06, they are out of 7 days window.
ab4 05/11/06 Y
This ab4 customer came to fix her car only one time and don't come back. We supposed the fix was sucessfully and so we mark the CompletedRepair as Y.
I think that I would need to use SQL cursor or case statement for this but I really don't know how to start. Please advice and help me out. Any ideas and suggestion are really appreciated! If you need more information, please let me know!
Thank you!
Tracy
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Oct 9, 2013
I have a table named galleryindex which contains rows of photo gallery names along with an associated id (gsid).
example:
gsid (assigned ID), gnumpics (# of photos), gname (gallery name)
=================
43, 133, our summer visit
493, 53, camping photos
When someone uploads more photos I do the following to recalculate the NEW number of photos for the gallery.
SELECT gnumpics FROM galleryindex where gsid= 43
(select current # of photos from location 43 - our summer visit)
in ASP classic I then do this:
sb = objrs("gnumpics")
sb = sb + totupl
SQL = "UPDATE galleryindex SET gnumpics =" & sb & " where gsid= '" & fnum & "'"
to update the gallery with the new amount of photos which is obtained by pulling the old value into SB, and adding "totupl" (total pics uploaded) to it and then updating the values.In SQL speak it would be like this if 20 photos were just uploaded:
SELECT gnumpics FROM galleryindex where gsid= 43
(results in 133 photos)
UPDATE galleryindex SET gnumpics =153 where gsid= 43
(write back 133 + 20)
Basically I'm trying to update the current column gnumpics by a numeric value and I know there's an easier way then pulling the current, adding to it and then writing it back to SQL.
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Oct 18, 2007
Hey All,
I am new to programming in SQL developer and I was hoping one of you kind salmon of knowledge could help me
I am running an SQL script every 15 minutes to pull data. I would like to insert the results into a column in a table. I have two issues:
1.How can I give the result column the current time stamp as an alias?
2.How can I add this column to the results table (I know its Alter table but do I put this into the insert sql?)
I would appreciate any help possible
Thanks
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May 19, 2012
I am trying to create a stored procedure where i would like to fetch the next previous and current rows from a particular pagename which is stored in a table with sorting of dateadded
like my products table structure
id
iQty
strProductTitle
strPageName
DtAdded
DtApproved
my dummy records are like
1 13 'PCHDD' 'PCHDD' '2009-12-03 04:32:30.363' '2009-12-04 04:32:30.363'
2 30 'SDRAM' 'SD_Ram' '2009-12-03 04:32:30.363' '2009-12-06 04:32:30.363'
3 12 'Pen Drive' 'Pendrive' '2009-12-03 04:32:30.363' '2009-12-05 04:32:30.363'
4 3 'Note Book' 'NoteBook' '2009-12-03 04:32:30.363' '2009-12-08 04:32:30.363'
5 15 'VIO' 'VIO' '2009-12-03 04:32:30.363' '2009-12-06 04:32:30.363'
6 19 'PS2' 'PS_2' '2009-12-03 04:32:30.363' '2009-12-09 04:32:30.363'
7 31 'PS3' 'PS_3' '2009-12-03 04:32:30.363' '2009-12-02 04:32:30.363'
8 23 'WII' 'WII' '2009-12-03 04:32:30.363' '2009-12-10 04:32:30.363'
9 22 'Speakers' 'Speakers' '2009-12-03 04:32:30.363' '2009-12-16 04:32:30.363'
10 12 'Iphone' 'I_phone' '2009-12-03 04:32:30.363' '2009-12-15 04:32:30.363'
now if i query for a record like
I_phone
i should get
Prv Detail I_pad row
11 23 'Ipad' 'I_pad' '2009-12-03 04:32:30.363' '2009-12-11 04:32:30.363'
Current Detail I_phone
10 12 'Iphone' 'I_phone' '2009-12-03 04:32:30.363' '2009-12-15 04:32:30.363'
Next Record Speakers
9 22 'Speakers' 'Speakers' '2009-12-03 04:32:30.363' '2009-12-16 04:32:30.363'
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Jul 2, 2014
I am novice to intermediate writer of T-SQL. Here is my current Query:
SELECT [FISCALYEAR],
[ACCTPERIOD],
SUM([ACTIVITYDEBIT]) AS TrialBalanceDebit,
[POSTINGTYPE]
FROM [dbo].[TB_Lookup]
WHERE [POSTINGTYPE]='Profit & Loss'
GROUP BY [FISCALYEAR],[ACCTPERIOD], [POSTINGTYPE]
ORDER BY acctperiod ASCand this is what is produces.
FISCALYEARACCTPERIODTrialBalanceDebitPOSTINGTYPE
2014 201401 282361372.13000 Profit & Loss
2014 201402 227246272.86000 Profit & Loss
2014 201403 315489534.33000 Profit & Loss
2014 201404 287423793.76150 Profit & Loss
2014 201405 256521290.76000 Profit & Loss
2014 201406 65582951.30000 Profit & Loss
Now I need a way to add another field that takes the TrialBalanceDebit from current ACCTPERIOD and adds it to the Previous ACCTPERIOD TrialBalanceDebit.
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Feb 25, 2015
I've tried all sorts of code i.e. cross apply, running totals, etc. Cannot get this to work. I am trying to add a previous row value but only doing it for each group.
Source records
DECLARE @tbl table (Item int, Sequence int, StartTime datetime, Duration int)
INSERT INTO @tbl (Item,Sequence,StartTime, Duration) VALUES (1,1,'2/25/2015 12:00 am',10),(1,2,null,20),(1,3, null,22),(2,1,'2/25/2015 1:00 am',15),(2,2,null,30),(2,3, null,45),(2,4, null,5)
select * from @tbl
ItemSequenceStartTimeDuration
1102/25/15 0:0010
12null 20
13null 22
2102/25/15 1:0015
22null 30
23null 45
2 4 null 5
I would like to set the start time of the next row to be equal to the previous row time + duration. I know the start time of each group of 'Items' when the 'Sequence' number = 1. The last 'duration' value in the group would be ignored.
My expected output would be:
ItemSequenceStartTimeDuration
1102/25/15 0:0010
1202/25/15 0:1020
1302/25/15 0:3022
2102/25/15 1:0015
2202/25/15 1:1530
2302/25/15 1:4545
2402/25/15 2:305
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Feb 10, 2014
I have table 'Open_Months' as shown below
Emp_IdMonthYear
00FBG 42013
I need current month and previous 2 months, for this i have concatinated month and year column into date formate, the query for this as shown below
SELECT cast(CONVERT(datetime, CONVERT(varchar(4), OM_Year) + RIGHT('0' + CONVERT(varchar(2), OM_Month), 2) + '01', 112) AS Datetime) from Open_Months where OM_Emp_ID = '00FBG'
Date
2013-04-01
From the above date I need to find current month and its previous 2 months.
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Mar 3, 2014
My current code returns account_number with multiple start_date regardless of the value is same or not. However, I would like to get only the account number when the value on start_date is different within same account_number.
select
acct_number
count(start_date) from table_A
group by acct_number, start_date
having(count(start_date) > 1)
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Jul 28, 2015
I have a excel file which has a column called "Code" and their values are A,B,C,D,E,F,G,H. I want to create a new column called "status" based on the values of "Code".
Code:
A
B
C
D
E
F
G
H
If A,C,E,G then "status" = "Active" else if B,D,F,H then "Status" = "Inactive". I like to do it using "Derived Column".
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Nov 10, 2005
Hi,
I have to compare the previous row with current row in a table in SQL Server 2000. Please help me how to do this in a optimized way. Table contains nearly 30 columns and rows count is more than 10 digits.
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Sep 25, 2015
I need to return the previous row value if it is negative in current row. For example, in the below table for ID=7 i need the value 1305(ID=4) since 6,5 are negative values.Â
Existing
 values
          ID
      Input
          ID
     Input
[code]...
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Jul 28, 2014
I need to get previous month data in the table based on current date.
In case of execution of each month, the data for previous month should come with date as between
create table TestDate
(Sno Int,
Name varchar(100),
DateofJoin datetime)
insert into TestDate values (1,'Raj', '2/21/2014')
insert into TestDate values (1,'Britto', '6/12/2014')
insert into TestDate values (1,'Kumar', '5/14/2014')
insert into TestDate values (1,'Selva', '6/27/2014')
insert into TestDate values (1,'Ravi', '5/2/2014')
insert into TestDate values (1,'Gopu', '6/2/2014')
/*
if I execute in month July ( ie: today)
select * from TestDate where dateofjoin between 1-june-2014 and 30-june-2014
Result
5 Ravi 2014-05-02 00:00:00.000
3 Kumar 2014-05-14 00:00:00.000
if I execute in month June
select * from TestDate where dateofjoin between 1-may-2014 and 30-may-2014
Result
6Gopu2014-06-02 00:00:00.000
2Britto2014-06-12 00:00:00.000
4Selva2014-06-27 00:00:00.000
/*
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Nov 18, 2015
There are two tables testmaster and testdetail. If the value of Price for a particular ID in testdetail is more than the threshold value defined in testmaster, the output should have a new column with value as 'High Value', if the value is less than the threshold the new output should be 'Low Value' other wise 'Ignore'
Example: for ID=3, threshold is defined as 40% in testmaster table, but on 11/12/2015 the new price is 100 which 100% more than the previous value, so the status is High Value as shown below.
ID Date
Price Status
1 11/12/2015 100 Low Value
2 11/12/2015 160 Ignore
3 11/12/2015 100 High Value
create table testmaster
(
ID int,
Threshold int
)
create table testdetail
(
ID int,
Date varchar(20),
Price float
)
[Code] ...
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Jun 16, 2015
I am looking to pull all records for current & previous calendar year in one query. I know how to pull the current calendar year, but how would I pull current & previous?
select id, list_date
from tableA
where list_date > DATEADD(year,-1,GETDATE())
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Jan 21, 2015
I have a table with score info for each group, and the table also contains historical data, I need to get the ranking for the current week and previous week, here is what I did and the result is apparently wrong:
select CurRank = row_number() OVER (ORDER BY cr.CurScore desc) , cr.group_name,cr.CurScore
, lastWeek.PreRank, lastWeek.group_name,lastWeek.PreScore
from
(select group_name,
Avg(case when datediff(day, asAtDate, getdate()) <= 7 then sumscore else 0 end) as CurScore
[Code] ....
The query consists two parts: from current week and previous week respectively. Each part returns correct result, the final merged result is wrong.
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Aug 3, 2015
How can I calculate a DateTime column by merging values from a Date column and only the time part of a DateTime column?
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Oct 16, 2006
Hi all,
The requirement is to have a table say 'child_table', with an Identity column to refer another column from a table say 'Parent_table'..
i cannot implement this constraint, it throws the error when i execute the below Alter query,
ALTER TABLE child_table ADD CONSTRAINT fk_1_ct FOREIGN KEY (child_id)
REFERENCES parent_table (parent_id) ON DELETE CASCADE
the error thrown is :
Failed to execute alter table query: 'ALTER TABLE child_table ADD CONSTRAINT
fk_1_ct FOREIGN KEY (child_id) REFERENCES parent_table (parent_id) ON DELETE
CASCADE '. Message: java.sql.SQLException: Cascading foreign key 'fk_1_ct' cannot be
created where the referencing column 'child_table.child_id' is an identity column.
any workarounds for this ?
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Sep 7, 2007
Hi guys,
If I have a temporary table called #CTE
With the columns
[Account]
[Name]
[RowID Table Level]
[RowID Data Level]
and I need to change the column type for the columns:
[RowID Table Level]
[RowID Data Level]
to integer, and set the column [RowID Table Level] as Identity (index) starting from 1, incrementing 1 each time.
What will be the right syntax using SQL SERVER 2000?
I am trying to solve the question in the link below:
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2093921&SiteID=1
Thanks in advance,
Aldo.
I have tried the code below, but getting syntax error...
ALTER TABLE #CTE
ALTER COLUMN
[RowID Table Level] INT IDENTITY(1,1),
[RowID Data Level] INT;
I have also tried:
ALTER TABLE #CTE
MODIFY
[RowID Table Level] INT IDENTITY(1,1),
[RowID Data Level] INT;
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Jul 11, 2007
When you use "Alter Table add Column", it adds the column to the end of the list of fields.
How do you insert the new column to position number 2 for instance given that you may have more than 2 columns?
Create table T1 ( a varchar(20), b varchar(20), c varchar(20))
Alter table add column x varchar(20)
so that the resulting table is
T1 a varchar(20), x varchar(20), b varchar(20), c varchar(20)
Can this be done programmatically?
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