Suppose a table being
Create table myTable (ID int, col1 int, col2 int)
I know how to make a computed column being the sum of other column for the same ID e.g. "computed_column = col1 + col2".
Getting the average would be "computed_column = (col1 + col2)/2" But how to get the Max, Min?
Even "Sum(col1,col2)" or AVG(col1, col2) does not work as the formula for a computed column...
I get the following error , when I execute my CTE on SQL Server 2008 R2.CTE1 has more columns than were specified in the column list
--SQL CODE IS AS BELOW
WITH CTE1 (AUCTIONID,[Open Time], [Response SLA Broken], [Response SLA Deadline], [Response SLA Actual], [Responsetime SLA Broken Before Transfer], [Resolution SLA Broken], [Resolution SLADeadline], [Resolutiontime SLA Broken
[code]...
T1
-------
a1
a2
datetime
a4
a5
.....
i need distinct max between a1&a2 which i can get no problem but i cant get that unique datetime that correspond to a1&a2 in 1 query because this is will a subquery in a big query. Creating another temp table etc is not an option for me. for every specific a1 there is many entries of a2 + timedate etc.
create table abc_test (
id int
,runs int
,date1 datetime
[code]....
I can either get distinct ID + latest date or ID + largest #ofRuns, both will do but also need the third column.
Hi all,
I have a table with 3 computed columns, the first two reference a function for there value. The last computed column should be total of the other computed columns, however when trying to write the formula for this column SQL Server rejects it.
Am i correct in thinking it is not possible to reference other computed columns in a computed column's forumla.
My current work around is to call the functions again that the other computed columns use to generate the total, though this seems to me like a performance issue.
Could anyone offer some advise on my situation.
Any input apreciated.
I am trying to figure out how to pivot a temporary table. I have a table which starts with a date but the number of columns and columns names will vary but will be type INT (Data, col2,col3,col4………….n)
So it could look like
Date , TS-Sales, Budget , Toms sales
01-Jan-14,100,120,300
02-Jan-14,80,150,300
03-Jan-14,100,20,180
Turned to this
01-jan-14, 02-jan-14, 03-jan-14
100,80,100
120,150,20
300,300,180
Or even just the date and a SUM
What I want is to be able to sum al the columns but without knowing the name and the amount columns to start with this is a manually processes. How could I automate this?
I am trying to pivot data based on columns value in year column... but results are not showing up correctly. I want to see all columns after pivot.I want to Pivot based on year shown in the data but it can be dynamic as year can go for last 3 years
I am also using an inner join as i have two amount columns in my code and i want to show both amount columns for all displayed year.I am able to pivot but I need in output all the columns like this Id,MainDate, Year1,Year2,Year3(if any), AMT1 for YR1, AMT2 for Yr1, , AMT1 for YR2, AMT2 for Yr2, AMT1 for YR3, AMT2 for Yr3,
Here is some data:
-- CREATE TABLE [dbo].[TEMP](
--[FileType] [varchar](19) NOT NULL,
--[dType] [char](2) NOT NULL,
--[dVersion] [char](2) NOT NULL,
--[Id] [char](25) NOT NULL,
--[MainDate] [char](40) NULL,
[code]....
I have data:
Ticket User Priority
A ME 1
B ME 1
C ME 2
C ME 3
D ME 2
E YOU 2
F YOU 1
G ME 3
H YOU 2
H YOU 3
I ME 1
Essentially if Ticket and User are the same I just want the min priority returned.
SO:
Ticket User Priority
A ME 1
B ME 1
C ME 2
D ME 2
E YOU 2
F YOU 1
G ME 3
H YOU 2
I ME 1
I've tried partition and rank but can't get it to return the right output.
I am using CROSS APPLY instead of UNPIVOT to unpivot > one column. I am wondering if I can dynamically replace column names based on different tables? The example code that I have working is based on the "Allergy" table. I have thirty more specialty tables to go. I'll show the working code first, then an example of another table's columns to show differences:
select [uplift specialty], [member po],[practice unit name], [final nomination status]
,[final uplift status], [final rank], [final uplift percentage]
,practiceID=row_number() over (partition by [practice unit name] order by Metricname)
,metricname,Metricvalue, metricpercentilerank
[code]....
Rheumatology Table:The columns that vary start with "GDR" and [GDR Percentile Rank] so I'm just showing those:
GDR (nvarchar(255), null)
GDR Percentile Rank (nvarchar(255), null)
GDR PGS (nvarchar(255), null)
GDR Rank Number (nvarchar(255), null)
PMPM (nvarchar(255), null)
[Code] ....
These are imported from an Excel Workbook so that's why all the columns with spaces for now.
Is it possible to get a Computed column in one table to carry out a SELECT & SUM from a column in another table? I have tried a SELECT / FROM / WHERE construct but SQL complains about that.
Regards
Clive
I am working with data that has a lot of records that get updated and inserted frequently, and to avoid having to create formulas through code all over the place, I am experimenting with computed column formulas. I have a question though.. It works well for any addition or subtraction (columnA+columnB), however, when I try to use division (columnA/columnB), it only returns integers, no decimals. I would like to have decimals, particularly with a specific scale and precision and I would really like to attempt this without any coding. Any suggestions?
View 3 Replies View RelatedI have a table with fields called fname (First Name) and lname (Last Name). I need the user´s email thai is compose from lname and fname:
LOWER(LEFT (fname,1) + lname)
Is there any difference between creatig this computed column ia a table or in a view in SQL Server 2000?
I can do:
1. CREATE TABLE Users(
fname varchar(20),
lname varchar(20),
email as LOWER(LEFT (fname,1) + lname) )
Or
2. CREATE TABLE Users (
fname varchar(20),
lname varchar(20))
CREATE VIEW Vw_users (fname, Lname ,
email)
AS
SELECT fname, Lname ,
LOWER(LEFT (fname,1) + lname) )
Is one of them is better?
Paulo
Dear all,
Pls help me with this
I have 2 tables
Trip (TripID, Duration)
Reserve(ReserveID, TripID, StartDay, EndDate)
in which EndDate = StartDay + Trip.Duration
How can I do this?
I have a table with fields called fname (First Name) and lname (LastName). I need the user´s email thai is compose from lname and fname:LOWER(LEFT (fname,1) + lname)Is there any difference between creatig this computed column ia a tableor in a view in SQL Server 2000?I can do:1. CREATE TABLE Users(fname varchar(20),lname varchar(20),email as LOWER(LEFT (fname,1) + lname) )Or2. CREATE TABLE Users (fname varchar(20),lname varchar(20))CREATE VIEW Vw_users (fname, Lname ,email)ASSELECT fname, Lname ,LOWER(LEFT (fname,1) + lname) )Is one of them is better?Paulo*** Sent via Developersdex http://www.developersdex.com ***Don't just participate in USENET...get rewarded for it!
View 1 Replies View RelatedHi,
Consider the following example
create table sample
(col1 int,
col2 int ,
col3 AS col1 + col2) PERSISTED NOT NULL)
basically col3 is a computed column. Now when ever a row in col1 or col2 is updated the computed column will reflect the new value. how does this happen in the background. does this use row level triggers or what other mechanism is used to maintain col3 - computed column
Hi,
What is the difference between a computed column and a UDF?
Is a computed column the same as the "Formula" field under Design Table in Enterprise Manager?
Also, what is the proper syntax for the Formula field? Can I use regular SQL on it or is there more to it?
thanks,
Frank
Hi, I have a small problem with my database. I've got following situation: I have a computed column, which value is base on currency rate: rent * rate. Users have to have possibility to change currency rate easily (maybe another table or constant). Is there any way to create formula, which would compute value properly, via constant or something like this? Or the easiest workaround would be load data into dataset (I'm building asp.net application - database will be very small - couple of hundreds of records) and make calculations programmatically?
Przemek
Hi,
I have a table with 4 columns let us say A,B,C,D.
column D is computed column with formula A + '-' + B
Now, i want to add one more condition to the formula which looks like "A + '-' + B + '-' + C".
Please let me know how to do this using T-SQL as i cannot open the table in design mode in production server.
Thanks in Advance!!
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
i have a table containing the column "current month" and "current day" as smallint which contains the number of months since 1900-01-01 and the day of this month. now i want to trnslate this column in a smalldatetime ( not datetime !) value using a computed column and then create an index on that column.
the formula should be:
dateadd(d,[current day]-1,
dateadd(m,[current month],convert(smalldatetime,'1900-01-01'))
)
trying to create an index on this column results in an error message saying
that the formula is nondeterministic or imprecise
removing the convert statement leaving only the date results in a column of type datetime and creating the index works fine
replacing convert(smalldatetime,'1900-01-01') with a column name which has the type smalldatetime also allows to create an index but thats not what i want to do.
it seems that sql2000 thinks a convert from a string to a date is nondeterministic. Is there any possibility to create a const of type smalldatetime without using convert?
Any idea?
(besides this, datediff(d,'yyyy-mm-dd',anydate) is nondeterministic but datediff(d,dateadd(d,0,'yyyy-mm-dd'),anydate) is deterministic. strange...)
and
I am having a problem with using UDF as part of a temp table computed column. Here's the sample code:
IF EXISTS( SELECT 1 FROM information_schema.routines WHERE routine_name = 'fn_test')
DROP FUNCTION dbo.fn_testGO
CREATE FUNCTION dbo.fn_test( @x int, @y int)
RETURNS INT AS
BEGIN
DECLARE @z INT
SET @z = @x + @y
RETURN @z
END
GO
CREATE TABLE #X
(
x INT,
y INT,
z AS (dbo.fn_test(x,y))
)
I receive the following error:
Server: Msg 208, Level 16, State 1, Line 2
Invalid object name 'dbo.fn_test'.
I do not get this error if I use a regular table.
HELP!
I have a table that I cannot allow a computed field to exist on (due to a 3rd party software), so I am thinking I could create a view with a computed field that is persistent, is that possible?
the syntax below will not work, I am not even sure if this is possible, but if it can work, that would be great.
I am wanting to get the sum of jetfoot1, 2 & 3 and have the total added up as "total"
create view ViewSumReport as
select JETFOOT1,JETFOOT2,JETFOOT3,(JETFOOT1+JETFOOT2+JETFOOT3)as [total] persisted
from dbo.fielddata
GO
I have a checksum calculation as a persisted, indexed computed column on a temporary table that I used to compare against original records to detect changes.
It seems that the update/ insert statements in my procs get out of sync on larger tables (500,000 rows +) with the checksum calculations. The only thing I can think of is that the column calculations are performed asynchronously in relation to the updates/ inserts. This is a problem for me.
Is my assumption correct? If it is, how can I adjust for this, i.e., force the computations to be performed synchronously or wait for the computations to complete before running comparisons?
-Jeremy
___________________________
Geek At Large
In SQL Sever, do the size of computed columns gets added to the totalsize of the tables? Does SQL server stores the actual values incomputed columns?Thanks_GJK
View 1 Replies View RelatedI need to create an function similar to the "MATCH" function in Excelthat evaluates a number within a set of numbers and returns whetherthere is a match. I have put the example of what I see in excel in thecheck column. The "0" answer in the result column is in the fourthaccount in the list. Somehow I need to loop through the accountscomparing the result to the total and indicate a match in the checkcolumn. It wouldn't even need to tell me the row number; it could be a0 or 1.account total result check123770266.84124.2112377026131.050 412377026164.38-33.33123770260131.051237702678.7152.3412377167-31.34221.891237716731.34159.211237716738.55152 51237716731.34159.211237716715238.5512377167490.91-300.36123771670190.55123771670190.5512377167-31.3443.341237716731.34-19.341237716738.55-26.551237716731.34-19.3412377167152-14012377167490.91-478.9112377167012123771670121237736347.058412377363131.05012377363-45.38176.4312377363-47.05178.11237736347.0484.0112377363-47.04178.091237736347.058412377363541.11-410.06123773630131.0512377363672.15-541.11237750737.64152.91
View 3 Replies View RelatedI have a checksum calculation as a persisted, indexed computed column on a temporary table that I used to compare against original records to detect changes.
It seems that the update/ insert statements in my procs get out of sync on larger tables (500,000 rows +) with the checksum calculations. The only thing I can think of is that the column calculations are performed asynchronously in relation to the updates/ inserts. This is a problem for me.
Is my assumption correct? If it is, how can I adjust for this, i.e., force the computations to be performed synchronously or wait for the computations to complete before running comparisons?
Does tsql allow sth like
Select col1*col2 as ComputedColumn, ComputedColumn + 2 as NewColumn
From T_Table
THis is possible in Access.
Hello,
does anyone know a website, where I can read something about the syntax of Computed Columns?
I don't know how to enter the following expression in the computed columns field of MS SQL Server:
When x-y < 0 Then 0 else x-y
Thank you
M-l-G
Instead of using Full-Text indices, which I don't like to manage, we've tried to use seperate tables that contain recordID, the word, a count of the word in the parent field and computed column which is the CHECKSUM() of the word column. I indexed the checksum column with a clustered index.
Works great in Query Analyser. But when the ASP page calls it, I get this message:
Microsoft OLE DB Provider for SQL Server (0x80040E14)
INSERT failed because the following SET options have incorrect settings: 'ARITHABORT'.
Same for updates and deletes. The question is how should these SET settings be done? Any ideas would be greatly welcomed.
Thanks
Jason
Using SS2K, I'm getting the following error while bulk inserting:Column 'warranty_expiration_date' cannot be modified because it is acomputed column.Here is my bulk insert statement:BULK INSERT dbo.TestDataFROM 'TestData.dat'WITH (CHECK_CONSTRAINTS,FIELDTERMINATOR='|',MAXERRORS = 1,FORMATFILE='TestData.fmt')The computed column is not referenced in the format file and the data filedoes not contain the computed data.Thanks
View 2 Replies View RelatedMaybe I am missing something very obvious, but I couldn't do it: begin trangocreate table foo (f1 int not null,f2 int not null,f3 as (f1 + f2) not null primary key clustered)gorollback trango This returns:Server: Msg 8183, Level 16, State 1, Line 8Only UNIQUE or PRIMARY KEY constraints are allowed on computed columns.
View 4 Replies View Relatedi have a table that contains 2 columns
A B (B values are only 1 and 2)
-- --
x 1
y 2
z 1
x 2
z 1
j 1
k 2
i want to make a query that will check for dinstinct x what B values it has Ex. It will show result like this
result
A B
-- --
X 1 and 2
Y 2
z 1
K 2
how to make please help
I want to create computed column in table.
Suppose I have three physical column A,B and C
I want to create compute column with computed column.
A+B= X
X+C=Z
Is it possible.
I created a index on a computed column. I did not see any improvementin performance with a join to this column and also my inserts andupdates to this table are failing. Any ideas?Chender
View 2 Replies View Related