Trying To Find A Match In Computed Columns
May 26, 2006
I need to create an function similar to the "MATCH" function in Excel
that evaluates a number within a set of numbers and returns whether
there is a match. I have put the example of what I see in excel in the
check column. The "0" answer in the result column is in the fourth
account in the list. Somehow I need to loop through the accounts
comparing the result to the total and indicate a match in the check
column. It wouldn't even need to tell me the row number; it could be a
0 or 1.
account total result check
123770266.84124.21
12377026131.050 4
12377026164.38-33.33
123770260131.05
1237702678.7152.34
12377167-31.34221.89
1237716731.34159.21
1237716738.55152 5
1237716731.34159.21
1237716715238.55
12377167490.91-300.36
123771670190.55
123771670190.55
12377167-31.3443.34
1237716731.34-19.34
1237716738.55-26.55
1237716731.34-19.34
12377167152-140
12377167490.91-478.91
12377167012
12377167012
1237736347.0584
12377363131.050
12377363-45.38176.43
12377363-47.05178.1
1237736347.0484.01
12377363-47.04178.09
1237736347.0584
12377363541.11-410.06
123773630131.05
12377363672.15-541.1
1237750737.64152.91
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Aug 27, 2014
I'd like to first figure out the count of how many rows are not the Current Edition have the following:
Second I'd like to be able to select the primary key of all the rows involved
Third I'd like to select all the primary keys of just the rows not in the current edition
Not really sure how to describe this without making a dataset
CREATE TABLE [Project].[TestTable1](
[TestTable1_pk] [int] IDENTITY(1,1) NOT NULL,
[Source_ID] [int] NOT NULL,
[Edition_fk] [int] NOT NULL,
[Key1_fk] [int] NOT NULL,
[Key2_fk] [int] NOT NULL,
[Code] .....
Group by fails me because I only want the groups where the Edition_fk don't match...
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Jul 4, 2007
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
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May 20, 2008
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?
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Oct 31, 2003
I have a table with fields called fname (First Name) and lname (Last Name). I need the userīs 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
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Nov 6, 2006
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?
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Jul 20, 2005
I have a table with fields called fname (First Name) and lname (LastName). I need the userīs 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!
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Sep 25, 2006
Hi,
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
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Jul 8, 2004
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
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Aug 22, 2006
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
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Oct 8, 2007
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!!
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Nov 13, 2001
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
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Jun 25, 2004
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!
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Jul 25, 2012
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...
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Apr 1, 2015
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
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Mar 19, 2008
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
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Jul 23, 2005
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
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Mar 19, 2008
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?
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Nov 12, 2007
Does tsql allow sth like
Select col1*col2 as ComputedColumn, ComputedColumn + 2 as NewColumn
From T_Table
THis is possible in Access.
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Aug 30, 2007
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
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Oct 28, 2007
Find value match in SQL table
Is there any application that can compare two tables and find the similarities (there is no high rate of exact match on the field values but there are similarities)?
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Oct 31, 2002
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
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Jul 20, 2005
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
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Apr 24, 2008
Hi,
In short:
I want my following problem to work with a LIKE instead of exact match and if possible be faster. (currently 4s)
Problem:
I got a set of rows with varchar(50), spread out over multiple tables.
All those tables relate to a central Colour table.
For each of the columns, I want to match the values with a set of strings I insert and then return a set of Colour.Id
E.g: input: 'BLACK', 'MERCEDES', '1984'
Would return colour ids "025864", 45987632", "65489" and "63249"
Because they have a colour name containing 'BLACK' or are on a car from 'MERCEDES' or are used in '1984'.
Current Situation:
I) Create a table containing all possible values
CREATE TABLE dbo.CommonSearch(
id int IDENTITY (1, 1) NOT NULL,
clr_id int,
keyWord varchar(40),
fieldType varchar(25)
And fill it with all the values (671694 rows)
)
II) Stored Procedure to cut a string up into a table:
CREATE FUNCTION dbo.SplitString
(
@param varchar(50),
@splitChar char = ''
)
RETURNS
@T TABLE (keyWord varchar(50))
AS
BEGIN
WHILE LEN( @param ) > 0 BEGIN
declare @val varchar(50)
IF CHARINDEX( @splitChar, @param ) > 0
SELECT @val = LEFT( @param, CHARINDEX( @splitChar, @param ) - 1 ) ,
@param = RIGHT( @param, LEN( @param ) - CHARINDEX( @splitChar, @param ) )
ELSE
SELECT @val = @param, @param = SPACE(0)
INSERT INTO @T values (@val)
END
RETURN
END
III)Stored Procedure to query the first table with the second one
CREATE PROCEDURE [dbo].[GetCommonSearchResultForTabDelimitedStrings]
@keyWords varchar(255) = ''
AS
BEGIN
SET NOCOUNT ON;
select clr_id, keyWord, fieldType
from dbo.commonSearch
where keyWord in (select * from splitString(@keyWords, ''))
END
So, how can I use a LIKE statement in the IN statement of the last query.
Furthermore, I was wondering if this is the best sollution to go for.
Are there any better methods? Got any tuning tips to squeeze out an extra second?
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Feb 1, 2014
I have two tables with similar two columns as shown below
table1
code | organisation
256 | abc
832 | xyz
893 | tax
921 | abc
951 | abc
table2
code | organisation
951 | abc
832 | xyz
256 | abc
893 | tax
921 | tax
Now, I want to check whether all the codes in table1 existing in table2 and list them, and if both columns from table1 is matching with the both columns in table2. For e.g. 256|abc in table1 is matching with 256|abc in table2
The output should be :
921 | tax
For e.g. 256abc is there or not in table2,
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May 4, 2015
There are two tables
TABLE 1 (NAME - Groupseats)
id session course groupcode sub1 sub2 sub3
1 2015 ba1 137 HL EL Eco
2 2015 ba1 138 EL SL HS
3 2015 ba1 139 SL EL His
From this table i use to admit a student and select their choice of group simultaneously all the subjects associated with GROUP is save on another table.
Here is the TABLE 2 Structure and sample data:
table 2 (NAME - tblstudetail)
id studentID session course sub1 sub2 sub3
1 15120001 2015 ba1 EL SL HS
2 15120002 2015 ba1 HL EL Eco
3 15120003 2015 ba1 SL EL His
4 15120004 2015 ba1 HL EL Eco
AND so no..........................
Now i just want to COUNT the Number of Groups Filled in tblStudateil.
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Mar 1, 2008
Sorry for the confusing subject. Here's what im doing:I have a table of products. Products have N categories andsubcategories. Right now its 4. But there could be more down theline so it needs to be extensible.So ive created a product table. Then a category table that has manycategories of products, of which a product can belong to N number ofthese categories. Finally a ProductCategory "match" table.This is pretty straigth forward. But im getting confused as to how towrite views/sprocs to pull out rows of products that list all theproducts categories as columns in a single query view.For example:lets say productId 1 is Cap'n Crunch cereal. It is in 3 categories:Cereal, Food for Kids, Crunchy food, and Boxed.So we have:Product----------------1 Capn CrunchCategories-----------------1 Cereal2 Food for Kids3 Crunchy food4 BoxedProductCategories------------------1 11 21 31 4How do I go about writing a query that returns a single result set fora view or data set (for use in a GridView control) where I would havethe following result:Product results---------------------------------ProductId ProductName Category 1 Category 2Category 3 Category N ...------------------------------------------------------------------------1 Capn Crunch Cereal Food for Kids Crunchy foodBoxedAm I just thinking about this all wrong? Sure seems like it.Cheers,Will
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Apr 28, 2015
I am getting error [[Msg 16924, Level 16, State 1, Line 13
Cursorfetch: The number of variables declared in the INTO list must match that of selected columns.]] when i execute below script.
Declare @mSql1 Nvarchar(MAX)
declare @dropuser int
declare @dbname Nvarchar(max)
declare @username Nvarchar(max)
DECLARE Dropuser_Cursor CURSOR FOR
[Code] ....
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May 30, 2015
I want to compare two columns in the same table called start date and end date for one clientId.if clientId is having continuous refenceid and sartdate and enddate of reference that I don't need any caseopendate but if clientID has new reference id and it's start date is not continuous to its previous reference id then I need to set that start date as caseopendate.
I have table containing 5 columns.
caseid
referenceid
startdate
enddate
caseopendate
[code]...
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Jul 24, 2007
I am doing a lookup that requires mapping 2 columns in the column mapping section. When I do this, I get the error "Row yielded no match during lookup" . The SQL that I captured in SQL profiler does find the record when I run it in Management Studio. I have already tried trimming everything to no avail.
Why is this happening?
I tried enabling memory restrictions but then I my package hangs and I get a SQLDUMPER_ERRORLOG.log file with the following logged:
07/24/07 13:35:48, ERROR , SQLDUMPER_UNKNOWN_APP.EXE, AdjustTokenPrivileges () failed (00000514)
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Input parameters: 4 supplied
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ProcessID = 5952
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ThreadId = 0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Flags = 0x0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, MiniDumpFlags = 0x0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, SqlInfoPtr = 0x0100C5D0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, DumpDir = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ExceptionRecordPtr = 0x00000000
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ContextPtr = 0x00000000
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ExtraFile = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, InstanceName = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ServiceName = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 11 not used
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 15 not used
07/24/07 13:35:49, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 7 not used
07/24/07 13:35:49, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, MiniDump completed: C:Program FilesMicrosoft SQL Server90SharedErrorDumpsSQLDmpr0033.mdmp
07/24/07 13:35:49, ACTION, DtsDebugHost.exe, Watson Invoke: No
Why am I getting this error with "Enable Memory Restriction"?
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May 5, 2008
Hi is there any way to find no. of columns in a database table
like we can do that in Oracle by typing DESC tablename
San
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Mar 9, 2008
Hi I want to find 3 different columns maximum values in one shot. Like I tried to use a reader to go through results but it kept coming back with index out of bounds. Right now to get it to work I got to use a ExecuteScalar() get the first columns max value and then open the connection again(since it seems after ExecuteScalar() it closes the connection) and then do the ExecuteScalar() again. Open the connection again and do the ExecuteScalar() again. Theres got to be a better way of doing this.
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Jun 2, 2008
Im having trouble finding a solution to comparing columns to find the lowest value.
Example
Row 1
COL 1 = 10
COL 2 = 20
COL 3 = 60
COL 4 = 5
COL 5 = 35
I would want to return 5.
I tried to write a case statement such as below but am unable to use Logical Operators.
WHEN C1 <= C2 and C1<= C3 THEN C1
WHEN C2 <= C3 THEN C2
ELSE C3
any help would be great.
Thanks,
Nick
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