Derived Column NEEDS An Editor Window!

Mar 28, 2008

The "window" if you call it that to enter in complex derived column logic is painful (at best). At a minimum, the entry line should (just like in the cases where SQL is entered into a ole db command, sql exec etc) open a editor window to allow you to work in something other than a single long line.

In addition, allowing for cr/lf in the text would then allow the text to be formated/indented in meaninful ways. The issue now, once you nest a few statements together, it get VERY confusing and not easy to read since the whole thing is required to be on a single line.


(This same issue exists with line in which you need to enter the text in a conditional split).

THANKS!

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Derived Column Transformation Editor

May 8, 2008

Greetings, I am attempting to create a flat file delimited by |. I am using (ISNULL(LIN1_OPT_ADDR) ? "" : LIN1_OPT_ADDR + "| ") to replace the blank address column with the pipe delimiter. So that a row that would consist of:

Customer Number,Name,Address Line1,City,State

12345,ACE HARDWARE INC. ,801 Rockefeller St.,New York, New York
56789,BUILDING SUPPLY INC., ,Wichita, Kansas

Should end up as:

12345|ACE HARDWARE INC.|801 Rockefeller St.|NEW YORK|NEW YORK
56789|BUILDING SUPPLY INC.||Wichita|Kansas

When I run the data flow to create the flat file the file contains the following:


12345|ACE HARDWARE INC.|801 Rockefeller St.|NEW YORK|NEW YORK
56789|BUILDING SUPPLY INC.| | |Wichita|Kansas


Can anyone tell me what I am doing wrong?

Thanks.

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Derived Column Editor In SSIS

Feb 8, 2008

























I need to check if the date is Null then use today's date and if not do something else.

If RowModifiedOn IS NULL Then

GETUTCDATE()
ELSE

DATEADD("Hh",@[User::TimeZone],RowModifiedOn)
End If

What do I do wrong here? Can I do something like it?

RowModifiedOn == NULL ? GETUTCDATE() : DATEADD("Hh",@[User::TimeZone],RowModifiedOn)

Thanks.

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Derived Column Transformation Editor Question

Aug 30, 2006

Help...

I'm having trouble coming up with a valid expression in my derived column transformation editor that tests the input column for NULL and responds something like this:

if[message] isNull then "NA" else [message]

where [message] is the input column.

Thanks!





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Derived Column Transformation Editor Question

Aug 30, 2006

Help...

I'm having trouble coming up with a valid expression in my derived column transformation editor that tests the input column for NULL and responds something like this:

if[message] isNull then "NA" else [message]

where [message] is the input column.

Thanks!





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SSIS - Derived Column Transformation Editor Expression

Aug 23, 2007

I am trying to put the following as an expression in the SSIS Derived Column Transformation Editor.

DATEADD(DAY, DATEDIFF(DAY, 0, GETDATE()), 0)

It is not allowing it. This works fine in a regular SQL statement.

Does anyone know how I can get this to work?

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How To Assign Null In Derived Column Transformation Editor

Mar 28, 2007

Dear friends, can any one tell me how to assign null to the expression value in derived column transfromation editor?

thanks,

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Rounding To 2 Decimal Places In Derived Column Transform Editor

May 15, 2008

I want to replace the contents of a value column with itself but rounded to 2 decimal places.

The current column is a double and I have tried to perform this using the following expression but it fails to work.






Code Snippet

Round(cc_vl,2)
How should I achieve this?

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Problem With Expression Window In Derived Column

Jan 10, 2007

Hi,

i am facing problem to dervie one column value from another column using either if and case statements in expression window of dervived columns transformation.

let me give the exapmle. i get 1 column from source system name as "col a" and i want to insert 2 columns into my destination as col A and col B. based on the values of col A i want to derive the values of col B,like if col A value is 0 then col B value is Good else BAD.

Can any one asssit in this regard how to achive it?? and is it possible to use IF and CASE statement in this dervived column tranformation???





Sreenivas

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Function That Works In Sql Server Management Studio Does Not Work In Derived Column Transformation Editor

May 12, 2007

Hi

I'm a relative SQL Server newbee and have developed a function that converts mm/dd/yyyy to yyy/mm/dd for use as in a DT_DBDATE format for insert into a column with smalldatatime.



I receive the following erros when using the function in the Derived Column Transformation Editor. First, the function, then the error when using it as the expression Derived Column Transformation Editor.



Can anyone explain how I can do this transformation work in this context or suggest a way either do the transformation easier or avoid it altogerher?



Thanks for the look see...

******************************

ALTER FUNCTION [dbo].[convdate]

(

@indate nvarchar(10)

)

RETURNS nvarchar(10)

AS

BEGIN

-- Declare the return variable here

DECLARE @outdate nvarchar(10)

set @outdate =

substring(@indate,patindex('%[1,2][0-9][0-9][0-9]%',@indate),4)+'/'+

substring(@indate,patindex('%[-,1][0-9][/]%',@indate),2)+'/'+

substring(@indate,patindex('%[2,3][0,1,8,9][/]%',@indate),2)



RETURN @outdate

END

********************************



And the error...



expression "lipper.dbo.convdate(eomdate)" failed. The token "." at line number "1", character number "11" was not recognized. The expression cannot be parsed because it contains invalid elements at the location specified.

Error at Data Flow Task [Derived Column [111]]: Cannot parse the expression "lipper.dbo.convdate(eomdate)". The expression was not valid, or there is an out-of-memory error.

Error at Data Flow Task [Derived Column [111]]: The expression "lipper.dbo.convdate(eomdate)" on "input column "eomdate" (165)" is not valid.

Error at Data Flow Task [Derived Column [111]]: Failed to set property "Expression" on "input column "eomdate" (165)".

(Microsoft Visual Studio)

===================================

Exception from HRESULT: 0xC0204006 (Microsoft.SqlServer.DTSPipelineWrap)

------------------------------
Program Location:

at Microsoft.SqlServer.Dts.Pipeline.Wrapper.CManagedComponentWrapperClass.SetInputColumnProperty(Int32 lInputID, Int32 lInputColumnID, String PropertyName, Object vValue)
at Microsoft.DataTransformationServices.Design.DtsDerivedColumnComponentUI.SaveColumns(ColumnInfo[] colNames, String[] inputColumnNames, String[] expressions, String[] dataTypes, String[] lengths, String[] precisions, String[] scales, String[] codePages)
at Microsoft.DataTransformationServices.Design.DtsDerivedColumnFrameForm.SaveAll()

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Integration Services :: How To Declare Multiple Derived Column In SSIS Derived Column Task

Jul 22, 2015

how to declare multiple derived columns in SSIS Derived Column Task in one attempt.as i have around 150 columns coming from Flat file. I had created the required Expression in Excel and now i want add those in derived column task but its allowing only 1 expression at a time.

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Is Possible To Call A VB.NET Function Within Derived Transformation Editor

Mar 5, 2008

Hi,

In a nut shell I want to be able to instruction some Data Analysts on how to modify SSIS packages using the simpliest solutions possible. This is because there are many different data sources and some of these data sources have a huge number of fields, and yes you guessed it these data sources are subject to change on a regular basis.

A very common task they will need to do is to modify an SSIS package to do a to transform of a source date string format of "YYYYMMDD" into a date data type field within a table.


Similar threads have advised the use of the Data Flow Transformations->Derived Column for this sort of thing.

So within the Expression Text box I have inserted the following SSIS compatible SQL to convert the above string into a british format date data type; -




Code Snippet
(SUBSTRING(DOB_SRC,8,2) + "/" + SUBSTRING(DOB_SRC,5,2) + "/" + SUBSTRING(DOB_SRC,1,4))





But really what I want to be able to do is to instruct the Data Analysts to do is something like; -

ConvertTextToDate(DOB_SRC)

Where I previously defined that behaviour of ConvertTextToDate as a public VB.NET function.

Can someone please help. I'm pretty certain I'm not the only one with this type of requirement.


Thanks in advance,

Kieran.

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Integration Services :: Add New Column Based On Existing Column Using Derived Column Task?

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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Cast/Convert Mmddyy In String To New DB_DATETIMESTAMP Column In Derived Column Transformation

Mar 5, 2007

Hi,
I have dates in "mmddyy" format coming from the sources and they are older dates of mid 80s like 082580 for instance.

When I cast it this way (DT_DBTIMESTAMP) Source_Date , It says ok but throws a runtime error.

When I hardcode a date in same format, (DT_DBTIMESTAMP) "082580" , It becomes red (an indication of syntax error) . Please note that we use double quotes in expressions in Derived Column Transformation; So an anticipation that using double quotes over single ones would be the syntax problem would be wrong.



Any help in this will sincerely be appreciated.


Thanks

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Derived Column Usage When Column Does Not Exist In Source (but Exists In Destination)

Sep 11, 2007





Posted - 09/10/2007 : 15:53:26



Hey all - got a problem that seems like it would be simple (and probably is : )

I'm importing a csv file into a SQL 2005 table and would like to add 2 columns that exist in the table but not in the csv file. I need these 2 columns to contain the current month and year (columns are named CM and CY respectively). How do I go about adding this data to each row during the transformation? A derived column task? Script task? None of these seem to be able to do this for me.

Here's a portion of the transformation script I was using to accomplish this when we were using SQL 2000 DTS jobs:


'**********************************************************************
' Visual Basic Transformation Script
'************************************************************************

' Copy each source column to the destination column
Function Main()
DTSDestination("CM") = Month(Now)
DTSDestination("CY") = Year(Now)
DTSDestination("Comments") = DTSSource("Col031")
DTSDestination("Manufacturer") = DTSSource("Col030")
DTSDestination("Model") = DTSSource("Col029")
DTSDestination("Last Check-in Date") = DTSSource("Col028")
Main = DTSTransformStat_OK
End Function
***********************************************************
Hopefully this question isnt answered somewhere else, but I did a quick search and came up with nothing. I've actually tried to utilize the script component and the "Row" object, but the only properties I'm given with that are the ones from the source data.

thanks in advance!

jm

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Altering Column Values Using Derived Column Component

Dec 21, 2007

Can anyone show how to alter the value in a column using DerivedColumn component when creating an SSIS package programatically.

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Derive A Column Based On Other Derived Column In A Table .. Is It Possible ?

Mar 25, 2008


Table structure as follows



Employee

Empno empname salary
commission



I want to have an other employee table named employee_modified

Empno empname salary
commission derived_column1(salary+commission)
derived_column2(derived_column1 + xxxx) and so on derive other
columns based on the earlier derived columns)

Is that possible to do it.. or am I doing something wrong.



something like



Select empno , empname , salary , commission,

(salary + commission) as derived_colum1 ,

(derived_colum1 + xxxxx) as derived_colum2 ,

(derived_colum2 + xxxxx) as derived_colum3

into employee_modified from employee

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Invalid Column References Editor

Mar 19, 2008



Hi All,

I'm pretty new with SSIS. I have written some custom component which will read from flat file and write it into database. Between those processes, there are other processes which will analyse and transform the data being transfered. Everytime, I remove a column from upstream component, I have to go through each component to fix up column reference mapping using Invalid Column References Editor. There are lots of clicking involves just to remove a column from upstream component. My package has about 15 components. I am just wondering, is there anyway for us to prevent that editor to pop up, instead fixing invalid column reference programatically in ReInitializeMetadata?

Thanks,
Will

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Can I Use * To Specify 'Output Column' For OLD DB Source Editor?

Dec 7, 2006



I am working on a situation similar to 'Get all from Table A that isn't in Table B' http://www.sqlis.com/default.aspx?311

I noticed that if one column's name of source table changes,(say Year to Year2) I have to modify all 'data flow transformations' in the task.

I am new to SSIS.



thanks! -ZZ

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Add Values To A Column With Derived Column Expression?

Feb 25, 2008

Hi, how are you?
I'm having a problem and I don't know if it can be solved with a derived column expression. This is the problem:


We are looking data in a a sql database.

We are writting the SQL result in a flat file.

We need to transform data in one of the columns.

For example: we can have 3 digits as value in a column but that column must be 10 digit length. So we have to complete all the missing digits with a zero. So, that column will have the original 3 digits and 7 zeros. How we can do that tranformation? We must do it from de the flat file or it can be a previous step?
Thanks for any help you can give me.
Regards,

Beli

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Advanced Editor Randomly Fails To Persist New Column Width

Sep 4, 2007

This one has set me back many, many hours on this project; it's about got me ready to dump SSIS & just roll a custom .NET solution in C#.

I need to create import packages for quite a few very wide flat files (130 - 180+ columns, not my design). Many of these columns have data > 50 characters long.

I change column widths on the data flow source using the Advanced Editor, via Input and Output Properties ==> Flat File Source Output ==> External Columns.

About 50% of the time, the changes vanish after clicking OK to dismiss the Advanced Editor. There is no warning message or output announcing that the editor failed to persist its changes, or that it set some columns' properties back to the defaults, or why. The column's widths just silently revert back to 50.

If the cause and resolution aren't known, does anyone know of a way to accomplish any of the following workarounds?


Create a data source connection by importing an external text schema defining the flat file's column names, data types and sizes, or
Change a property on multiple source columns en-masse, or...

Get at a text version of the file containing the Data Flow Component's definition, so we can edit wide import schemas without racking up thousands of mouse-clicks?Thanks! A virtual cheeseburger to anyone with answers.

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Derived Column

May 6, 2008

Hi, wondering if anyone can help me. I currently have a field that has a date and time in it in the format dd/mm/yyyy hh:mm:ss. Ideally I would like to get rid of the time part of it altogether but for it to still be recognised as a date as opposed to a string. However, I've been told that this is not possible in 2005, is this true? If this is the case, what would be the best way to set the time to 00:00:00 after the date for all records on that field?

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Derived Column

Jan 30, 2007

I have two columns made up of 4 digits numbers eg col1 1234, col2 9876

I want to create a derived column so i get a eight digit column, eg col3 12349876

I cannot seem to get the expression right, I seem to be always adding the value which i do not want, can someone help me out with the expression

Thanks

Robbie

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Derived Column

Dec 3, 2007

I am trying to transfer data from SQL Server 2005 table to another SQL Table. In the source table there is a field called Region [nvarchar(max)]. The values for these fields will be like APAC-China, NA-Racine, etc., i.e Region followed by the country name seperated by - symbol. I want the destination tablre with 2 fields Region[nvarchar(max)] and Country [nvarchar(max)]. I am using a Derived Column task to achieve the same.

Can anyone please help me out in doing this data conversion?

Thanks


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Derived Column

Nov 2, 2007

Hi,

I am doing a task which will get all data based on several base and crosswork tables. I used stored procedure to get the data, but the next step will be using derived column to massaging data, and to load to the destination database. Is there a way to do that since I must generate data on the fly?

Thanks,

Megan

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Derived Column Help

Jul 16, 2007

Hi Guys,



How can i put in a derived column the value of 3 columns? I've tried these:



[MyId]+[Paper1]

"[MyId]+[Paper1]"



but no luck. How can i put it right?



Thanks



Gemma

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Derived Column

Mar 31, 2008



I am trying to create a derived column from two separate fields. One is a date field in format of 2008-03-01 and one is a time field. In DTS I use to have something like this:

DTSDestination("TransactionDate") = cdate(DTSSource("DSRHDATI")) & " " & timevalue(DTSSource("DSRHTIME"))

I am trying to figure out how to do this in SSIS. I know I have to use a dervived column but can't seem to come up with the correct syntax. Any help would be apprecaited. thanks.

Stacy

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Calculating Column W/ Another Derived Column

Jun 6, 2007

Can someone help me with the following query? I need to take the derived value from one column and calculate another column with it.

SELECT UserID,

((SELECT COUNT(*) FROM HPN_LeadMatches)+(SELECT COUNT(*) FROM HPN_Painters)) As Total,

(SELECT COUNT(*) FROM HPN_Leads) / Main.Total

FROM HPN_LeadMatches As Main

The error i'm getting says is unkown column 'total'. Is there another way to accomplish this?

Thanks!!

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Deriving A New Column From Another Derived Column

Jul 26, 2006

In a Derived Column data flow transformation, why can't I refer to a derived column (added in that same transformation) in the expression for another derived column? It seems I am forced to chain 2 DC data flows, just to do something as conceptually simple as:

a = x + y; b = a²

On a related note: Can I define a variable that is scoped to each row? Can I bind a variable in an expression to avoid creating a new row, e.g.

let a = x + y; a²

as the expression for new row b?

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Conditional On A Derived Column

Jan 27, 2006

Hi everyone,

I have a quizzing application where users log in, answer questions, and are ranked relative to each other. For this final ranking, I calculate their score using this formula -

score = (correct Qs answered) * 150 / (total Qs answered) + (total Qs answered)

The SQL query that i use to get this info is -


Code:

SELECT TOP 50 username, (sum(correct) * 150 / count(1) + count(1)) AS score, count(1) as totalq
FROM questionsstats
GROUP BY username
ORDER BY score DESC



This works just fine.

However, on top of this I need to put an additional restriction that only users who have at least answered 20 questions be counted in. How can I do this? Adding a simple 'WHERE totalq > 20' does not work. I get the error "Invalid column name 'totalq'.".

Surely there must be a simple way to do this?

Thanks.

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SSIS Derived Column

Mar 6, 2013

Two questions regarding Derived Columns in SSIS

1. In a if else expression if condition is false how do you keep the value of the source column eg: Name == "" ? "Unknown" : Name
Above will change all the non blank values to Name and not the actual value
in the Name Column eg. John

2. I have a column (unicode string)that stores date and time (The source is flat file) Is it possible to write expression to select the 1st day of month based on that date, and use this derived column as input to a table with a datetime field.

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Derived Attribute Column

Apr 4, 2007

Hello, first time here, first time messing with SQL.

When creating a table in SQLServer2005 can you specify a column to be for a derived attribute. example a column monthlysalary and create a column that is a derived attribute - yearly salary. Is this done when creating the table and how is the syntax ?

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Help In Derived Column Transformation

Nov 3, 2007

Hi All

I m designing SSIS having Data Flow as

Flat File > Derived Column Transformation > Destination Table

but while transfering record from text file to table i need some logic here

my text file is
"ID"|"Name"
1012|"10AA"
1013|"10BB"

logic is 10 should be replace by variable VID = 98

I defined this veriable as int

My ID column in database is int and Name column is varchar(50)

I try here expression like
ID != 98 ? @[User::VID] : ID
it work fine

but for varchar column I am not able to do
I got error when i write expression
SUBSTRING(Name,1,2) != "98" ? [DT_STR, 50, 1252] "(@[User::VID])" + rest of value of column : [Name]

my final output in table should be like
ID..Name
98..98AA
98..98BB


Please help me out

T.I.A

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