How To Reference Dataflow Elements In A SQL Statement Embedded In A Lookup Transformation?
May 8, 2008
Hi guys,
I need to use a SQL statement to lookup a value from a SQL server database table that relates to a column in my dataflow.
Imagine a SQL database table called 'cars' with values of
Year | Description
2005 Ferrari 355
2005 Ferrari 355 Spider
2006 Ferrari 355 F1
In my data flow I have Year and Model eg.
Year | Model
2005 355
2006 355
In my SQL statement I want to select from the 'cars' table where the years match exactly but the 'description' is like the 'Model'. eg. %355%
So essentially, how do I construct the 'like' clause in the select statement to reference the 'Model' column please?
thanks for your help,
Chris
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Feb 21, 2008
I may have misunderstood how Lookupu works because it's not doing what I want.
From the OLTP datasource I have a long list of revenue items (from a SQL server database). I want to assign these to specific accounts as they are transferred into our accounting system. I have another table with a list of words to search for and which account they belong to.
For example if the OLTP source might be
Description - Amount
"Sales of cars"- "$20,000"
"Motorcycle sales" - "$15,000"
"Bike rentals" - "$2,000"
The account lookup table is like
Wordsearch - Account
"sale" - "ACCT_SAL"
"rental" - "ACCT_RENT"
So by looking up whether "wordsearch" is found in "desription" I should get an output of
ACCT_SAL - $20,000
ACCT_SAL - $15,000
ACCT_RENT - $2,000
Back in DTS I did this with an array and "If Instr" using VBScript in the Data Transformation Task. I'm sure there must be something in SSIS to do this - it should be something like a Fuzzy Lookup ?, but I'm drifting toward Script Component. Anyone got any ideas for SSIS
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Jun 19, 2007
Hello,
I have created SSIS package programmatically, I want to add Lookup transformation,
How can I add column from reference dataset to the transformation?
I have try to add new output column but it gives me an validation error, I write following coed to add new output column to lookup.
IDTSOutputColumn90 outputColumn = this.lookup.OutputCollection[0].OutputColumnCollection.New();
outputColumn.Name = col.Name;
outputColumn.Description = "Staging table output";
outputColumn.TruncationRowDisposition = DTSRowDisposition.RD_FailComponent;
outputColumn.ErrorOrTruncationOperation = "Copy Column";
outputColumn.SetDataTypeProperties(col.DataType, col.Length, col.Precision, col.Scale, col.CodePage);
Please suggest other way to add column from reference dataset to transformation output.
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Mar 31, 2008
The logic I am trying to recreate via SSIS is the following SQL statement:
insert into db3.dbo.targettable1 -- Target database table
(SiteC,
Objecte,
Attrib1)
select distinct ?,
?,
from ? -- Source database table
join dbo.targettable2 c1 -- Target database table
on c1.Alias = ? and
c1.CSetID = ? and
c1.FacID = (select f.PFacID
from dbo.Fac f
where f.FacID = ?)
where not exists (select * from dbo.targettable2 c -- Target database table
where c.Alias = ? and
c.FacID = ? and
c.CSetID = ?)
I have an OLE DB Source that consists of an expression to approximate the following portion of the Above Select statement:
Select ?,
from ? -- Source database table and
The package has 2 global variables User:CSetID and User::FacID whose scope is global to the package and whose values are set within a Foreach Loop Container outside of the Data Flow Task
I was trying to reference the 2 global variables within the Looup Transformation to recreate the following portion of the SQL statement.but encounter errors:
join dbo.targettable2 c1 -- Target database table
on c1.Alias = ? and
c1.CSetID = ? and
c1.FacID = (select f.PFacID
from dbo.Fac f
where f.FacID = ?)
In the Advanced Editor window of Lookup Transaction
select * from
(select * from [dbo].[targettable2 ]) as refTable
where [refTable].[Alias] = ? and [refTable].[FacID] = ? and
[refTable].[CSetID] = ?
Is there away to reference global variables in a Lookup Transformation that are set outside a Data Task Flow?
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Jul 1, 2015
My source has 2.2 million of records. I'm performing the incremental load.In the lookup transformation i used the destination table for the reference using Full cache mode.For the first time package executed successfully but when i executed the package second time, Suddenly Package hangs while running.Than i truncate the data from the destination table and restart the SQL Server Services.After doing all this i executed package again and it worked but when i executed package second time, again package hangs up .I have 8GB RAM and i5 2.5 GHz Processor laptop.
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Mar 30, 2006
I am writing a custom dataflow transformation component and I need to get the name of the preceeding component.
I have been trying to find a way to get a reference to the Package object, MainPipe object or IDTSPath90 object (connecting to the IDTSInput90 of my component) from my component because I think from there I can get to the information I want.
Does anyone have any suggestions?
TIA . . . Ed
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Oct 22, 2013
I need to check the value of a column being pulled from an embedded select in the WHERE clause of a script but can't figure out how to do it. The script looks like this:
SELECT
LIST_ID,
NAME,
ADDRESS
(SELECT ANSWER FROM VALID_ANSWER WHERE VALID_ANSWER.LIST_ID = VIEW_LIST.LIST_ID) AS ANSWER
FROM VIEW_LIST
WHERE ANSWER = 'No'
The syntax above works in Oracle but in SQL Server I receive the following error: "Invalid column name 'OHIP'."
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Nov 27, 2006
I've created a custom data flow tranformation and it isn't showing up in the Tool Box Items to be added under the Data Flow Items tab (right click on tool box, 'Choose Items...', then clicked Data Flow Items).
I have done the following:
signed the assembly,
added to GAC,
copied the dll to C:Program FilesMicrosoft SQL Server90DTSPipelineComponents.
It worked previously when I was just starting out, however now I cannot see it. What would cause it to not show up? Everything compiles fine. How would I determine how to fix it so that it shows up?
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Oct 26, 2006
Hi there
I'm getting into trouble everytime I want to setup a dataflow containing 2 or more flows, where I want to make a lookup into 1 other table.
This fails, of some reason I do not know of.
ex.
Table 1 -> Lookup Currency Table -> Table2 with currency
Table 3 -> Lookup Currency Table -> Table 4 with currency
One of the lookup will fail.
How do you avoid this?
/Bjarne
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Jan 22, 2008
Hello,
How would you do a log in a massive rows loading, I'm having problems because every row error(because of casting, format, lookup) in a transformation task is redirected to a text file as a log, this is ok when only exist one error by row, but in the case when I have two errors in the same row detected by diferents transformation tasks only the first one is reported to the text file, I have to wait to the second information load, after I correct the first error, to find the second one, I need to validate as many errors exists by row in the same load...
which component or which strategy can I use in a SSIS Packge to achieve this?
thanks
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Apr 18, 2007
I can successfully get an Oracle sequence value using an "Execute SQL Task" transform. I need to, however, be able to get the same type of value from within a dataflow. I've tried the "OLE DB Command" and the "Lookup" Transform without any luck.
With the lookup transform I run into the following problem. First of all for those of you who know about the Oracle Sequence it just returns the next value from a sequence generator using "mysequence.NEXTVAL". The lookup transform won't just return a value without providing a link. So what I attempted to do was create a derived column with a value of "0" and use the following SQL command in my lookup ( SELECT mysequence.NEXTVAL, 0 AS DUMMY from DUAL). I then linked the derived column to the DUMMY column and it appeared to work. I was able to get the sequence. However, it appears to cache the value and so for each row the sequence is the same and doesn't increment.
I then tried to unsuccessfully play around with nocache but had strange errors about "not a valid sql statement".
I then also tried the OLE DB Command with a SQL statement "SELECT mysequence.NEXTVAL FROM DUAL" but couldn't get that to work.
Does anyone have any ideas or recommendations. Please keep in mind that I HAVE to get the NEXTVAL from Oracle as this is a mandatory requirement since the source is Oracle Applications ERP and I can't make up my own sequences in SSIS or update that sequence after the fact since many other applications could be using that sequence besides me.
thanks
John
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Jan 17, 2007
Hi,
I am creating dataflow tasj using following
Imports Microsoft.SqlServer.Dts.Runtime
Imports Microsoft.SqlServer.Dts.Pipeline
Imports Microsoft.SqlServer.Dts.Pipeline.Wrapper
These refer to Microsoft.SqlServer.DTSPipelineWrap.dll and Microsoft.SQLServer.DTSRuntimeWrap.dll. While these assemblies were already there in my dev machine I don't find these files in production enviornment for SQL server 2005. I am refering these assemblies from following path in my local machine : C:Program FilesMicrosoft SQL Server90SDKAssemblies.
How to install these assemblies in prod env, offcource one option is to copy it and then put it in GAC thru script . Why does not it gets installed while installation of SQL server 2005. Are these assemly dependent on SP1 ?
Thanks
Mohit
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Apr 25, 2006
I Can't reproduce the error if I run the package stand-alone.
I'm using the same lookup call (same table, etc.) in 2 packages that are running in parallel (called by a parent package).
[LKP_UnderwriterId [72283]] Error: An OLE DB error has occurred. Error code: 0x80040E05. An OLE DB record is available. Source: "Microsoft OLE DB Provider for SQL Server" Hresult: 0x80040E05 Description: "Object was open.".
Anyone seen this one?
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Aug 1, 2007
Hi All,
I am doing something really simple and it doesnt work, may be I am missing something, What I am trying to accomplish is to load a fact table using lookup transaformation, however my source data was different from the data in my dimension (or the datatype ) I had to use a data conversion task before my lookup , so the data flow is something like this source -> Data Conversion -> Lookup -> destination , I am getting an error at my lookup task where it says the "[Lookup [82]] Error: Row yielded no match during lookup". and then it just fails. I know for sure that there has to be matching data. donno what is it that I am missing.
Thanks
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Jan 8, 2007
Is there a way to ignore the unmatched rows using Lookup without creating another destination (Error Transformation for red connector)?
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Nov 27, 2007
Hi,
I am totally new to SSIS.
I need an example of how to use a Lookup transformation. Basd on that i need to lookup for some recs and delete records from transaction table. I have used the Execute SQL task for this and i am able to achive my requirement. But now i am using XML configurations for Connection Managers and for that very reason i dont want to hard code the catalog names(database names) inside my Execute SQL task.
Can any one suggest me how to do the same using a Lookup transformation or any other.
Any suggestions will be greatly appreciated.
Thank Q,
priya
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Dec 24, 2007
Hi,
I have a Dataflow task which loads data from a flat file to a Fact table named Inventory , doing a dimensional Key lookup with DIMStores - which is the dimension table for stores information.
If I have some rows in the flatfile whose 'Store' column doesnt have a corresponsing key in the DIMStores table, I want to insert all these stores in to DIMStores table and then update the Inventory table accordingly ..
Any idea how do to this ?
Thanks in Advance,
Sun
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Feb 27, 2008
I have a question based on Lookup Transformation component. If using Lookup component, the data cannot be NULL for available columns mapping. How about I want to keep the NULL value like outer join instead of inner join? Is there any way to do since I have several Lookup components inside of my dataflow?
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Mar 27, 2006
Hi Everyone,
I'm trying to perform a lookup transformation. But the deal is, I have this one value that I am passing into the transformation, but I would like to gather all values that match the value I put in....does the lookup transformation do this? I tried it, and it appears as if it only returns one value for the one input. After the lookup, I have an access OLE DB destination setup...so I can capture all those values that corresponds to that one value I passed into the lookup. Does anyone have any ideas on how I can go about this?
Thanks!
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Jun 9, 2006
Hi there,
This seems a bug to me. Or does anyone has a logical explanation that escapes me?
When in SSIS Designer Version 9.00.1399.00 I add output columns (numeric 4,0 ) to a scriptcomponent and fill them with valid numeric data in thescript I get a database error 'invalid number' when I use these columns in an OLE db Command-transformation . This errormessage disappears when I replaces those columns by a dataconversion to the datatype they originally have.
Derived Column Name Derived Column Expression
STATUS_DEF Replace 'STATUS_DEF' (DT_NUMERIC,4,0)STATUS_DEF
Maybethis info is usefull for somebody else who can't figure out wathever he's doing wrong.
Paul Baudouin
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May 11, 2000
I have a question. I'm using a lookup table which contains descriptions for a field from one of my tables. I have added a lookup query that looks like this:
SELECT STORE_DESRIP, BANNER, STORE_ID
FROM `stores.txt`
WHERE (STORE_ID = ?)
My main table (stagging) contains the store_id field. What I want to do is populate my destination fields (Store_descriptin and Banner) from the lookup table, based on the Store_id. I have written an ActiveX script that looks like this:
Function Main()
DTSDestination("Store_id") = DTSSource("store_id")
DTSDestination("Store_description") = DTSLookup("storelookup").Execute(DTSSource("store_ id")).value
Main = DTSTransformStat_OK
End Function
I receive an error when I try to test this script. It complains about line 8, which is the line that contains the DTSLookup function. Does anyone have any ideas what I'm doing wrong?
The process I see here is that when it comes to populating the "Store_description" field is will look the lookup table and based on the store_id, pass the description back. I would also like to add another destination field into this script, but won't until I resolve this.
Thanks for yoour support.
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Nov 8, 2006
Hello,
I have a table like this:
Customer
Group
A
10
B
20
I need to do a translation of "group" to €ślocal group€?:
Customer
Group
Local Group
A
10
11
B
20
21
When a match is found, the group code should be replaced by the local group code ... but, when no match is found the group code should stay.
Is there any way to do this using Lookup ? I tried but when you set the error output to ignore it replaces the value that has no match with a NULL value. Maybe there is another way to get this done with or without the lookup component ?
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Mar 31, 2008
I have a lookup transformation that retrieves a key for a certain column of values, in this case, a name. So, I go in to the lookup table with a name and come out with its key. I had it working and then I added new entries to the lookup table for a bunch of new names. Now, for some reason, I am not getting the matches for the new names. But I am still getting the matches for the names that existed before I added the new ones.
I'm wondering if the lookup transformation is using the old set of data and some how not picking up the new names. Do I have to trigger something in the lookup transformation to let it know that the lookup table data has changed?
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Sep 21, 2006
Hello all,
I needed to lookup some table values based on a join of two fields...
I've configured the lookup transform to get the values via a SQL statement to minimize loading time.
However, when creating the relationships between the input columns and the lookup columns I receive following error:
input column [BATCH_ID] has a datatype which cannot be joined on
I've checked both input and lookup columns, both are of type DT_R8... Both columns in the different tables do have the same datatypes
Any idea how to solve this problem??
Thanks in advance
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Oct 16, 2007
How to compare NULL to NULL in Lookup transformation?
I have a column (key) that has NULL value
and In my look up table, i assign NULL to -1, so i can get -1 when I join key to CD ( in lookup) ...
Num CD
-1 NULL
1 12
2 56
but when i run my package I keep getting no matching record.. i thnk it;s because of NULL value...
how can I resolve this?
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Dec 10, 2007
I've been going round in circles trying to understand what design I should use for a particular transformation/lookup problem I have. Would appreciate a few pointers.
On the data flow, I can create the data source easily with a SQL Query that returns 4 columns...
eg. myDb.dbo.Table1
Col1,
Col2,
Col3,
Col4
The end result at the Destination is:-
myDb.dbo.Table2
Col1,
Col5
Table1.Col1 maps directly to Table2.Col1 -- easy
Table2.Col5 is a result of a lookup query to different tables in the same db based on the value of Table1.Col1, Table1.Col2 & Table1.Col3.
I've already had problems with the Lookup component that forced me to give up using it because it wouldn't adequately support parameters. I was forced to use the Script component instead. However, this problem is a bit different because I don't need to try and reference variables as parameters and, instead, I need to use the values from the source query (Col1, Col2 & Col3).
Suggestions?
Thanks in advance,
Clive
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Jul 2, 2007
Hi,
There is one data flow task in the package. I have a column in the input set called "ID". The total number of rows in the input set is > 50000.
There is one table in the database which has the description for all the IDs. I need to get the "Description" value from the database for each row. The table contains nearly 12 lack records.
For that I am using lookup transformation. In lookup, I specified the query and column mapping and I got the new column "Description".
Here is the problem.
while running the package, the lookup is getting all the 12 lack rows from table and then it is matching the rows.
It is taking huge time.
Can any one suggest me how to improve the performance of this situation?
Thanks in advance.
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Oct 22, 2007
Hi all
when using advanced tab in lookup transformation ?, for whatany suggest i will be appreciated , thanks in advance
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Mar 6, 2007
Hi,
I just wanted to know if there is any way to Allow Null values while doing a lookup on a table in SSIS.
Let me elaborate the situation...
I have a flat file source that has a field called 'code'. I want to lookup in a code table to see if the code in the file is a valid code but the flat file may contain a NULL value as a 'code' (i.e. zero length string which treated as NULL by my package).
My problem is, the SSIS package tries to search for the NULL in the table and the lookup fails and an error is logged as per the business logic but actually NULL is also an acceptable value and the error should not be logged.
I tried inserting a NULL value in the lookup column but that doesn't work. I am not sure but I think I have read somewhere that two null values cannot be compared for equality. I cannot use conditional split to check the null value because I have to use a large number of lookups and a conditional split everywhere will mess up the things.
Is there any way to solve this problem?
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Oct 15, 2007
I have the following query:
SELECT EMPID,EMPNAME from EMPLOYEE
where EMPID = (SELECT MAX(EMPID) from EMPLOYEE group by EMPNAME,insert_date)
Here one can use above query in Dataflow of SSIS and specify SQL to create temporary table and later can use as lookup to join to other table.
Is there any way in SSIS to directly do the MAX of EMPID in lookup and join to the main source table.
Any help is really appreciated.
Thanks.
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Nov 30, 2006
Hi,
Here is my problem for a lookup transformation:
I have an input flow with dates and fields like this :
ID BEGINNING_DATE ENDING_DATE
1 12/01/2006 12/16/2006
and a reference table like this:
ID PRICE BEGINNING_PRICE_DATE ENDING_PRICE_DATE
1 400 11/28/2006 12/03/2006
1 500 12/03/2006 12/06/2006
1 600 12/06/2006 12/09/2006
I have to get the intersection periods between the two tables joining on ID. I would like to have this result flow :
ID BEGINNING_DATE ENDING_DATE PRICE
1 12/01/2006 12/03/2006 400
1 12/03/2006 12/06/2006 500
1 12/06/2006 12/09/2006 600
I'm using a lookup transformation and modifying the SQL instruction in advanced tab like this:
select *
from
(select * from [dbo].[Price]) as refTable
where [refTable].[ID] = ?
and (? between [refTable].[BEGINNING_PRICE_DATE] and [refTable].[ENDING_PRICE_DATE]
or ? between [refTable].[BEGINNING_PRICE_DATE] and [refTable].[ENDING_PRICE_DATE]
or ([refTable].[BEGINNING_PRICE_DATE] between ? and ?
and [refTable].[ENDING_PRICE_DATE] between ? and ?))
In that case I have to define 7 parameters:
ID : parameter0
BEGINNING_DATE : parameter1, parameter3, parameter5
ENDING_DATE : parameter2, parameter4, parameter6
My problem is that the transformation looks for only one matching element and outputs 0 or 1 row per input row... In that case the 3 rows of my lookup table are matching with the row in my input table, but I have only the first one.
How could I do to resolve my problem?
Thanks... I hope it's clear...
Arnaud.
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Mar 6, 2008
I used to use Lookup Transformation for my SSIS, now I am having problem and cannot find the problem. I have my source table, one lookup to join source column to my lookup column as L1. I then have another lookup to join L1 to L2, and will show L2. It seems not working. I used to have source to join several lookup and get different Li, not this one. Any help?
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Jan 11, 2006
Has anyone else noticed this? I want to be able to use a paremter in my reference table of my Lookup Transformation. I couldn't find any way for the dialog to accept SQL with a parameter so I checked on MSDN How to: Implement a Lookup Using the Lookup Transformation and sure enough in the article is says to click on the Parameter button. I don't have a Parameters button on this dialog. Error? Is this possible?
6. In the Lookup Transformation Editor, on the Reference Table tab, select a connection manager in the Connection manager list, and then do one of the following:
Click Use a table or a view, and then select either a data source view, a data source reference, or an OLE DB connection manager.
Click Use results of an SQL query, and then build a query in the SQL Command window, or click Build Query to build a query using the graphical tools that the Query Builder provides. Alternatively, click Browse to import an SQL statement from a file.
If the query includes parameters, click Parameters to map parameters to variables. For more information, see How to: Map Query Parameters to Variables in Data Flow Components.
To validate the SQL query, click Parse Query.
To view a sample of the data that the query returns, click Preview.
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