Insert Into Dimension Table, If Not Found With Lookup...
Jul 5, 2006
Hi there!
I have some troubles getting done a lookup... data i get from a legacy system has to be cleaned up and split up into normalized form. i get invoice data and want to split up invoices into a separate table as customers. therefore i lookup if the customer of the current line is not already in my newly created customer-table. if it isn't there (error output of lookup transformation) i insert it into the customer-table.
The problem is that after the customer is inserted into the customer-table, it still is not found by the lookup transform because the lookup uses caching to hold the reference table (and so is the exact same customer inserted again and again and again). Is there any way to disable caching and let the lookup transformation do a select for every new row it gets? or at least refilling the cache if some event happens?
Many thanks in advance!
Wolfgang
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Jan 4, 2005
All,
Just wondering if anyone is aware of a SQL server shareware utility that places a front end on a table to manage insert, update, and delete of rows on a lookup table.
We can certainly write this but before reinventing the wheel I figure I'd ask and see.
Many Thanks,
Isaac
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Oct 12, 2006
First, I'm very new to SSIS, so forgive any stupid questions.
I'm trying to normalize some data by creating rows in a dimension table as I find new values in the original table.
My first thought is to use a Lookup to replace string values with id's to the Dimension table, and when the Lookup fails, insert the value into the Dimension table with a new key.
Does that make sense? This would be relatively easy to do with TSQL, but surely there is a way to do this in SSIS.
Thoughts?
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Sep 1, 2015
I'm using SQL-Server 2008, Visual Studio 2013. I've got created Linked Object (Linked Measure) in Cube2 from Cube1. Everything was fine, but I edited Measure in Cube1, as I found documentation there is no ability to refresh Linked Objects so I deleted and recreated Linked Measure on Cube2. After It I can't process Cube2, receiving following errors:
MdxScript(Cube2) (10, 24) The dimension '[Dim]' was not found in the cube when the string, [Dim], was parsed.The END SCOPE statement does not match the opening SCOPE statement.
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May 8, 2007
Hi all,
Maybe someone here can help me out: I have a Kimball type II dimension, where i track changes in a hierarchy. Each row has a RowStartDate and RowEndDate property to indicate from when to when a certain row should be used.
Now i want to load facts to that table. So each fact will have a certain date associated with it that i can use to lookup the right Id (a certain SourceId can have mulitiple integer Ids when there are historic changes) and then load the facts.
Is there a building block I can use for that? I could do this with SQL scripts but the client would prefer to have as much as possible done in SSIS. The Lookup transformation will only let me specify an equal (inner join where A=B) join, but i need equal for one column (SourceId) and then >= and <= (RowStart and RowEnd) to find the right row version.
Any ideas? Thanks in advance,
John
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Oct 31, 2007
We did some "at scale" fuzzy lookup tests today and were rather disappointed with the performance. I'm wanting to know your experience so I can set my performance expectations appropriately.
We were doing a fuzzy lookup against a lookup table with 25 million rows. Each row has 11 columns used in the fuzzy lookup, each between 10-100 chars. We set CopyReferenceTable=0 and MatchIndexOptions=GenerateAndPersistNewIndex and WarmCaches=true. It took about 60 minutes to build that index table, during which, dtexec got up to 4.5GB memory usage. (Is there a way to tell what % of the index table got cached in memory? Memory kept rising as each "Finished building X% of fuzzy index" progress event scrolled by all the way up to 100% progress when it peaked at 4.5GB.) The MaxMemoryUsage setting we left blank so it would use as much as possible on this 64-bit box with 16GB of memory (but only about 4GB was available for SSIS).
After it got done building the index table, it started flowing data through the pipeline. We saw the first buffer of ~9,000 rows get passed from the source to the fuzzy lookup transform. Six hours later it had not finished doing the fuzzy lookup on that first buffer!!! Running profiler showed us it was firing off lots of singelton SQL queries doing lookups as expected. So it was making progress, just very, very slowly.
We had set MinSimilarity=0.45 and Exhaustive=False. Those seemed to be reasonable settings for smaller datasets.
Does that performance seem inline with expectations? Any thoughts to improve performance?
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Oct 26, 2015
When i add a dimension to the cube dimension without any relation in my dimension usage to any measure group my units are going down.However when i remove the dimension from the cube am getting the correct values.
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Jan 16, 2006
Hi
I'm trying to put together a integration package that loads in type 1 dimensional data. If the item is new then the data is inserted if it already exists then it is overwritten. My approach has been to use the lookup operator to match the source values against a generic mappings table. The data that is matched goes off into the error flow and is inserted as new rows in the dimension table. The matched lookup rows are sent through into an update operator. the problem comes when there are no new rows for the lookup operator to find it still want to do the inserts and so exits with an error code.
I tried to change the data flow so that it uses and outer join and conditional split to decide what rows are matched and what are new, however when there are no new rows it reaches the inserts and exits with an error again.
Is containing the logic for insert and update in the one data flow a poor approach? should the conditional processing logic be placed in the control flow?
For the Oracle people out there all I'm trying to do is a MERGE!!! there must be an easier way
Cheers
Al
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Aug 11, 2015
I am working on a model where I have a sales fact table. Each fact record has four different customer fields (ship- to, sold-to, payer, and bill-to customer). I have one customer dimension table that joins to the sales fact table four times (once for each of the customer fields above). When viewing the data in Excel, I would like to have four hierarchies (ship -to, sold-to, payer, and bill-to customer) within Customer.
Is there a way to build hierarchies within my Customer dimension based on the same Customer table? What I want is to view the data in Excel and see the Customer dimension. Within Customer, I want four hierarchies.
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Apr 28, 2008
Hi,
I have set a common lookup + insert dataflow. but I'm having a problem when the business key comes duplicated in the source file. This file has transactions and each transaction has a transaction code which represents what kind of transaction it is.
So in the same file I can have 2 or more transactions with the same transaction code.
I have a dimension table wich stores kinds of transactions with a business and surrogate(identity) key.
The lookup sends through the error path every record it doesn't find its business key. but since I may have 2 or more transactions with the same business key in the same source the lookup sends them every time so I end up with duplicated business keys.
I have tried setting the max insertion commit size to 1 but it doesn't work. The look up won't find the new business keys.
I hope it's clear. thanks
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May 27, 2004
Hi,
we have a problem with "one-to-many relations between fact table and dimension table". Take the example of table "LOGGEDFLAW" which is related one-to-many to the table "LOGGEDREASON. "LOGGEDFLAW" includes the column "FLAWKEY" and "LOGGEDREASON" includes the column "REASONKEY" and essentiallay the column "FLAWKEY" as foreign key. Now assume that we have the following records in there:
LOGGEDFLAW
1) FLAW1
2) FLAW2
LOGGEDREASON
1) REASON1,FLAW1
2) REASON2,FLAW1
3) REASON3,FLAW2
Now assume, that "LOGGEDFLAW" is the facttable and "FLAWCOUNT" is the measure with the source column "FLAWKEY" in which we want to count the number of FLAWs. As you see in the example the number of FLAWs is 1 for "FLAW1" and "FLAW2". Microsoft Analysis Server generates the value of 2 for the number of FLAWs "FLAW1" because of the one-to-many relationship to the table "LOGGEDREASON". In the attached ZIP File you find :
- a MDB File with the described example
- a screenshot from the cube constructed in AS
- a screenshot from the result table generated with AS.
The question: How is it possible to calculate the measure "FLAWCOUNT" correctly, ignoring the records generated by the one-to-many relationship?
Best regards,
Thorsten
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Mar 16, 2007
I have picked an exmple from this forum, to help me explain my current problem...
"I'm looking for a solution to import data from a flat file into an normalized data modell. To explain it a little simpler think about to following:
The Data Souce is a CSV-File with FirstName, LastName and Category. Sample data could be
Dirk; Bauer; sailing
Peter; Bauer; fishing
Marc; Bauer; reading
In my data modell I have defined the 2 tables "Person" and "Category":
Table "Person"
----------------
[PersonID] [int] IDENTITY(1,1) NOT NULL
[CategoryID] [int] NOT NULL
[FirstName] [nvarchar](50)
[LastName] [nvarchar](50)
Table "Category"
----------------
[CategoryID] [int] IDENTITY(1,1) NOT NULL
[CategoryName] [nvarchar](50)
Now I like to read my first row from the source and lookup a value for the CategoryID "sailing". As my data tables are empty right now, the lookup is not able to read a value for "sailing". Now I like to insert a new row in the table "Category" for the value "sailing" and receive the new "CategoryID" to insert my values in the table "Person" INCLUDING the new "CategoryID".
I think this is a normal way of reading data from a source and performing some lookups. In my "real world" scenario I have to lookup about 20 foreign keys before I'm able to insert the row read from the flat file source.
I really can't belief that this is a "special" case and I also can't belief that there is no easy and simple way to solve this with SSIS. Ok, the solution from Thomas is working but it is a very complex solution for this small problem. So, any help would be appreciated...
Thanks,
Dirk"
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=74752&SiteID=1
Could someone help me creating the dimension table?
Thanks!!
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Apr 2, 2007
I have a large flat file that comes to me. I first import the flat data in to a SQL table for ease of use. Then i put it into a more permanent table with the proper references to dimension tables. I want to build a dimension table out of information from my flat file. I have a dimension table with columns, [Org Client], and [Client#] where [org client] is the name of the client. Both of these columns appear in my flat file but i want to use only the client# in my permanent table. How extract distinct values of client # and [org client] into a dimension table?
My idea was to select distinct values of client# and use some type of foreach loop to go through each client# and use a query to select the TOP(1) values of [org client] where client# = x. Would this work and if so how do I go about setting this up?
I'm really hoping there is a simpler way than this. Thank you all for your time.
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Apr 1, 2014
I am stuck on finding a solution to transpose source data from a system via a metadata look-up table into a destination table. I need a method to transpose/pivot the source data into columns (which are by various data-types). The datatypes for each column are listed in a metadata table.
Source Data Table:
Table Name: Source
SrcID AGE City Date
01 32 London 01-01-2013
02 35 Lagos 02-01-2013
03 36 NY 03-01-2013
Metadata Table:
Table Name:Metadata
MetaID Column_Name Column_type
11 AGE col_integer
22 City col_character
33 Date col_date
Destination table:
The source data to be loaded into the destination table(as shown below):
Table Name: Destination
SrcID MetaID col_int col_char col_date
01 11 32 - -
01 22 - London -
01 33 - - 01-01-2013
02 11 35 - -
02 22 - Lagos -
02 33 - - 02-01-2013
03 11 36 - -
03 22 - NY -
03 33 - - 03-01-2013
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May 4, 2006
Hello,I have a query that I need help with.there are two tables...Product- ProductId- Property1- Property2- Property3PropertyType- PropertyTypeId- PropertyTypeThere many columns in (Product) that reverence 1 lookup table (PropertyType)In the table Product, the columns Property1, Property2, Property3 all contain a numerical value that references PropertyType.PropertyTypeIdHow do I select a Product so I get all rows from Product and also the PropertyType that corresponds to the Product.Property1, Product.Property2, and Product.Property3ProductId | Property1 | Property2 | Property3 | PropertyType1 | PropertyType2 | PropertyType3 PropertyType(1) = PropertyType for Property1PropertyType(2) = PropertyType for Property2PropertyType(3) = PropertyType for Property3I hope this makes sence.Thanks in advance.
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Dec 14, 2007
Hi
I am working as datawarehous architect with a large concern and i designed a datamart witha fact table surrounded by 5 dimension tables. My PM who do not know datwarehousing has abruptly changed my design and instead of 5 dimension tables has increased to 17 tables which just 1 column each in them.
This is hell of a design because if it is a single column dimension then there can not be any hierarchy in the dimension table , better will be to push this column as a fact.
What should I do now. Moreover he has asked me to not to use SSIS and code everything in stored procedure.
Please guide.
Jigjan
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Dec 30, 2007
While populating dimsnion table the requirement is that the 1st record in all dimension should be " Not Available"
and if the fact table has a null value for that dimension it shouldbe tied to " Not Available" record in dimension
Please help hwo to do both the things.
JJ
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Sep 13, 2006
I have a result set as follow
Jobid, ClassId, ClassValue
1 GroupName Joes Auto
1 EffDate 1/1/6
1 Userid XYZ1234
....
2 GroupName Sams Eatery
2 EffDate 2/1/6
2 UserID ABC0987
ETC...
I need
Jobid GroupName EffDate Userid
1 Joes Auto 1/1/6 xyz1234
2 Sams Eatery 2/1/6 abc0987
I can manipulate this in a pivot table for reporting however I need this to be a table for reporting by filterable searchable information. What can I do short of defining each field with case logic, or union queries.
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May 7, 2008
Dear all,
Now I create datawarehouse for my client, I have SSIS a lot for ETL process, I a problem that some fact table need to be updatetable and there is a lot of data of this, I need some efficent way to load this data to data warehouse.
I have read your article about SCD in SSIS (Slowly Changing Dimensions in SQL Server 2005).
I think the purpose of SCD for Dimension table. If I have some fact table that need rows to be updatetable can you give me an example, best practice, the efficient way or fastet way to load fact table that can be updatetable?
If you have link or link about this problem please reply my email. Thanks
My datasource from ORACLE and my datawarehouse in mssql2005
Regards,
Hendrik Gunawan
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Feb 6, 2008
Hi All,
What is the best way to move data from Online system tro data warehouse?
I have created 3 dimension tables(product,date and customer tables) and
I wanna create fact table and get foreign keys from dimension tables.
What is the best method to do that in SSIS?
thanks
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Apr 7, 2008
I have date and float in attribute in a dimension table. If deploy my cube and I try to create a report with RS, I can't format this data. The value seems to be a String so I have to do a CDate or a CDbl before formating it.
I have no problem when I try to format my measures.
Thanks for your help.
Cheers,
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Jan 13, 2005
Hi All,
I have a situation with a table that was created for a transactional
system with a 3 columns key. The table is similar to the following:
countrystatecitydescription
11221City A from country 1 and state 12
11321City A from country 1 and state 13
21422City B from country 2 and state 14
21522City B from country 2 and state 15
Now I'm trying to create a dts package that would allow me to build a
city dimension table with unique codes (keys) for each city. What kind of
transformation should I use to translate the old codes (based on the
country-state-city key) into the new ones and preserving the data
integrity?
Thanks,
Ignacio
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Jul 14, 2014
I know the type of Dimension but any real time example for Dimension table
1) Conformed Dimension
2) Junk Dimension
3) Degenerated Dimension
4) Role Playing Dimension
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Dec 19, 2014
I have a fact table with few flag columns.
What is the best way to bring them to dimension?
Do I need to create dimension(dummy) from fact table for each flag or all flags in single dimension?
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Aug 25, 2006
Hi All,
I am just curious to know how I can load data from a data warehouse to an Analysis Service Cube (both to the fact tables and dimensions).
Does any body have some way to achieve this?
I appreciate if any body provide me a good material which describe this scenario.
Sincerely,
--Amde
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Aug 17, 2015
Is it possible to design a Cube with a Dimension "DimEmployee" (SCD Type2) and Query the following: What "title" had the person "xyz" at time "2015-01-01"? - See Example data on Images.
I have also a DimTime with Day granularity. The DimEmployee is not at day granularity.
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Apr 19, 2006
I have a DTS package that has two steps. The first steps executes a sql statement that selects data into a temporary table. The next step emails the results of a "select * from #mytable" to me. I ran the job today and did not get an email from it. So, I then copied both statements to Query Analyzer and ran them in the same window. The SELECT query ran fine but the xpsendmail part gave me an error that #mytable does not exist.
This is my query
drop table #update_status
select col1,col2,col3
into #update_status
from mydb.mytable
go
EXEC master..xp_sendmail
@recipients = 'fkearney',
@query = 'select * from #update_status',
@subject = 'status updated',
@message = 'These records had a status update:',
@attach_results = 'TRUE', @width = 250
Any thoughts?
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May 26, 2008
Hi,
The scenario is the data comes from various sources and its staged into staging database. From this staging database it goes into data warehouse database. Everyday this staging database is truncated and repopulated from various sources.
I've a dimension table called DimCustomers which consists of around 300,000 rows and has lots of different types of SCD columns. It takes around 4-5 hours to load data from staging to this dimension table. Currently I'm using a For Loop container which uses a store proc to extract 15000 rows each time and populate my dimension tables. First couple of loops it goes off quickly but as and when the number reaches half of the count it slows down and hence it takes around 4-5 hours to load data.
What would be the best approach to populate this kind of dimension table.
Thanks
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Jul 12, 2006
Hi
I want to create a table that has a datetime column, data type=datetime and I want the date to start form 01/01/2004 00:00:00 to 01/01/2008 00:00:00 the increment will be by minute like
01/01/2004 00:01:00
01/01/2004 00:02:00
01/01/2004 00:03:00 and so on up to 01/01/2008 00:00:00
I will use this time dimension in bussiness objects.
please provide me with the SQL sript to do this.
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Feb 8, 2007
How do I pass back only one value, such as TotalJobPrice from the tblJobRecords when I know which JobID to Select. All I want is the TotalJobPrice returned from the UDF, not a record from the table. I can write a UDF that will return a table, but I don't know how to get the one field of data from that table of one row that can be returned from a UDF that returns a table. I want to be able to write something like this: @TotalJobPrice = fnTotalJobPrice(@JobID)
Hope that is clear.
Thanks in advance,
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Sep 13, 2007
Hi all, this is REALLY weird, I can t seem to make heads or tails of it. but from my understanding the each datatype has set contrstraint assigned to it ( example int datatype can only except non-decimal numeric values ) as well as a datetime datatype can only except a vaild date.
Though oddly i have found the following dates in a table ( in addtion the when aby kind of data operation is performed on the table sql returns the following error:
Server: Msg 8630, Level 16, State 1, Line 1
Internal Query Processor Error: The query processor encountered an unexpected error during execution.
Here are some of the dates that were present in the table:
DateColumn1
-----------
1900-01-01 857:44:45.813
1900-01-01 872:51:16.427
1900-01-01 872:54:57.440
1900-01-01 873:09:32.107
1900-01-01 873:13:10.560
1900-01-01 873:16:49.867
1900-01-01 888:27:00.640
DateColumn2
---------
-22063-05-18 00:00:00.000
-20285-02-03 00:00:00.000
In addtion there were some other columns that have had odd data in them(VERY WEIRD)
Char25Column
---------
ÃQ307000
ÃQ307000 ÃQ307000
ÃQ307000
ÃQ307000
Any Thoughs?
Thanks
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Sep 26, 2007
I'm working with an existing package that uses the fuzzy lookup transform. The package is currently working; however, I need to add some columns to the lookup columns from the reference table that is being used.
It seems that I am hitting a memory threshold of some sort, as when I add 3 or 4 columns, the package works, but when I add 5 columns, the fuzzy lookup transform fails pre-execute:
Pre-Execute
Taking a snapshot of the reference table
Taking a snapshot of the reference table
Building Fuzzy Match Index
component "Fuzzy Lookup Existing Member" (8351) failed the pre-execute phase and returned error code 0x8007007A.
These errors occur regardless of what columns I am attempting to add to the lookup list.
I have tried setting the MaxMemoryUsage custom property of the transform to 0, and to explicit values that should be much more than enough to hold the fuzzy match index (the reference table is only about 3000 rows, and the entire table is stored in less than 2MB of disk space.
Any ideas on what else could be causing this?
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Aug 29, 2006
I am looking for a good method to do table lookups in a 2003 SQL database. I am retrieving products from an item table and then want to do value lookups in related tables in the same database like category name, category type, brand name etc. These values are referenced in the item master file by guid links to related tables.I am using a datareader to loop through the Select records and then I am writing results to a tab delimited data file for a data conversion. I am limited to net 1.1 and so can't use the 2.0 executescalar for single lookups.What would be the more efficienct method to use?'Dim myItemData As New DataReader Dim myItemReader As SqlClient.SqlDataReaderDim myItemCommand As New SqlClient.SqlCommand Dim myConnection = New SqlClient.SqlConnection("server=sql01.xxx") myItemCommand.Connection = myConnectionmyItemCommand.CommandText = "SELECT ""mf_items"".""item_guid"", ""mf_items"".""item_description"", ""mf_items"".""item_wholesale_price"", ""mf_items"".""item_description_title"",""mf_items"".""item_cd"",""mf_items"".""category_guid"" FROM ""CDB006"".""dbo"".""mf_items"" WHERE ""mf_items"".""item_closed"" = 0 And ""mf_items"".""item_visible"" = 1 AND ""mf_items"".""item_available"" = 1"myItemCommand.Connection.Open()myItemReader = myItemCommand.ExecuteReader()Dim myfileout As StreamWritermyfileout = File.CreateText(Server.MapPath("out.txt"))myfileout.WriteLine("link" & vbTab & "title" & vbTab & "description" & vbTab & "price" & vbTab & "image_link" & vbTab & "category" & vbTab & "id")While myItemReader.ReadIf myItemReader.Item(4).ToString() > "" And Val(myItemReader.Item(2).ToString) > 0 Then'what method to to look up for example the category name using the category_quid referenced in the item master'Write out record for parts file
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