Loading a fact table
I am writing a stored procedure to load a fact table. Do we disable the primary key constraint on the fact table before we load the fact table.
The oracle version is 10g"10g" isn't a version since that can include 10.1.x, 10.2.x and there are many differences.
select * from v$version;
How do you if a table is partitioned.select table_name, partitioned from all_tables;
The partitioned column will have a 'YES'.
Similar Messages
-
Problem with loading fact table in OWB3i
Hi,
I have a problem while trying to load a fact table using OWB 3i. Let me explain the situation :
I have 2 dimensions: Customer, Product say.
I have loaded the dimension tables separately, successfully using different mappings from source tables.
Now I want to load the fact table with the corresponding warehouse keys from these dimension tables through lookup transformation.
When I try to bring to lookup transformations for the 2 dim. tables, it gives an error--"Source and target are bound to different data providers". Using 1 dim table and 1 corresponding lookup transformation , the fact table is successfully loaded.
How to load a fact table when there are more than 1 dim. tables using lookup ?Is there any other way of solving the same problem?
Any suggestion will be highly appreciated.
regards
DipanjanSimply, try joining source tables with the join operator. In wich way you can create a single source object into the mapping suitable to be connected with yours fact tables.
Greetings -
Load data from dimensions to fact table
Hi,
I have 10 dimension tables and one fact table. now i want to load data in to fact table from dimensions table. how i can do that.
Regards,
joyTo elaborate on "Mallee"'s answer, it's not good practice to load dimensional data into a fact table.
I guess what you mean is how to refer to dimensions when loading a fact table.
Simply refer to dimensions using lookups on the necessary dimensions, the lookup needs to be on the natural key you have that links facts to dimensions. Don't forget to use the dimension's surrogate key though when populating the fact table's foreign key columns pointing at the dimensions.
Hope this helps.
Cheers, Patrick -
Help Help : Error loading fact table
Hi
I am strugglinh since last 2 days .SSIS is giving me torrid time
I am getting error while loadding the fact table
[Destination Fact Table [1099]] Error: An OLE DB error has occurred. Error code: 0x80040E21. An OLE DB record is available. Source: "Microsoft SQL Native Client" Hresult: 0x80040E21 Description: "Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done.".
[Destination Fact Table [1099]] Error: The "input "OLE DB Destination Input" (1112)" failed because error code 0xC020907B occurred, and the error row disposition on "input "OLE DB Destination Input" (1112)" specifies failure on error. An error occurred on the specified object of the specified component.
[DTS.Pipeline] Error: The ProcessInput method on component "Destination Fact Table" (1099) failed with error code 0xC0209029. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.
Please help
I have already googled for this error and appied whatever tips were given.What other messages are you getting (warning, errors)?
Does the package fail with the first row inserted in the destination fact table?
One thing you could try is to change the error output of the destination component to re-direct rows in case of an error; then send those rows to place (file/table) where you can take a closer look. -
Hi all
I have a fundamental question regarding loading records into the Fact tables. As you know we always load Dimensions before loading Facts. In our data model, for most of the Fact tables we have a special Dimension that has got the basic attributes in it, along with the source key of the records which are valid in terms of our data warehouse. The source of the Fact table includes the source tables which are involved in loading the Dimension as well.
For example for Student Fact table we have a Student Dimension which is loaded before Student Fact, hence has got the most recent changes (source key of the records which are to be loaded into DW). Now my question is that which options below are more appropriate in loading Student Fact table.
Option 1 - Load Student Fact table using the same source tables that are used in loading records into Student Dimension, ignoring the similar logic has been applied already in Dimension to get valid records from Source and do it again in Fact job.
Option 2 - Inner Join the Student Dimension in the Student Fact ETL job, so it limits the number of source records (coming from Source System) to the validated records which we are interested to load into DW. This option makes loading the Fact table faster, as by contributing the Dimension in loading its corresponding Fact, we don't have to get all records from the source and validate them against the rules again (as it has been done in the Dimension job and now we can use the validated record IDs in Fact job).
As we are new building jobs for a dimensional model, I thought it would be good to ask your opinions and your experience
Thanks in advance,
TootiaI don't see any problem with re-using your "which students do we care about?" logic and rules by borrowing the list of students from the dimension table. You can join to it, or do a lookup() into it and then filter-out nulls (assuming you return a null on a no-match), or use a Validation transform with the "Exists in table" option -- which to use is question of style & performance -- any would work. Indeed, when migrating data into SAP using iDocs, I use a similar idea, always joining the iDoc base segment "map" table to the load of any child segment table to "automatically" filter-out any child segment records not present in the base, re-using the selection logic as you suggest, which then only needs to be built in the base segment. Keeps things tidy.
Best wishes,
Jeff Prenevost
Data Services Practice Manager
itelligence -
Hi Experts,
Need you valuable suggestion.
I am loading a fact table which is having 16 look ups to get the surrogate keys from dimensions.Volume is around 3million.
It is taking lot of time to load the table (around 3-4 hours). Is it because of large number of lookup in a single package?
can you please give some design tips to reduce my load time? Also I am having 6 date fields to lookup with Date dim. Is there any way to get connection once and use it ? I came to know about cache manager for that. Can anyone please help me to understand
that?
Thanks
mukejeehi, I am now doing the same action with you,
loading a fact table which is having 14 look ups to get the surrogate keys from dimensions, while I encounter tough errors when executing fact table, errors are here:
[FactoryLookup [352]] Error: Row yielded no match during lookup.
[FactoryLookup [352]] Error: The "component "FactoryLookup" (352)" failed because error code 0xC020901E occurred, and the error row disposition on "output "Lookup Output" (354)" specifies failure on error. An error occurred on the specified object of the
specified component.
[DTS.Pipeline] Error: The ProcessInput method on component "FactoryLookup" (352) failed with error code 0xC0209029. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and
will cause the Data Flow task to stop running.
[DTS.Pipeline] Error: Thread "WorkThread0" has exited with error code 0xC0209029.
I have no idea where goes wrong, Could you please help me?
Thanks a lot. -
I could not find a clear documentation on how to create a mapping to load CUBE
after creating dimensions. I am using 10.1.0.2 version.
I have two dimensions and one FACT table
DIM1
D1_sk
other attributes
DIM2
D2_SK
other attributes
FACT
D1_sk
D2_sk
measure attributes
In previous forums I came across to use a lookup on dimensions
to load the FACT table.
But what would be my source to perform a lookup on Dimensions ?
because My dimensions are the source for the FACT TABLE.
Can I Join the DIMENSIONS to load the FACT TABLE?
can any one suggest the right approach to creat a FACT table mapping.
Thanks in advance.Hi,
If you can tell what you are tying to achieve we can give some suggestions. You can use the same sources which you have used to load Dimensions, to load Fact table.
Mahesh -
Hi,
Please help me out in loading the fact tables
I had used lookup on DIM table to get my SUK and if I use union transformation to get the out put from each lookup and then loading the data with some condition the data in my fact is not loading in a proper format.
The union transformation is splitting the out put in to different records
Please do inform me about which transformation should be used to get the data from lookup tables.
Or please do inform me the approach to load the fact table in SSIS.
I’m basically INFORMATICA resource and I’m implementing in terms of INFORMATICAHi, glad to see your reply. I am encountering almost the same problem, loading fact table,
My Dataflow is like:
Source Component -->LKP1(get Dim1 SUK) -->LKP2(get Dim2 SUK) -->LKn(getDimn SUK) ...-->Destination Component(load to fact table database), while i have tough difficulties:
[FactoryLookup [352]] Error: Row yielded no match during lookup.
[FactoryLookup [352]] Error: The "component "FactoryLookup" (352)" failed because error code 0xC020901E occurred, and the error row disposition on "output "Lookup Output" (354)" specifies failure on error. An error occurred on the specified object of the specified
component.
[DTS.Pipeline] Error: The ProcessInput method on component "FactoryLookup" (352) failed with error code 0xC0209029. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will
cause the Data Flow task to stop running.
[DTS.Pipeline] Error: Thread "WorkThread0" has exited with error code 0xC0209029.
Could you please help me? How to fix them? -
How to refer to fact table to update the same fact table
Here is my scenario. Fact table is having measures basic_sal, Tax, net_sal with dimension key to employee dimension.
I neet to update the net_sal = basic_sal - tax in fact table.
I tried to do a map with fact_table as source and also target. but after deploying the map, it's not updating the net_sal to the existing rows. It's inserting the new rows with dimension key and net_sal columns. so now fact table is having the double the existing rows.
Thanks,
Srini.Ola Srini,
We have some experience that updating a table while using that same table as source often takes a lot of time... Specially when the table contains a lot of data (which is mostly the case with fact tables).
You can use two solutions. Expand the mapping u use to fill the fact table... The calculations looks not that complex to me... But I could be wrong.
Other solution is to create a temp table where you store all sal types. You could load the fact table from this temp table. Disadvantage of this solution is maintenance of the temp table...
Regards,
Moscowic -
Example of Fact table dataloading
Hi Experts
I'm looking to get an example of data loading in fact table that will help me to understand fact table concept . Really appreciate if someone provide my mentioned stuff. Thanks
Regards
MuzThanks for the link and its really useful and specific but as suggested I need to work with dimension as well so if somebody send me link for data loading dimension and then use these dimension to load data in fact then I really appreciate it.
Hi Muzokh,
You can download very good ETL package samples as well as the DW database tables definition script from the Tools and Utilities of the book - The Microsoft Data Warehouse Toolkit 2nd Edition written by Kimball:
http://www.kimballgroup.com/data-warehouse-business-intelligence-resources/books/microsoft-data-warehouse-dw-toolkit/
The samples of Chapter 7 should be useful for you.
Regards,
Mike Yin
TechNet Community Support -
Load fact table with null dimension keys
Dear All,
We have OWB 10g R2 and ROLAP star schema. In our source system some rows don’t have all attributes populated with values (null value), and this empty attributes are dimension (business) keys in star schema. Is it possible to load fact table with such rows (some dimension keys are null) in the OWB mappings? We use cube operator in mappings.
Thanks And Regards
MiranThe dimension should have a row indicating UNKNOWN, this will have a business key outside of the normal range e.g. -999999.
In the mapping the missing business keys can then be NVL'd to -999999.
Cheers
Si -
Transaction data can be loaded into the Fact table without loading the
Transaction data can be loaded into the Fact table without loading the corresponding master data (Example : Sales analysis transaction data can be loaded without populating any of its dimensions master data)
a. True
b. FalseHi Kutti,
True - You need to select the option in the infopackage - alwyas load even if no master data exists.
Bye
Dinesh -
Hi guys,
We have installed ODI 11 with OBIA and so far the installation has been done with out any problems.But the problem here is none of the fact tables is getting loaded what would be the root cause for this.
Most of the dimension tables got loaded.By default only 1 fact table got loaded,but there are 50 fact tables in that module(HRMS & finance) but when we execute the process is running but the tables ar not loading.
Its an urgent requirement,i had no clue whats happening.Any ideas guys.
TIA,
Kranthi.
Edited by: Kranthi.K on Apr 28, 2010 3:34 AMFirst of all you need to check if all the dimensions got loaded or not?
Because if a crucial dimension like customer or something else, which is being used in all fact loads is not getting loaded then obviously none of your facts will be loaded.
Hope it helps. -
Hello,
I have implemented SCD2 dimension and mapping executing works fine.
Now I have question about loading data in a fact table.
How do I need to use OWB (maybe JOINER operator - Join condition - between dimensions and source table) in case of:
- update on source table
- delete on source table
I think the most simple is insert on source table. It is probably to_char(source_transaction_date,'dd.mm.yyyy') = to_char(sysdate,'dd.mm.yyyy'), if I load once a day..
What is the procedure for fact table mapping to handle updates and deletes on source table?
RegardsSome discussions in previous forums should help you
http://forums.sdn.sap.com/thread.jspa?threadID=2019448
http://forums.sdn.sap.com/thread.jspa?threadID=1908902
In the SAP tutorial, you can see a sample example of making fact tables.
http://help.sap.com/businessobject/product_guides/boexir32SP1/en/xi321_ds_tutorial_en.pdf
Arun -
Using WHERE NOT EXISTS for a Fact Table Load
I'm trying to set up a fact table load using T SQL, and I need to use WHERE NOT EXISTS. All of the fields from the fact table are listed in the WHERE NOT EXISTS clause. What I expect is that if the value of any one of the fields is different, that the whole
record be treated as a new record, and inserted into the table. However, in my testing, when I 'force' a field value, new records are not inserted.
The following is my query:
declare
@Created_By nchar(50)
,@Created_Date datetime --do we need utc check?
,@Updated_By nchar(50)
,@Updated_Date datetime
select @Created_By = system_user
,@Created_Date = getdate()
,@Updated_By = system_user
,@Updated_Date = getdate()
insert fact.Appointment
Slot_ID
, Slot_DateTime
, Slot_StartDateTime
, Slot_EndDateTime
, Slot_Duration_min
, Slot_CreateDateTime
, Slot_CreateDate_DateKey
, Healthcare_System_ID
, Healthcare_Service_ID
, Healthcare_Supervising_Service_ID
, Healthcare_Site_ID
, Booked_Appt_ID
, Appt_Notification_Submission_DateKey
, Appt_Notification_Completion_DateKey
, Appt_Notification_Duration
, Appt_Notification_ID
, Patient_ID
, Physician_ID
, Referral_ID
, Specialty
, LanguageRequested
, Created_Date
, Created_By
, Updated_Date
, Updated_By
select distinct
Slot.Slot_ID
, Slot.Slot_Start_DateTime as Slot_DateTime --???
, Slot.Slot_Start_DateTime
, Slot.Slot_End_DateTime
, datediff(mi,slot.Slot_Start_DateTime,slot.Slot_End_Datetime) as Slot_Duration_Min
, Slot.Created_Date as Slot_CreateDateTime
, SlotCreateDate.Date_key as Slot_CreateDate_DateKey
, HSite.Healthcare_System_ID
, HSite.Healthcare_Service_ID
, HSite.Healthcare_Service_ID as Healthcare_Supervising_Service_ID
, HSite.Healthcare_Site_ID
, Ref.Booked_Appt_ID
, ApptSubmissionTime.Date_key as Appt_Notification_Submission_DateKey
, ApptCompletionTime.Date_key as Appt_Notification_Completion_DateKey
, datediff(mi,appt.SubmissionTime,appt.CompletionTime) as Appt_Notification_Duration
, Appt.Appt_Notification_ID
, pat.Patient_ID
, 0 as Physician_ID
, ref.Referral_ID
, Hsrv.Specialty
, appt.[Language] as LanguageRequested
,@Created_Date as Created_Date
,@Created_By as Created_By
,@Updated_Date as Updated_Date
,@Updated_By as Updated_By
from dim.Healthcare_System HSys
inner join dim.Healthcare_Service HSrv
on HSys.Healthcare_System_ID = HSrv.HealthCare_System_ID
inner join dim.Healthcare_Site HSite
on HSite.HealthCare_Service_ID = HSrv.Healthcare_Service_ID
and HSite.HealthCare_System_ID = HSrv.HealthCare_System_ID
inner join dim.Referral Ref
on Ref.ReferralSite_ID = HSite.Site_ID
and Ref.ReferralService_ID = HSite.Service_ID
and Ref.ReferralSystem_ID = HSite.System_ID
right join (select distinct Slot_ID, Source_Slot_ID, Slot_Start_DateTime, Slot_End_DateTime, Created_Date from dim.slot)slot
on ref.Source_Slot_ID = slot.Source_Slot_ID
inner join dim.Appointment_Notification appt
on appt.System_ID = HSys.System_ID
inner join dim.Patient pat
on pat.Source_Patient_ID = appt.Source_Patient_ID
inner join dim.SystemUser SysUser
on SysUser.Healthcare_System_ID = HSys.Healthcare_System_ID
left join dim.Calendar SlotCreateDate
on SlotCreateDate.Full_DateTime = cast(Slot.Created_Date as smalldatetime)
left join dim.Calendar ApptSubmissionTime
on ApptSubmissionTime.Full_DateTime = cast(appt.SubmissionTime as smalldatetime)
left join dim.Calendar ApptCompletionTime
on ApptCompletionTime.Full_DateTime = cast(appt.CompletionTime as smalldatetime)
where not exists
select
Slot_ID
, Slot_DateTime
, Slot_StartDateTime
, Slot_EndDateTime
, Slot_Duration_min
, Slot_CreateDateTime
, Slot_CreateDate_DateKey
, Healthcare_System_ID
, Healthcare_Service_ID
, Healthcare_Supervising_Service_ID
, Healthcare_Site_ID
, Booked_Appt_ID
, Appt_Notification_Submission_DateKey
, Appt_Notification_Completion_DateKey
, Appt_Notification_Duration
, Appt_Notification_ID
, Patient_ID
, Physician_ID
, Referral_ID
, Specialty
, LanguageRequested
, Created_Date
, Created_By
, Updated_Date
, Updated_By
from fact.Appointment
I don't have any issues with the initial insert, but records are not inserted on subsequent inserts when one of the WHERE NOT EXISTS field values changes.
What am I doing wrong?
Thank you for your help.
cdun2so I set up a WHERE NOT EXIST condition as shown below. I ran the query, then updated Slot_Duration_Min to 5. Some of the Slot_Duration_Min values resolve to 15. What I expect is that when I run the query again, that the records where Slot_Duration_Min resolves
to 15 should be inserted again, but they are not. I am using or with the conditions in the WHERE clause because if any one of the values is different, then a new record needs to be inserted:
declare
@Created_By nchar(50)
,@Created_Date datetime
,@Updated_By nchar(50)
,@Updated_Date datetime
select
@Created_By = system_user
,@Created_Date = getdate()
,@Updated_By = system_user
,@Updated_Date = getdate()
insert fact.Appointment
Slot_ID
, Slot_DateTime
, Slot_StartDateTime
, Slot_EndDateTime
, Slot_Duration_min
, Slot_CreateDateTime
, Slot_CreateDate_DateKey
, Healthcare_System_ID
, Healthcare_Service_ID
, Healthcare_Supervising_Service_ID
, Healthcare_Site_ID
, Booked_Appt_ID
, Appt_Notification_Submission_DateKey
, Appt_Notification_Completion_DateKey
, Appt_Notification_Duration
, Appt_Notification_ID
, Patient_ID
, Physician_ID
, Referral_ID
, Specialty
, LanguageRequested
, Created_Date
, Created_By
, Updated_Date
, Updated_By
select distinct
Slot.Slot_ID
, Slot.Slot_Start_DateTime as Slot_DateTime --???
, Slot.Slot_Start_DateTime
, Slot.Slot_End_DateTime
, datediff(mi,slot.Slot_Start_DateTime,slot.Slot_End_Datetime) as Slot_Duration_Min
, Slot.Created_Date as Slot_CreateDateTime
, SlotCreateDate.Date_key as Slot_CreateDate_DateKey
, HSite.Healthcare_System_ID
, HSite.Healthcare_Service_ID
, HSite.Healthcare_Service_ID as Healthcare_Supervising_Service_ID
, HSite.Healthcare_Site_ID
, Ref.Booked_Appt_ID
, ApptSubmissionTime.Date_key as Appt_Notification_Submission_DateKey
, ApptCompletionTime.Date_key as Appt_Notification_Completion_DateKey
, datediff(mi,appt.SubmissionTime,appt.CompletionTime) as Appt_Notification_Duration
, Appt.Appt_Notification_ID
, pat.Patient_ID
, 0 as Physician_ID
, ref.Referral_ID
, Hsrv.Specialty
, appt.[Language] as LanguageRequested
,@Created_Date as Created_Date
,@Created_By as Created_By
,@Updated_Date as Updated_Date
,@Updated_By as Updated_By
from dim.Healthcare_System HSys
inner join dim.Healthcare_Service HSrv
on HSys.Healthcare_System_ID = HSrv.HealthCare_System_ID
inner join dim.Healthcare_Site HSite
on HSite.HealthCare_Service_ID = HSrv.Healthcare_Service_ID
and HSite.HealthCare_System_ID = HSrv.HealthCare_System_ID
inner join dim.Referral Ref
on Ref.ReferralSite_ID = HSite.Site_ID
and Ref.ReferralService_ID = HSite.Service_ID
and Ref.ReferralSystem_ID = HSite.System_ID
right join (select distinct Slot_ID, Source_Slot_ID, Slot_Start_DateTime, Slot_End_DateTime, Created_Date from dim.slot)slot
on ref.Source_Slot_ID = slot.Source_Slot_ID
inner join dim.Appointment_Notification appt
on appt.System_ID = HSys.System_ID
inner join dim.Patient pat
on pat.Source_Patient_ID = appt.Source_Patient_ID
inner join dim.SystemUser SysUser
on SysUser.Healthcare_System_ID = HSys.Healthcare_System_ID
left join dim.Calendar SlotCreateDate
on SlotCreateDate.Full_DateTime = cast(Slot.Created_Date as smalldatetime)
left join dim.Calendar ApptSubmissionTime
on ApptSubmissionTime.Full_DateTime = cast(appt.SubmissionTime as smalldatetime)
left join dim.Calendar ApptCompletionTime
on ApptCompletionTime.Full_DateTime = cast(appt.CompletionTime as smalldatetime)
where not exists
select
Slot_ID
, Slot_DateTime
, Slot_StartDateTime
, Slot_EndDateTime
, Slot_Duration_min
, Slot_CreateDateTime
, Slot_CreateDate_DateKey
, Healthcare_System_ID
, Healthcare_Service_ID
, Healthcare_Supervising_Service_ID
, Healthcare_Site_ID
, Booked_Appt_ID
, Appt_Notification_Submission_DateKey
, Appt_Notification_Completion_DateKey
, Appt_Notification_Duration
, Appt_Notification_ID
, Patient_ID
, Physician_ID
, Referral_ID
, Specialty
, LanguageRequested
, Created_Date
, Created_By
, Updated_Date
, Updated_By
from fact.Appointment fact
where
Slot.Slot_ID = fact.Slot_ID
or
Slot.Slot_Start_DateTime = fact.Slot_DateTime
or
Slot.Slot_Start_DateTime = fact.Slot_StartDateTime
or
Slot.Slot_End_DateTime = fact.Slot_EndDateTime
or
datediff(mi,slot.Slot_Start_DateTime,slot.Slot_End_Datetime) =
fact.Slot_Duration_min
or
Slot.Created_Date = fact.Slot_CreateDateTime
or
SlotCreateDate.Date_key = fact.Slot_CreateDate_DateKey
or
HSite.Healthcare_System_ID = fact.Healthcare_System_ID
or
HSite.Healthcare_Service_ID = fact.Healthcare_Service_ID
or
HSite.Healthcare_Service_ID =
fact.Healthcare_Service_ID
or
HSite.Healthcare_Site_ID = fact.Healthcare_Site_ID
or
Ref.Booked_Appt_ID = fact.Booked_Appt_ID
or
ApptSubmissionTime.Date_key =
fact.Appt_Notification_Submission_DateKey
or
ApptCompletionTime.Date_key =
fact.Appt_Notification_Completion_DateKey
or
datediff(mi,appt.SubmissionTime,appt.CompletionTime) = fact.Appt_Notification_Duration
or
Appt.Appt_Notification_ID = fact.Appt_Notification_ID
or
pat.Patient_ID =
fact.Patient_ID
or
0 = 0
or
ref.Referral_ID = fact.Referral_ID
or
Hsrv.Specialty = fact.Specialty
or
appt.[Language] = fact.LanguageRequested
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