I am attempting to perform an incremental load, inserting new rows and updating existing rows. I am using a lookup and everything works fine, except when it is the first load of the destination table. As there are no records in the table at all, the lookup fails. I thought of using a rowcount - if the count variable is zero load everything from temporary table to load table, otherwise perform lookup and incremental load.
Can anyone help?
Hi,
Is there any way to maintain history of data while incremental load without using the Slowly changing dimension(SCD) concept?
Hi All
I've created an SSIS package that loads data from source to destination, using Lookup and conditional Split to check New rows and changed rows for one table.
Now I want to take this father by loading data for multible table more that 100. I did it in T-SQL using dynamic sql and cursor.
How can I achive this using SSIS.
We are in the process of converting our existing incremental loads from DTS to SSIS.
Currently we get all the data for the past month into temp tables in the warehouse, compare with key fields add the new rows and update changed rows. All this is done using Execute SQL task.
Is there a better way to implement the incremental logic using SSIS any new objects that be used to avoid too much SQL codes? Performance is very important and we do a lot of aggregation after the load for the reports to run faster so that we can meet customer SLA's.
We have around 20 tables that needs to be loaded 4 have large amount of data between 20 and 40 million rows out of which we will be brining over around 100 thousand during each incremental run. The other tables have less than 100,000 rows so does not hurt truncating and reloading the entire table.
Any assistance is appreciated.
Thanks!
Hi everyone. I'm trying to figure out how to run an incremental load into a Staging table.
At this point I'm not trying to Conditional Split it between "New" and "Changed" records... just the load.
The logic in my head says that after each load, you can take the most recent "modified" date/time and store that in an incremental load table. That way, next time you run an incremental load, you just have to look up that "modified" date/time, and only load the source records with a "modified" date/time later than the record in your incremental load table. Does that plan sound feasible?
I think so far my problem is that my source is on an ADO.NET connection, and my incremental load table is on my SQL Server. So when I do my load from the ADO.NET database, I cannot read the data from the incremental load table.
Is my logic flawed?
Any help would be appreciated.
Thank you very much!
I required query for Incremental Load of CDC using Query
View 1 Replies View RelatedHi all,
i have a fact table which loads through package,when
i m trying to load this table by running the package,i m truncating the
fact table and loading the fresh data,instaed of this without
truncating the fact table i have to implement the incremental logic in
this.
For this i can use SCD or Conditional split,but problem
here is i have many source tables to load this fact table,so its
very difficult to trace the changes in different source tables.
can any one help me out in this??????
We need to implement incremental load in database. A sample scenario is, there is a view (INCOMEVW) which is build on top of a query like
CREATE VIEW INCOMEVW
AS
SELECT CLIENTID,COUNTRYNAME,SUM(OUTPUT.INCOME) AS INCOME
(SELECT EOCLIENT_ID AS CLIENTID,EOCOUNTRYNAME AS COUNTRYNAME,EOINCOME AS INCOME FROM EOCLIENT C INNER JOIN EOCOUNTRY CT ON
C.COUNTRYCODE=CT.COUNTRYCODE
[code]...
This is a sample view. As of now there is a full load happening from the source(select * from INCOMEVW) and loads to target table tbl_Income.We need to pick only the delta and load to the target table using a staging. The challenge is,
1) If we get the delta(Insert,update or deleted rows in the source tables EOCLIENT,EOCOUNTRY,ENCLIENT,ENCOUNTRY, how to load the incremental to
single target table tbl_Income.
2) How to do the Sum operation with group by in incremental load?
3) We are planning to have a daily incremental load and thinking to create the same table structure as source with Date and Flag column to identify
the date and whether that source row is an Insert or Update or Delete with the flag. But not sure how to frame something like this view and load to single target with Sum operations.
I have a table in Server A and it has 5 columns. One is Address & ID, CreateDatetime,..
I need to transfer data from this table from Server A to server B for a report pupose. The Address column in this table has some places two address in the table. I am giving ex below
Address
Houston, Dallas
Redmond
Sacramento
New Jersey, New York
I want to avoid the rows where address are two Houston, Dallas & New Jersey, NewYork to the destination table in server B and need to do incremental loads.
how to proceed with this?
The version we are using is Sql Server standard edition 2008r2
We have build a powerpivotmodel that uses a couple of datasources. The user extracts on monthly base an excel file with 20 samples (randomly) from the model to check some aspects of the input. He can put Yes or No into a column if he agrees or not and fill in a remark field. Next this excel file is loaded back into the powerpivot model (in a nightly batch) and the Yes/No field and the remark field are added to the original data. If the user refreshes his excel sample file from the pivot, the remark and YN field will be filled with the values he added. So far so good. One moth later when he extracts the file for a new month a problem arises. Since the excel file only has data for the new month, when the PP-model is reloaded the data for the previous month will be lost. So we need some sort of incremental load for the excel file. Is that possible and is this the best way to handle this situation?
View 4 Replies View Relatedi want to create one ssis packages using the index bite or hash bite.
View 4 Replies View RelatedWe are designing a Staging layer to handle incremental load. I want to start with a simple scenario to design the staging.
In the source database There are two tables ex, tbl_Department, tbl_Employee. Both this table is loading a single table at destination database ex, tbl_EmployeRecord.
The query which is loading tbl_EmployeRecord is, SELECT EMPID,EMPNAME,DEPTNAME FROM tbl_Department D INNER JOIN tbl_Employee E ON D.DEPARTMENTID=E.DEPARTMENTID.
Now, we need to identify incremental load in tbl_Department, tbl_Employee and store it in staging and load only the incremental load to the destination.
The columns of the tables are,
tbl_Department : DEPARTMENTID,DEPTNAME
tbl_Employee : EMPID,EMPNAME,DEPARTMENTID
tbl_EmployeRecord : EMPID,EMPNAME,DEPTNAME
How to design the staging for this to handle Insert, Update and Delete.
I have a transaction table having about 40 crore rows in source. It don't have timestamp and unique key columns. It have only Bill_month and Bill_Year columns. Actually for loading this table into staging I have added a new datetime column by adding default bill_date as 01. Then
* First we delete last 3 month data from staging tables.
* Get last 3 months data from source table.
* Load that 3 months data from source to staging table.
We do this because we only get update for last three months data. Now I have to include this transaction table as Fact table in DW. What will be the best practice for loading the fact table by picking data form staging table. Also we have to look up with dimensions for Foreign Keys.
* Should I implement the same method of deleting last 3 months records and loading them again.
Hello,
I have developed some packages to load data into "Fact" tables in the data warehouse.
Some packages are OK, other ones not. What is the problem?: some packages load fact tables with lots of "Lookup - Data Flow Transformation" into the "data flow task" (lookup against dimension tables) but they are very very slow, too much slow to be choosen as a solution.
Do you have any other solutions to avoid using "Lookup - Data Flow Transformation"? Any other solution (SSIS, TSQL and so on....) is welcome to speed up the Fact table loading process.
Thank in advance
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?
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?
Say I want to lookup a value in another dataset, but there is a grouping that requires you to know what the values for each level is in order to get to the correct detail record. Can you still use the lookup function with more than one field to compare against? So for example
Department
\___SalesPerson
\___Measure
I want to be able to add a new row at the Measure level, but lookup each field from another dataset. In order to do that I will need the Department AND SalesPerson values to do the lookup, but I dont think the Lookup function will let us do that will.
Hi All,
Actually this is in regard to SCD Type 2 Dimension, Scenario is like that I am moving Fact table from some old source and I have dimensionA description value in fact which I want to replace with appropriate id from Dimension Table and that Dimension table is SCD Type 2 based on StartDate and EndDate and Fact Table doesn't contains direct date value rather there is timeId in Fact so to update the value in Fact table I have to Join Time Dimension table and other Dimension Table to replace fact Description with proper Id.
Lets assume DimensionA Structure
id
Description
StartDate
EndDate
Fact Table
id
measure1
measure2
TimeId
Description
Time Dimension
TimeId
Date
Day
Hour ...
I am doing a lookup that requires mapping 2 columns in the column mapping section. When I do this, I get the error "Row yielded no match during lookup" . The SQL that I captured in SQL profiler does find the record when I run it in Management Studio. I have already tried trimming everything to no avail.
Why is this happening?
I tried enabling memory restrictions but then I my package hangs and I get a SQLDUMPER_ERRORLOG.log file with the following logged:
07/24/07 13:35:48, ERROR , SQLDUMPER_UNKNOWN_APP.EXE, AdjustTokenPrivileges () failed (00000514)
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Input parameters: 4 supplied
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ProcessID = 5952
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ThreadId = 0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Flags = 0x0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, MiniDumpFlags = 0x0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, SqlInfoPtr = 0x0100C5D0
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, DumpDir = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ExceptionRecordPtr = 0x00000000
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ContextPtr = 0x00000000
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ExtraFile = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, InstanceName = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, ServiceName = <NULL>
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 11 not used
07/24/07 13:35:48, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 15 not used
07/24/07 13:35:49, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, Callback type 7 not used
07/24/07 13:35:49, ACTION, SQLDUMPER_UNKNOWN_APP.EXE, MiniDump completed: C:Program FilesMicrosoft SQL Server90SharedErrorDumpsSQLDmpr0033.mdmp
07/24/07 13:35:49, ACTION, DtsDebugHost.exe, Watson Invoke: No
Why am I getting this error with "Enable Memory Restriction"?
Hi,
Here I will describe my problem.
1. We are loading large amount of data from database on background thread which is starting on Application_start event in global.aspx.cs file.The data is later cached for subsquent request to improve the performance.
2. Now when we put the application on web farm garden, it is not able to load the application.
3. We are sending the request the servers through Router kind of application.
4 This application is working fine on single server enviornment.
Please help us.
Ajay Kumar Dwivedi
Hi all,
I don't understand what's happening here.
I have a Conditional Split with 3 outputs. On the first output I have a lookup, when I execute the package I have 56 rows going through the Conditional Split, all rows are then going to the 2nd and 3rd output but the lookup on the first output generates an error "Row yielded no match during lookup".
I don't understand why the lookup is generating an error while there is no row going through it.
Any idea ?
Sébastien.
I just have done the SSIS example in the tutorial document included when install SQL 2005 ENT. I have a problem that whenever I test to run, the service load all data from source with out noticing about the data (I mean it load all the data to the destination), I do it several time and it continue to load all without checking. That mean the data is dublicated when the schedule run???
I think there should be a paramete or something like that to help the engine just load the new data to the destination. Could you help please?
Thank
I am designing a ssis package,This is intends to mine text data(Data extracted from websites).
Term lookup/Term extraction has been used as tools for mining.
I have lookup terms defined with me for reference table,but the main problem lie in extracting the nearby text/number/charcters to these lookup terms during mining.
For example :
I found noun "Email" 200 (frequency score) times in my text,Now I want to extract nearby email address(this is also true for PhoneNumber,Address attributes also).so how can I achieve this with SSIS.
If u have some idea/suggestion to carry out this challenge with or without Term Extraction/Term Lookup,plz do write here.
Hi guys,
I am trying to get a result like below without using the cursor.
col1 col2 col3 col4
1111 date uniquenumber 6
1111 date uniquenumber 5
1111 date uniquenumber 4
1111 date uniquenumber 3
1111 date uniquenumber 2
1111 date uniquenumber 1
2222 date uniquenumber 4
2222 date uniquenumber 3
2222 date uniquenumber 2
2222 date uniquenumber 1
3333 date uniquenumber 2
3333 date uniquenumber 1
the column that say unique number is unique and is not duplicated and date column might have duplicates
Please advise whether it is possible to write a query without cursor.
Thanks,
Anu
Hi!
I have a request of having a select statement displaying a list of values in descending order and another column that tells what record it is.
something like this:
id | value | no
4 345 1
7 234 2
2 143 3
9 32 4
3 4 5
...
is this possible?
can it be something like this:
select id, value, increment(1,1) as no from tblTable
order by value desc
thanks.
I am looking to create a incremental value based on the resulting insert that I am using. There already is another field being used as an identity field. I have a beginning value that I just want to add the row number to for the insert.
insert into lineitem select substring(group_id,4,len(ltrim(rtrim(group_id)))-3) as co_code,
0,0,(case when enddate < cast(month(getdate()) as varchar(10))+cast(day(getdate()) as varchar(10))
then 'Prior' else 'Current' end ),
left(acct_type,2) as bene_type, convert(smalldatetime,left(ltrim(rtrim(eff_date)), 8)),
0,trans_amt,0,0,convert(smalldatetime,left(ltrim(r trim(sett_date)),8)),
ltrim(rtrim(b.fname)) + ' ' + ltrim(rtrim(b.lname)) as payee,0,0,a.ssn,'Y',999+count(*),
(case when isnull(b.location,'') = '' then '' else b.location end) as location
from mbi_tran_temp a
left join enrollees b on a.ssn = b.ssn and
ltrim(rtrim(a.group_id)) = ltrim(rtrim(b.mbicode))
The '999+count(*)' is where I would like to have the incremental value.
My Question is of understanding Incremental Backup. How does this work,
Does it go by new files added or activate on file size.
Hi Friends please let me know how can we incrementally load a destination table with source table. bearing in mind that we need to track that there are no duplicates in the destination table. I need to load only changed or new data in the final load. Please give me some examples also. I am tryin this from last 2 days as I am totally new to SSIS.
View 11 Replies View Relatedhi guys,
I'm a newbie in sql.
anybody know how,
if I want to update incrementally using integration service.
say I have 2 server. we want to took the data from server A and put the data to server B.
but we want just the changes in server A that send to server B.
regards,
-dedys
I have done an bulk upload and I would like to start doing incremental uploads. I just want to upload only the new records that have been added to my data source ( free foxpro tables ). Can anybody point me to an example or info to accomplish this.
Thanks,
Sergio
Dear all,I have an SQL table where I am doing insert from an asp.net web project.I have a primary Key, set to be incremented by 1on each insert.I have another column, Col1 that should be incremented on each insert, How can I do this?I need to have 2 incremental columns? do u have any idea on how to do this?I am doing this right now by calling a select statement in the Add stored procedure on this table, I read the last value of col1 and then I increment it by 1, this work fine on development environement, but when many users are accessing this website, I will have wrong values for col1. Any idea??Thanks.
View 6 Replies View RelatedHi Everybody,
Right now i have a DTS package thats populating a fact table,I'm trying to do an incrmental update of the fact table (which has a sequential#id).
any ideas ,please
Thanks,
Paris
hi,
i need to create two instances of db and transfer incremental uploads from one db to another without having to transfer the entire table of data again and again. how should i go about it? what commands should i use?
thanks in advance
ramya.