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![Transform Transform](/uploads/1/2/5/8/125872874/593106344.jpg)
- Key Generation Transform In Sap Data Services Without Mdg
- Key Generation Transform In Sap Data Services Designer
To delta load a table which has a surrogate key as primary key you simply combine Table Comparison with Key Generation Transform. Behind the scenes, some not so obvious things go on.
The flow itself is simple.
The secret is the Table Comparison Transform, that perform the lookup on the target table to get the current status. With this lookup, it can read and will output all the columns, even if they are not part of the input schema. An example is the surrogate key of the target table. The Table Comparison does get the logical primary key as input, tries to find the matching row in the comparison (target) table and if found, will get all the missing column values as well like the corresponding KEY_ID.
Mar 26, 2014 Exploring:- Key Generation transform in SAP BODS designer. SAP Data Services. Vast is an Ocean,So is vast the World of Knowledge. With my diving suit packed, loaded with imaginative visions, and lots of curiosity, started diving deep into the world of BODS.Lots of work is going on. I explored this little process of the KeyGeneration. May 17, 2018 This tutorial shows you how to use the date generation function in SAP BO Data Services For more information please visit www.drivenbyanalytics.com. Query Transform in Data Services - Duration. Feb 29, 2012 Although the Key Generation Transform actually does execute a SQL I put it into the Streamline category because it executes one and only one SQL at the start of the transform and this is a 'select max(key) from table'. In almost all cases this key will be the primary key column which is indexed. Using database functions There is no great variety of functions in this area. Data Services encourages you to communicate with database objects and control the flow of data within a - Selection from SAP Data Services 4.x Cookbook Book.
![Transform Transform](/uploads/1/2/5/8/125872874/593106344.jpg)
The only thing to watchout is, if using the row-by-row setting of the Transform, the compare table has to have an index on the logical(!!) primary key - CUSTOMER_ID in this example.
Now the Key Generation Transform gets insert and update rows but will overwrite the KEY_ID column only for rows with OP code of insert - rows that do not have a KEY_ID yet.
And at then end, the target table loader does execute the insert or the update statement. For the update statement, it needs to know what the physical primary key is, so make sure the target table got imported with primary key column(s) into the DI repo.
Description:
Date_Generation transform is used for creating time dimension tables. This transform generates a column which holds the date values based on the start & end dates provided as an input to the transform by considering the increment provided to it.
Here is the step by step guide to achieve the transformation.
Create a Project
Create a Batch Job
Take Work Flow and Data Flow
Take Date Generation Transformation
Double Click on Date_Generation Transform and Provide the details as below
Take the Query Transformation and join to the Date Generation Transformation
Go to Query Transform and Create New Output Column
Provide the Name for the Output Column to return the week in year
Go to Functions and select Date Functions then week_in_year function and click on Next
Select the Date_Generation Transform generated column then click on Finish
After mapping the week_in_year and create another New Output Column to Quarter of the Year
Give the name and data type for another output column then click on OK
Go to Functions and select Date Functions and the select quarter and click on Next
Key Generation Transform In Sap Data Services Without Mdg
Select the Date_Generation transform generated column and click on OK
Click on Finish
Again create another output column return last date
Name the column and data type for the newly created output column
Go to Date functions and select last_date function then click on Next Supermicro oob license key generator.
Click on Finish
After mapping the all new ouput columns ,Validate the current window
Take the Template Table and join to the Query Transformation
Key Generation Transform In Sap Data Services Designer
Execute the Job
After executing the job check the data in the Target
Thanks for following.