Want to create a knowledge module urgently

Question

Hi all,
I am very new in ODI, i want to create an IKM for loading data into a target table. The logic i want to implement is that.
I have a target table say Event, it has three columns
Create table Event
Event_ID Number(10,0)
,Event_Num Varchar(255)
,Source Varchar(255)
Now i have a source table say Sales
Create table event
Sales_ID Varchar(255)
,Flag byteint
I want to load target table Event in a way that
Event
Event_ID is a Surrogate_Key preferably a sequence in the interface named say Seq_Event that is unique for every event_num
,Event_Num is Sales_id from source table say Event
,Source hard coded value say 'Hello'
The only complexity is that event_id should b generated once for each sales_id i.e it should be a one to one mapping.
My source and target technology is teradata, if u ppl r not familiar with teradata then u can help me in making a IKM for oracle i will convert it into teradata.
Your urgent help will be higly appreciated.
Thanks in advance

Answer 1

Here is the simple way to solve it.
Step 1. Create a variable EVENT_ID_SEQ and write syntax like this SELECT NVL(MAX(EVENT_ID),0) FROM TARGET_TABLE .
Step 2. Call the variable in the interface #EVENT_ID_SEQ+ROWNUM
step 3. Call the variable in refresh mode and interface in the package and run that.
This way every time you find the max (value) and using rownum gives the incrementing factor namely sequence number , Also make sure you map it to target and use Insert only and uncheck update for EVENT_ID column.
hope this solves your issue