My e-Notes about DataScience, Machine Learning, Python, Data Analytics, DataStage, DWH and ETL Concepts

Breaking

Wednesday, 28 October 2015

Left and Right String Function - DataStage Transformation



Today, we will discuss two more datastage transformer functions - Left & Right.  These two functions use to get or cut the string from the input data, Let's have a look -


Left(input, number)  
input : - input column
number :- the no of characters you want to fetch from Left most of string


input = 'This is a test of fuctions."

Left(input,9)  =    'This is a'
Left(input, 3) =    'Thi'

Right(input, number)
input : - input column
number :- the no of characters you want to fetch from Right most of string


input = 'This is a test of fuctions."

Right(input,9)  =    'fuctions.'
Right(input, 14) =    't of fuctions.'


Use of Left/Right function to get SubString -

These functions used to get substring from an input if the start and end character location known or can be derived. Let's see an example -

we need to cut input from 2nd to 6th character

input = 'This is a test of fuctions."

left(input, 6) = 'This i'           #left function cut the left 6 character
Right(left(input,5),5) = 'his i'    #Use right func, to cut right 6-2+1 = 5 char 






Like the below page to get update  
https://www.facebook.com/datastage4you
https://twitter.com/datagenx
https://plus.google.com/+AtulSingh0/posts
https://groups.google.com/forum/#!forum/datagenx

No comments:

Post a comment

Disclaimer

The postings on this site are my own and don't necessarily represent IBM's or other companies positions, strategies or opinions. All content provided on this blog is for informational purposes and knowledge sharing only.
The owner of this blog makes no representations as to the accuracy or completeness of any information on this site or found by following any link on this site. The owner will not be liable for any errors or omissions in this information nor for the availability of this information. The owner will not be liable for any losses, injuries, or damages from the display or use of his information.