HANA Rank vs DenseRank | What's the difference between RANK() and DENSE_RANK()

SAP HANA XSA and HANA Native Development usage SQL Script language as one of the main programming language to push logic deep into HANA DB and get maximum performance out of system. As part of SQL Script chapter, we learn 2 of the most used Window functions in HANA called Rank and Dense Rank, as described in the video.

RANK: This gives you the ranking within your ordered partition. Ties are assigned the same rank, with the next ranking(s) skipped. Therefore, if you have 3 items at rank 2, the next rank listed will be ranked 5.

DENSE_RANK: This gives you the ranking within your ordered partition, but the ranks are consecutive in it. Also, no ranks are skipped if there are ranks with multiple items.

For a given problem we can find different solutions and alternative methods. i.e. Problem is one but we have different approaches to resolve the problem. If we have similar kind of a solutions in our hand for a given problem, we need to choose the best and accurate choice.

In this Video, I’m going to explain how to choose the correct RANK function based on Business need..

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You can download the ppt of this session from below

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[ashlehsashekhawat]

The trainer is very good and the quality of video and content is very good