A Genuine Use Case of DENSE RANK over RANK | RANK vs Dense RANK | Data Analytics

In this video we will cover a real use case where we need to use dense rank over rank.

Zero to hero(Advance) SQL Aggregation:

Most Asked Join Based Interview Question:

Solving 4 Trick SQL problems:

Data Analyst Spotify Case Study:

Top 10 SQL interview Questions:

Interview Question based on FULL OUTER JOIN:

Playlist to master SQL :

Rank, Dense_Rank and Row_Number:
script:
create table product_inventory_fact
(
product_id varchar(10),
quantity integer,
snapshot_date date
)
insert into product_inventory_fact
values ('ITEM1',10,'2022-08-01'),('ITEM2',14,'2022-08-01')
,('ITEM1',10,'2022-08-02'),('ITEM2',12,'2022-08-02')
,('ITEM1',5,'2022-08-03'),('ITEM2',6,'2022-08-03'),('ITEM3',6,'2022-08-03')
,('ITEM1',10,'2022-08-04'),('ITEM2',9,'2022-08-04'),('ITEM3',3,'2022-08-04'),('ITEM4',8,'2022-08-04')

#sql #dataengineer

[ankitbansal]

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use code ANKIT10 for discount.

[pragnyanakka]

Hello Ankit,

Can you check this query:
select *
from (
select *,
rank() OVER(PARTITION BY product_id ORDER BY snapshot_date desc) as drn
from product_inventory_fact
)A
where drn <= 2
ORDER BY drn, product_id;

[ajaydalvi]

Hi Ankit Sir!.
Please make a end to end project for data analyst!
Thankyou!

[sugan]

can you explain in channel regarding employee can start date and close date perform the average time ? and about average rating it will be useful

[avi]

This does make sense,

Thanks a lot sir🙏

[inspiredomkar]

Hello Ankit Sir. Aren't there SQL important questions like there are cracker sheets for SWE roles?

[BI-Rahul]

For the same question, Can we go ahead with rownum() instead of dense_rank() ?

[Progressivethoughts]

hi Ankit i have a sql query problem please let me know how i can share it with you

[vijaysingh-hwsj]

Hi Ankit, I want join your Sql course, can you please share link...