WHY AND WHERE TO USE RANK AND DENSE RANK IN SQL | SQL TUTORIALS | LEARN SQL

We will solve real case study to use rank and dense rank function in SQL

Table Creation
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’)

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