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Dense rank is a ranking function in SQL that assigns a unique rank to each distinct row in a result set.
Dense rank is used to assign ranks to rows in a result set without any gaps between the ranks.
It is similar to rank function but does not skip ranks if there are ties.
For example, if there are two rows with the same value, they will both receive the same rank in dense rank.
Facebook dw scenario
I appeared for an interview in Sep 2017.
I applied via Referral and was interviewed in Apr 2020. There were 5 interview rounds.
Normalization is a process of organizing data in a database to reduce redundancy and improve data integrity.
Normalization involves breaking down a table into smaller tables and establishing relationships between them.
There are different levels of normalization, with each level having specific rules to follow.
Normalization helps to prevent data inconsistencies and anomalies.
Examples of normalization include converting r...
I applied via Campus Placement and was interviewed in May 2021. There was 1 interview round.
I applied via Naukri.com and was interviewed before Sep 2020. There were 4 interview rounds.
I applied via Naukri.com and was interviewed in Apr 2021. There were 3 interview rounds.
I applied via Recruitment Consultant and was interviewed in Oct 2020. There were 6 interview rounds.
I applied via Naukri.com and was interviewed before Oct 2020. There were 5 interview rounds.
I applied via Naukri.com and was interviewed in Jan 2021. There were 3 interview rounds.
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