What is Rank Function in Structured Query Language (SQL)?
What is Rank Function in SQL?
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Chapters:
00:00 Introduction
00:05 What is the RANK Function in SQL?
00:10 Purpose and Basics of the RANK Function in SQL
00:16 How RANK Function Assigns Ranks in SQL
00:24 Example Scenario: Ranking Based on Sales Units in SQL
00:31 Setting Up the RANK Function in SQL
00:37 Using PARTITION BY for Grouping in SQL
00:46 Using ORDER BY for Sorting in SQL
00:52 Practical Example with Data Table
00:57 Ranking within Specific Regions
01:03 Troubleshooting: Incorrect Outputs
01:10 Handling Data Types and Errors in SQL
01:18 Sorting Order: Ascending vs. Descending in SQL
01:26 Handling Duplicate Values in Ranking in SQL
01:32 Detailed Example with Duplicate Values
01:38 Conclusion and Summary
In this video from Educate Cube, the RANK function is explained as a window function used to assign ranks to rows within a result set based on values in one or more columns. It is especially useful for ranking data within groups.
Key points covered:
RANK Function: Assigns ranks based on specified order and grouping.
Syntax: `RANK() OVER (PARTITION BY column ORDER BY column [ASC|DESC])`.
Application: Demonstrates ranking sales units within different regions, sorting and handling ties.
Handling Ties: Duplicate values receive the same rank, and the next rank is skipped.
The video includes practical examples and explains how to correctly use the RANK function for accurate results.
Watch video What is Rank Function in Structured Query Language (SQL)? online without registration, duration hours minute second in high quality. This video was added by user Educate Cube 19 August 2024, don't forget to share it with your friends and acquaintances, it has been viewed on our site 15 once and liked it 1 people.