HackerRank: Harry potter and wands, Ollivander's Inventory - SQL Server.

Users will learn how to write a complex SQL query using Common Table Expressions (CTEs) to solve a problem involving filtering and sorting data from multiple tables. They'll understand how to use JOIN operations, aggregate functions, and ORDER BY clauses to extract specific information based on given criteria.

Master the use of Common Table Expressions in SQL queries
Understand how to join multiple tables efficiently
Gain insights into using aggregate functions like MIN in SQL
Understand how to handle multi-level sorting in SQL

Ollivander's Inventory

SEO keywords for finding this video:
SQL, CTE, HackerRank, Harry Potter, Ollivander's wands, JOIN operations, MIN function, sorting data, filtering data, SQL problem-solving

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