HackerRank-Solutions

My solutions to HackerRank challenges.

SQL

Skill	Challenge	Solution	Subdomain	Difficulty
Basic	Revisiting the Select Query 1	Oracle	Basic Select	Easy
Basic	Revisiting the Select Query 2	Oracle	Basic Select	Easy
Basic	Select All	Oracle	Basic Select	Easy
Basic	Select By ID	Oracle	Basic Select	Easy
Basic	Japanese Cities' Attributes	Oracle	Basic Select	Easy
Basic	Japanese Cities' Names	Oracle	Basic Select	Easy
Basic	Weather Observation Station 1	MySQL	Basic Select	Easy
Basic	Weather Observation Station 3	MySQL	Basic Select	Easy
Basic	Weather Observation Station 4	Oracle	Basic Select	Easy
Basic	Weather Observation Station 6	Oracle	Basic Select	Easy
Basic	Weather Observation Station 7	Oracle	Basic Select	Easy
Basic	Weather Observation Station 8	Oracle	Basic Select	Easy
Basic	Weather Observation Station 9	Oracle	Basic Select	Easy
Basic	Weather Observation Station 10	Oracle	Basic Select	Easy
Basic	Weather Observation Station 11	Oracle	Basic Select	Easy
Basic	Weather Observation Station 12	Oracle	Basic Select	Easy
Basic	Higher Than 75 Marks	Oracle	Basic Select	Easy
Basic	Employee Names	Oracle	Basic Select	Easy
Basic	Employee Salaries	Oracle	Basic Select	Easy
Basic	Type of Triangle	Oracle	Advanced Select	Easy
Basic	The PADS	Oracle	Advanced Select	Medium
Basic	Revising Aggregations - The Count Function	Oracle	Aggregation	Easy
Basic	Revising Aggregations - The Sum Function	Oracle	Aggregation	Easy
Basic	Revising Aggregations - Averages	Oracle	Aggregation	Easy
Basic	Average Population	Oracle	Aggregation	Easy
Basic	Japan Population	Oracle	Aggregation	Easy
Basic	Population Density Difference	Oracle	Aggregation	Easy
Basic	The Blunder	Oracle	Aggregation	Easy
Basic	Top Earners	Oracle	Aggregation	Easy
Basic	Weather Observation Station 2	Oracle	Aggregation	Easy
Basic	Weather Observation Station 13	Oracle	Aggregation	Easy
Basic	Weather Observation Station 14	Oracle	Aggregation	Easy
Basic	Weather Observation Station 15	Oracle	Aggregation	Easy
Basic	Weather Observation Station 16	Oracle	Aggregation	Easy
Basic	Weather Observation Station 17	Oracle	Aggregation	Easy
Basic	Weather Observation Station 18	Oracle	Aggregation	Medium
Basic	Weather Observation Station 19	Oracle	Aggregation	Medium
Basic	Population Census	Oracle	Basic Join	Easy
Basic	African Cities	Oracle	Basic Join	Easy
Basic	Average Population of Each Continent	Oracle	Basic Join	Easy
Intermediate	Weather Observation Station 5	Oracle	Basic Select	Easy
Intermediate	Binary Tree Nodes	Oracle	Advanced Select	Medium
Intermediate	New Companies	Oracle	Advanced Select	Medium
Intermediate	Weather Observation Station 20	Oracle	Aggregation	Medium
Intermediate	The Report	Oracle	Basic Join	Medium
Intermediate	Top Competitors	Oracle	Basic Join	Medium
Intermediate	Ollivander's Inventory	Oracle	Basic Join	Medium
Intermediate	Challenges	Oracle	Basic Join	Medium
Intermediate	Contest Leaderboard	Oracle	Basic Join	Medium
Intermediate	SQL Project Planning	Oracle	Advanced Join	Medium
Intermediate	Placements	Oracle	Advanced Join	Medium
Intermediate	Symmetric Pairs	Oracle	Advanced Join	Medium
Intermediate	Interviews	Oracle	Advanced Join	Hard
Others	Occupations	Oracle	Advanced Select	Medium