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HackerRank: Weather Observation Station 2 Solution in SQL

OJ Solutions | April 12, 2025, 5:02 p.m.

Introduction The Weather Observation Station 2 problem on HackerRank focuses on aggregating data from the STATION table. In this problem, you are asked to calculate the sum of the LAT_N

HackerRank: Earnings of Employees Solution in SQL

OJ Solutions | April 12, 2025, 5:01 p.m.

Introduction The Earnings of Employees problem on HackerRank involves using SQL to calculate the maximum total earnings of employees, based on their salary and the number of months worked. Additionally,

HackerRank: The Blunder Solution in SQL

OJ Solutions | April 12, 2025, 4:59 p.m.

Introduction The The Blunder problem on HackerRank challenges you to work with the AVG() and REPLACE() functions in SQL to compute a specific difference involving salary data. The task asks

HackerRank: Population Density Difference Solution in SQL

OJ Solutions | April 12, 2025, 4:58 p.m.

Introduction The Population Density Difference problem on HackerRank challenges you to calculate the difference between the highest and lowest population values in a dataset. In this case, you are working

HackerRank: Japan Population Solution in SQL

OJ Solutions | April 12, 2025, 4:57 p.m.

Introduction The Japan Population problem on HackerRank is a straightforward exercise that helps you practice using the SUM() function in SQL. The task is to calculate the total population of

HackerRank: Average Population Solution in SQL

OJ Solutions | April 12, 2025, 4:56 p.m.

Introduction The Average Population problem on HackerRank teaches how to use the AVG() and FLOOR() functions in SQL. In this challenge, you are tasked with calculating the average population of

HackerRank: Revising Aggregations - The AVG Function Solution in SQL

OJ Solutions | April 12, 2025, 4:54 p.m.

Introduction The Revising Aggregations: The AVG Function problem on HackerRank is focused on learning how to use the AVG() function in SQL. This function is used to calculate the average

HackerRank: Revising Aggregations - SUM Solution in SQL

OJ Solutions | April 12, 2025, 4:53 p.m.

Introduction The Revising Aggregations: SUM problem on HackerRank requires you to use the SUM() function to compute the total population of cities in a specific district. In this case, the

HackerRank: Revising Aggregations: The COUNT Function Solution in SQL

OJ Solutions | April 12, 2025, 4:49 p.m.

Introduction The Revising Aggregations: The COUNT Function problem on HackerRank focuses on using the COUNT function to perform aggregations on your data. In this case, you need to count how

HackerRank: What Type of Triangle Solution in SQL

OJ Solutions | April 12, 2025, 4:48 p.m.

Introduction The What Type of Triangle problem on HackerRank tests your ability to classify triangles based on their side lengths using SQL. In this challenge, you are tasked with determining

HackerRank: Salary of Employees Solution in SQL

OJ Solutions | April 12, 2025, 4:46 p.m.

Introduction The Salary of Employees problem on HackerRank tests your SQL skills, particularly how to filter and sort data based on multiple conditions. In this problem, you are required to

HackerRank: Name of Employees Solution in SQL

OJ Solutions | April 12, 2025, 4:44 p.m.

Introduction The Name of Employees problem on HackerRank tests your basic SQL skills, specifically how to select and sort data from a table. In this problem, you are required to

HackerRank: More than 75 Marks Solution in MySQL and Oracle SQL

OJ Solutions | April 12, 2025, 4:43 p.m.

Introduction The More than 75 Marks problem from HackerRank requires you to retrieve student names from the STUDENTS table where the marks are greater than 75. The result should be

HackerRank: Weather Observation Station 12 Solution in SQL

OJ Solutions | April 12, 2025, 4:41 p.m.

Introduction The Weather Observation Station 12 problem from HackerRank challenges you to filter cities from the STATION table, retrieving distinct cities that do not start or end with vowels. This

HackerRank: Weather Observation Station 11 Solution in SQL

OJ Solutions | April 12, 2025, 4:39 p.m.

Introduction The Weather Observation Station 11 problem from HackerRank tests your ability to use SQL's pattern matching operators to filter city names based on whether they neither start nor end

HackerRank: Weather Observation Station 10 Solution in SQL

OJ Solutions | April 12, 2025, 4:37 p.m.

Introduction The Weather Observation Station 10 problem from HackerRank tests your ability to use SQL's pattern matching to filter strings that do not meet a certain condition. Specifically, the goal

HackerRank: Weather Observation Station 8 Solution in SQL

OJ Solutions | April 12, 2025, 4:35 p.m.

Introduction The HackerRank SQL problem Weather Observation Station 8 challenges your understanding of SQL string filtering using pattern matching. In this task, you're required to identify city names that both

HackerRank: Weather Observation Station 7 Solution in SQL

OJ Solutions | April 12, 2025, 4:33 p.m.

Introduction The HackerRank SQL challenge "Weather Observation Station 7" is an excellent problem to practice string pattern matching using SQL's LIKE operator. This exercise helps improve your filtering skills using

HackerRank: Weather Observation Station 6 Solution in SQL

OJ Solutions | April 12, 2025, 4:32 p.m.

Introduction The HackerRank problem "Weather Observation Station 6" is a beginner-level SQL challenge that focuses on string pattern matching using the LIKE clause. The objective is to select cities from

HackerRank: Weather Observation Station 5 Solution in SQL and Oracle

OJ Solutions | April 12, 2025, 4:30 p.m.

Introduction The "Weather Observation Station 5" problem from HackerRank asks us to retrieve the city with the shortest and longest names from the STATION table. The challenge is focused on

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