Weather Observation Station 5 | SQL | Basic Select | HackerRank | Solution

 

Problem : https://www.hackerrank.com/challenges/weather-observation-station-5/problem

Solution :

/*

Enter your query here.

*/

(

SELECT CITY , LENGTH(CITY) FROM STATION ORDER BY LENGTH(CITY), CITY LIMIT 1

) 

UNION

(

SELECT CITY , LENGTH(CITY) FROM STATION ORDER BY LENGTH(CITY) DESC, CITY LIMIT 1

);

Weather Observation Station 4 | Basic Select | SQL | Easy | HackerRank | Solution

 

Problem : https://www.hackerrank.com/challenges/weather-observation-station-4/problem

Solution : 

/*

Enter your query here.

*/

SELECT COUNT(CITY) - COUNT(DISTINCT(CITY)) FROM STATION;

Weather Observation Station 3 | Basic Select | SQL | HackerRank Solution

 

Problem : https://www.hackerrank.com/challenges/weather-observation-station-3/problem

Solution : 

/*

Enter your query here.

*/

SELECT DISTINCT(CITY) FROM STATION WHERE ID%2=0; 

Weather Observation Station 1 | Basic Select | SQL | HackerRank | Solution

Problem : https://www.hackerrank.com/challenges/weather-observation-station-1/problem

Solution : 

/*

Enter your query here.

*/

SELECT CITY , STATE FROM STATION;

Japanese Cities' Attributes | Basic Select | SQL | Hackerrank | Solution

Problem : https://www.hackerrank.com/challenges/japanese-cities-attributes/problem

Solution : 

SELECT * FROM CITY WHERE COUNTRYCODE="JPN";

Select All | Hackerrank | Basic Select | SQL | Basic Select | Solution

 

Problem : https://www.hackerrank.com/challenges/select-all-sql/problem

Solution : 

SELECT * FROM CITY;

Japanese Cities' Names | Hackerrank | Basic Select | SQL | Solution

 

Problem : https://www.hackerrank.com/challenges/japanese-cities-name/problem

Solution : 

SELECT NAME FROM CITY WHERE COUNTRYCODE = "JPN";

Select By ID | Basic Select | Hackerrank | Solution | SQL

 

Problem : https://www.hackerrank.com/challenges/select-by-id/problem

Solution : 

SELECT * FROM CITY WHERE ID = 1661;

Revising the Select Query II | Hackerrank | SQL | Basic Select | Solution

 

Problem : https://www.hackerrank.com/challenges/revising-the-select-query-2/problem

Solution : 

SELECT NAME FROM CITY WHERE POPULATION > 120000 AND COUNTRYCODE = "USA";

Revising the Select Query I | HackerRank | Basic Select | SQL | Complete Playlist

 PROBLEM : https://www.hackerrank.com/challenges/revising-the-select-query/problem

SOLUTION : 

SELECT * FROM CITY WHERE POPULATION > 100000 AND COUNTRYCODE = "USA";

Covariant Return Types | Advanced Java | HackerRank | Solution | Color The Code

Problem : https://www.hackerrank.com/challenges/java-covariance/problem

Solution :

Java Singleton Pattern | Advanced Java | OOP Patterns | HackerRank | Solution | Color The Code

Problem : https://www.hackerrank.com/challenges/java-singleton/problem

Solution : 

Java Factory Pattern | Advanced Java | OOP Patterns | HackerRank | Solution | Color The Code

Problem : https://www.hackerrank.com/challenges/java-factory/problem

Solution :