Weather Observation Station 2 in SQL | HackerRank Programming Solutions | HackerRank SQL Solutions

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Introduction To SQL

SQL stands for Structured Query Language. SQL is used to create, remove, alter the database and database objects in a database management system and to store, retrieve, update the data in a database. SQL is a standard language for creating, accessing, manipulating database management system. SQL works for all modern relational database management systems, like SQL Server, Oracle, MySQL, etc.

  • It is a standard language for Relational Database System. It enables a user to create, read, update and delete relational databases and tables.
  • All the RDBMS like MySQL, Informix, Oracle, MS Access and SQL Server use SQL as their standard database language.
  • SQL allows users to query the database in a number of ways, using English-like statements.

Link for the ProblemWeather Observation Station 2 sql – Hacker Rank Solution

Weather Observation Station 2 sql – Hacker Rank Solution

Problem:

Query the following two values from the STATION table:

  1. The sum of all values in LAT_N rounded to a scale of 2 decimal places.
  2. The sum of all values in LONG_W rounded to a scale of 2 decimal places.

Input Format

The STATION table is described as follows:

Station.jpg

where LAT_N is the northern latitude and LONG_W is the western longitude.

Output Format

Your results must be in the form:

lat lon

where  is the sum of all values in LAT_N and  is the sum of all values in LONG_W. Both results must be rounded to a scale of  decimal places.

Weather Observation Station 2 sql – Hacker Rank Solution
SELECT ROUND(SUM(LAT_N), 2), ROUND(SUM(LONG_W), 2) FROM STATION;

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