Weather Observation Station 3 query in SQL | HackerRank Programming Solutions | HackerRank SQL Solutions

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SQL Programming Solutions | Hackerrank Solutions | DBMS | MYSql

Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language SQL. At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.

In this post, you will find the solution for Weather Observation Station 3 query in SQL-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.

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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 Problem – Weather Observation Station 3 query in SQL – Hacker Rank Solution 

Weather Observation Station 3 query in SQL – Hacker Rank Solution

Problem:

Query a list of CITY names from STATION for cities that have an even ID number. Print the results in any order, but exclude duplicates from the answer.
The STATION table is described as follows:

1449345840 5f0a551030 Station

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

Weather Observation Station 3 query in SQL – Hacker Rank Solution
SELECT DISTINCT CITY
FROM STATION
WHERE MOD(ID, 2) = 0
ORDER BY CITY;

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