HackerRank: [SQL Basic Select] (1/20) REVISING THE SELECT QUERY - I | Filtering in SQL

I started studying SQL from a very famous site - HackerRank. Here I will try to provide multiple approaches & solutions to the same problem. It will help you learn and understand SQL in a better way.

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Recommended SQL Courses:

1. Udemy: SQL - MySQL for Data Analytics and Business Intelligence
2. LinkedIn: Master SQL for Data Science
3. edX: Databases: Advanced Topics in SQL
4. edureka: SQL Essentials Training & Certification
5. Coursera: Learn SQL Basics for Data Science
6. Eduonix: SQL Queries

SQL Problem Statement:

Query all columns for all American cities in the CITY table with populations larger than 100000. The CountryCode for America is USA.

The CITY table is described as follows:

Table: CITY

Sample data in Table (CITY):

ID NAME COUNTRYCODE DISTRICT POPULATION
6 Rotterdam NLD Zuid-Holland 593321
3878 Scottsdale USA Arizona 202705
3965 Corona USA California 124966
3973 Concord USA California 121780
3977 Cedar Rapids USA Iowa 120758
3982 Coral Springs USA Florida 117549
4054 Fairfield USA California 92256
4058 Boulder USA Colorado 91238
4061 Fall River USA Massachusetts 90555

Solution (MySQL Query):

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

Sample Output:

3878 Scottsdale USA Arizona 202705
3965 Corona USA California 124966
3973 Concord USA California 121780
3977 Cedar Rapids USA Iowa 120758
3982 Coral Springs USA Florida 117549

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-Akshay P Daga