Query all attributes of every Japanese city in the CITY table. The COUNTRYCODE for Japan is JPN.

 The CITY table is described as follows:


THEORY:

When working with relational databases, we often need to extract specific data based on certain conditions. In this case, we're working with a table named CITY, which contains data about various cities around the world.

✅ Objective

Retrieve all attributes (columns) of every city in Japan, where the COUNTRYCODE is 'JPN'.

๐Ÿ“‹ Understanding the Table Structure

The CITY table might typically look like this:

IDNameCountryCodeDistrict    Population
1    Tokyo                JPNTokyo    9000000
2    Osaka       JPNOsaka    2700000
3    New York       USANew York    8000000

๐Ÿ› ️ Key Concepts

  • SELECT *: This is used to select all columns from a table.

  • WHERE clause: Used to filter records based on a specified condition.

  • = operator: Used for exact matching.

๐Ÿ” SQL Query Format

SELECT * FROM CITY WHERE COUNTRYCODE = 'JPN';

๐Ÿง  What This Does:

  • SELECT *: Gets all columns (e.g., ID, Name, District, Population, etc.).

  • FROM CITY: Tells SQL to pull data from the CITY table.

  • WHERE COUNTRYCODE = 'JPN': Restricts the output to only Japanese cities.


SOLUTION:

SELECT * FROM CITY WHERE COUNTRYCODE='JPN';

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