Question

SELECT c.code AS country_code, c.name, e.year, e.inflation_rate

FROM countries AS c
INNER JOIN economies AS e
ON c.code = e.code;

Answer 1

The SQL query involves an INNER JOIN to link data from 'countries' and 'economies' tables based on country code, showing country name, year, and inflation rate.

Step-by-step explanation:

The SQL query presented in the question is designed to retrieve data that links countries to their economic data, specifically the inflation rate per year. The INNER JOIN clause is used to combine the rows from the 'countries' table and the 'economies' table where the country codes match.

The results will include the country code, the name of the country, the year of the reported economic data, and the associated inflation rate. This kind of query is fundamental in database management and analysis, which are key components of the Computers and Technology field. Such queries help in generating insightful reports and are commonly used in the business and economic sector for data analysis.