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SQLite Exercise: Get the average salary and number of employees in the employees table

Write a query to get the average salary and number of employees in the employees table.

Sample table : employees


SQLite Code :

SELECT AVG(salary), COUNT(*) 
FROM employees;

Output:

AVG(salary)       COUNT(*)
----------------  ----------
6461.68224299065  107

Relational Algebra Expression:

Relational Algebra Expression: Get the average salary and number of employees in the employees table.

Relational Algebra Tree:

Relational Algebra Tree: Get the average salary and number of employees in the employees table.

Practice SQLite Online


Model Database

Employee Model  Database - w3resource online SQLite practice

Structure of 'hr' database :

hr database

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