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SQLite Exercise: Get the number of jobs available in the employees table

Write a query to get the number of jobs available in the employees table.

Sample table : employees


SQLite Code :

SELECT COUNT(DISTINCT job_id) 
FROM employees;

Output:

COUNT(DISTINCT job_id)
----------------------
19

Relational Algebra Expression:

Relational Algebra Expression: Get the number of jobs available in the employees table.

Relational Algebra Tree:

Relational Algebra Tree: Get the number of jobs available 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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