LEFT JOIN

SQL LEFT JOIN Keyword

The LEFT JOIN command is used to return all rows from the left table, and the matched rows from the right table. If there is no match, the result is NULL from the right side.

Tutorials dojo strip

SQL LEFT JOIN Syntax

SQL

SQL LEFT JOIN Patients and Appointments Example

This query returns all patients, including those who may not have any appointments. If no match is found in the Appointments table, the related columns return NULL.

SQL

SQL LEFT JOIN Prescriptions and Appointments Example

This query shows all appointments and their corresponding prescriptions (if any). Appointments without a prescription will still be shown.

SQL

SQL LEFT JOIN Labs

Tutorials dojo strip