SQL Subquery

Date: 2022-08-16

This tutorial explains SQL subqueries using PostgreSQL. It covers different subquery types: single-row, multiple-row (using IN, NOT IN, ANY), INSERT INTO ... SELECT, and DELETE with subqueries, and correlated subqueries. The tutorial uses example tables (students and student marks) and provides SQL queries demonstrating each type. Docker is used for setting up the PostgreSQL database. The examples show how subqueries retrieve and manipulate data efficiently.

Read more: https://examples.javacodegeeks.com/subquery-in-sql/