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Introduction
1. Welcome
INSERT with SELECT
Referring to other tables
INSERT, UPDATE, and DELETE with subqueries
Summary

Instruction

Welcome to Part 4 of "PostgreSQL INSERT, UPDATE, and DELETE Commands." Today, we will learn about using INSERT, UPDATE, and DELETE operations that refer to other tables. Knowing how to use these structures will enhance your PostgreSQL skills.

First, let's familiarize ourselves with the database we will be working with. The database of an online store has four main tables: customer, employee, product, and purchase. The store wants to add a reporting and archiving system. In this part, you'll be helping the staff fill in new reporting and archiving tables.

Exercise

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