Скачать или смотреть Insert Rows Into Table - Oracle SQL Certification (1Z0-071) | Section 5, Video 1

In this lecture, we begin Section 5 by learning how to populate tables using the Oracle INSERT statement — one of the most fundamental and exam-critical SQL operations.

The INSERT statement is a DML command, meaning it directly affects data and requires transaction control using COMMIT or ROLLBACK.

🔍 What you’ll learn in this video:

What the INSERT statement is and why it’s classified as DML

Why COMMIT or ROLLBACK is required after inserting data

How session visibility works for uncommitted data

Inserting:

A single row

Multiple rows

Inserting data:

By explicitly listing columns

Without listing columns (all columns must be provided)

Using functions inside VALUES (e.g. SYSDATE)

How column order works when inserting data

Oracle’s implicit data type conversion

Converting strings to NUMBER

Converting strings to DATE

Understanding when implicit conversion fails (ORA-01722: invalid number)

Inserting data using:

INSERT INTO … SELECT

Conditional inserts with WHERE

Copying data from one table into another

Using INSERT ALL to insert multiple rows in a single statement

Why SELECT FROM DUAL is required in INSERT ALL

Which INSERT techniques are exam-relevant and which are not

📌 Key concepts emphasized for the exam:

INSERT is a DML statement

Data is not permanent until COMMIT

Column order matters only if columns are not specified

Implicit conversion works only when values are convertible

INSERT INTO … SELECT is a common and important pattern

⚠️ Exam tip:

This is a core SQL topic that is guaranteed to be tested. Make sure you understand:

Every INSERT syntax variation

How Oracle handles data types

How to insert multiple rows efficiently

This lecture lays the foundation for all upcoming DML operations, so take your time, practice the examples, and I’ll see you in the next lesson.