SQL Modify Statement Tutorial in MySQL | Alter Table Modify Column | SQL Course Part 4
SQL Modify Statement Tutorial in MySQL | Alter Table Modify Column | SQL Course Part 4
Welcome to Part 4 of the Complete SQL Course for Beginners.
In this session, you will learn how to use the SQL MODIFY statement with ALTER TABLE to change existing column definitions in MySQL. This is one of the most important SQL commands used by database developers, data analysts, SQL beginners, and backend developers while managing database structures.
Topics Covered in This Video:
• What is the MODIFY statement in SQL
• Why MODIFY is used in MySQL
• ALTER TABLE and MODIFY syntax explained
• How to change VARCHAR size in SQL
• How to modify existing column definitions
• Practical MySQL Workbench demonstration
• Real-world database schema modification examples
• Updating column length and data types
• SQL interview questions related to MODIFY statement
Example Covered:
ALTER TABLE sales
MODIFY COLUMN name VARCHAR(30);
By the end of this video, you will understand how to modify existing columns in SQL tables without recreating the table.
This SQL tutorial series is specially designed for:
• SQL Beginners
• Data Analysts
• Data Scientists
• Business Analysts
• Database Developers
• MySQL Learners
• Students Preparing for Interviews
• Working Professionals
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Timestamps
00:00 Introduction
00:08 Recap of Create Table Statement
00:35 What is SQL Modify Statement
00:58 Why We Need Modify Clause
01:25 Alter Table and Modify Overview
02:02 Uses of Modify Statement
02:05 Change Data Type Using Modify
02:18 Change Column Length Using Modify
02:25 SQL Modify Statement Syntax
02:47 Practical Modify Statement Example
03:04 MySQL Workbench Demonstration
03:21 Understanding Sales Table Structure
03:38 Modify Name Column Length
04:14 Writing Alter Table Query
04:56 Executing Modify Statement
05:15 Verifying Column Changes
05:25 Refreshing Schema in MySQL
05:31 SQL Modify Statement Summary
05:37 Session Conclusion
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