SQL DML Commands Tutorial | Insert, Select, Update, Delete in SQL (Hindi) | LnE Educations
In today's tutorial, we will discuss about SQL DML (Data Manipulation Language) Commands. While DDL commands are used to create the structure of a table, DML commands allow you to work directly with data. If you want to learn how to add, view, modify, or remove data from an SQL database, this video is for you!
We break down the four core DML operations: INSERT, SELECT, UPDATE, and DELETE with their syntax, practical examples, and important rules to avoid execution errors.
💡 What you will learn in this video:
Common errors while naming tables/columns (handling blank spaces using underscores).
How to insert single or partial records using the INSERT command.
How to use the SELECT command along with the WHERE clause to display data.
Using the wildcard * (asterisk) to fetch all columns.
Modifying specific table rows safely with the UPDATE command.
Removing unwanted records without losing the table structure using the DELETE command.
Why the WHERE clause is critical for UPDATE and DELETE operations.
⏱️ Timestamps:
[00:08] - Introduction to DML Commands & Common Naming Errors (Blank Space Issue)
[02:10] - What are DML Commands? (Insert, Select, Update, Delete)
[02:26] - INSERT Command Syntax & Examples (Full & Partial Insertion)
[08:10] - SELECT Command Syntax, Using * (All Columns) & WHERE Clause
[13:46] - UPDATE Command Syntax & Importance of WHERE Clause in Updates
[16:52] - DELETE Command Syntax & How to prevent accidental data loss
[19:25] - Summary & Next Class Preview (Operators in SQL)
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