mysql tutorial #3 for beginners in hindi | dml commands in sql

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In this SQL practice video, we’ll explore various SELECT query examples to retrieve data from a table. We’ll be working with a laptop table as an example throughout the video.

SELECT all columns:
Learn how to fetch all columns from the laptop table using a simple SELECT query.

Filter columns:
Discover how to filter specific columns from the laptop table, allowing you to focus on essential data.

Alias | Renaming columns:
Understand how to give user-friendly names to columns using aliases, making the output more readable.

Split a column data into multiple columns:
Learn how to split data within a column into multiple columns, particularly useful when dealing with structured data.

Create expression using columns:
Explore how to perform calculations and create new expressions based on existing column data.

Constant value:
Discover how to add constant values as new columns to the output, providing additional context to the data.

DISTINCT(unique) values from a column:
Learn how to retrieve unique values from a specific column using the DISTINCT keyword.

DISTINCT combinations:
Understand how to get distinct combinations of columns, which can be valuable when analyzing relationships.

Filter rows using the WHERE clause:
Explore the WHERE clause to filter rows based on specific conditions, such as filtering laptops of a particular brand or price range.

IN and NOT IN Operator:
Learn how to filter rows based on multiple values using the IN and NOT IN operators.

Lastly, we’ll demonstrate how to alter the laptop table’s column names using dynamic SQL queries to match the descriptive names provided in the first row of the database.

Join us in this SQL practice session to gain hands-on experience with SELECT queries and improve your data retrieval skills!

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