MySQL DQL commands | Relational Database and SQL (Part 9) | CBSE Class 12 Computer Science
Master MySQL DQL Commands: SELECT, WHERE, DISTINCT | SQL for CBSE Class 12 (Part 9)
Welcome to the Part 9 series of the Relational Database and SQL. In this video, we explore the essential MySQL DQL (Data Query Language) commands. This comprehensive tutorial focuses on querying and retrieving data from a database using SQL, covering the SELECT statement, WHERE clause, and DISTINCT keyword with practical examples and detailed explanations.
Topics Covered:
Introduction to DQL Commands:
Overview of Data Query Language (DQL) in SQL.
Importance of DQL commands in retrieving specific data from a database.
SQL SELECT Statement:
Syntax and usage of the SELECT statement to retrieve data from one or more tables.
Practical examples demonstrating various SELECT queries.
Using WHERE Clause:
How to filter query results using the WHERE clause.
Examples of using comparison operators and logical operators in WHERE conditions.
Displaying Query Result:
Explanation of how to display and format query results.
Tips for optimizing query performance and readability.
Using DISTINCT Clause:
Understanding the DISTINCT keyword to eliminate duplicate rows from query results.
Practical scenarios where DISTINCT is useful.
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Relational Database and SQL (Part 1) for Class 12 Computer Science
This video covers - Introduction to DBMS, File Organization Hierarchy, Database Management System (DBMS), Need for DBMS, Components of a Database System, Advantages of DBMS, Use of Database in Real-life Situations. Each subheading contains the Key points. Easily understandable, Beginner's Guide to DBMS.
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Relational Database and SQL (Part 2) for Class 12 Computer Science
This video covers - DBMS Models, Hierarchical Data Model, Network Data Model, Relational Data Model, Advantages, Limitations, Difference between Hierarchical data model, Network data model and Relational data model.
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Relational Database and SQL (Part 3) for Class 12 Computer Science
This video covers - Relational Database concepts, Database Keys, Primary Key, Candidate Key, Alternate Key, Foreign Key
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Relational Database and SQL (Part 4) for Class 12 Computer Science
This video covers - Introduction to SQL, Overview of SQL and MySQL, Features of SQL, Advantages of SQL and MySQL, Classification of SQL Statements, DDL(Data Definition Language), DML(Data Manipulation Language), DQL(Data Query Language), Difference between DDL and DML
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This video covers SQL Data Types and SQL Constraints
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Relational Database and SQL (Part 6) for Class 12 Computer Science
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Relational Database and SQL (Part 7) for Class 12 Computer Science
This video covers SQL DDL commands.
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Relational Database and SQL (Part 8) for Class 12 Computer Science
This video covers SQL DML commands.
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Relational Database and SQL (Part 9) for Class 12 Computer Science
This video covers SQL DQL commands.
• MySQL DQL commands | Relational Datab...
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Relational Database and SQL (Part 10) for Class 12 Computer Science
This video covers SQL Operators.
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