Views in SQL: A Comprehensive Guide to Virtual Tables
Learn what SQL views are, how to create and use them with examples, best practices, real-world use cases, and optimization tips for PostgreSQL, MySQL, and Oracle
Tutorials under 'SQL'
Combining Results with UNION and INTERSECT in SQL: A Complete Guide
Learn how to combine results using UNION and INTERSECT in SQL with syntax, examples, best practices, and performance tips for PostgreSQL, MySQL, and Oracle.
Subqueries in SQL: A Comprehensive Guide to Nested Queries
Learn SQL subqueries with examples, use cases, optimization tips, and best practices for PostgreSQL, MySQL, and Oracle to write efficient nested queries
SQL Joins – Advanced and Self Joins Explained with Examples
Learn advanced SQL join techniques including self joins, cross joins, and complex multi-table joins with examples, use cases, and optimization tips.
SQL Joins – Inner and Outer Joins Explained with Examples
Learn SQL INNER JOIN and OUTER JOIN with examples, use cases, performance tips, and best practices for PostgreSQL, MySQL, and Oracle relational databases
GROUP BY and HAVING Clauses in SQL: A Complete Guide
Learn how to use GROUP BY and HAVING clauses in SQL with examples, best practices, and optimization tips for PostgreSQL, MySQL, and Oracle databases.
SQL Aggregate Functions: A Complete Guide to Summarizing Data
Learn SQL aggregate functions with syntax, examples, best practices, performance tips, and real-world scenarios for PostgreSQL, MySQL, and Oracle databases.
Sorting and Limiting Results in SQL: Mastering ORDER BY and LIMIT Clauses
Learn how to sort and limit SQL query results using ORDER BY and LIMIT clauses with syntax, examples, optimization tips, and best practices for major RDBMS.
Filtering Data Using WHERE in SQL: A Complete Guide to Precise Queries
Learn how to use the WHERE clause in SQL to filter data effectively with syntax, examples, optimization tips, and best practices for PostgreSQL, MySQL, and Oracle
Selecting Data with SQL: A Complete Beginner’s Guide to Querying Databases
Master SQL SELECT queries with syntax, examples, best practices, optimization tips, and real-world use cases for PostgreSQL, MySQL, and Oracle databases
Inserting Data into Tables in SQL: A Comprehensive Guide
Learn how to insert data into SQL tables with syntax, examples, best practices, optimization tips, and real-world use cases for PostgreSQL, MySQL, and Oracle databases
Creating and Altering Tables in SQL: A Comprehensive Guide
Learn how to create and alter tables in SQL with detailed examples, best practices, performance tips, and use cases for PostgreSQL, MySQL, and Oracle databases.
Creating and Dropping Databases in SQL: A Complete Beginner’s Guide
Learn how to create and drop databases in SQL with commands, best practices, common mistakes, real-world examples, and tips for PostgreSQL, MySQL, and Oracle.
Primary Keys and Foreign Keys: Ensuring Data Integrity in Relational Databases
Learn everything about primary keys and foreign keys with SQL examples, use cases, best practices, and optimization tips for robust relational database design.
Tables, Columns, and Data Types: Building Blocks of Relational Databases
Learn the fundamentals of tables, columns, and data types with SQL examples, best practices, optimization tips, and real-world use cases for efficient database design.
Database Design and ER Diagrams: A Complete Beginner’s Guide
Learn database design principles, ER diagram creation, best practices, SQL examples, and real-world use cases to build efficient, scalable relational databases
Relational Database Concepts: A Complete Beginner’s Guide
Master relational database concepts with SQL examples, best practices, real-world use cases, and optimization tips in this in-depth beginner-friendly guide
Introduction to Databases: A Beginner's Guide to Understanding Data Management
Learn what databases are, why they matter, core concepts, SQL examples, use cases, best practices, and FAQs in this comprehensive beginner's guide.