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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

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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

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Updating and Deleting Records in SQL: A Comprehensive Guide

Learn how to update and delete records in SQL with syntax, examples, best practices, optimization tips, and real-world scenarios for PostgreSQL, MySQL, and Oracle

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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.

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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.

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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

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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.

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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

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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.

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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

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Stored Procedures and Functions in SQL: A Comprehensive Guide

Learn SQL stored procedures and functions with examples, best practices, and real-world use cases to optimize database logic for PostgreSQL, MySQL, and Oracle.

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Triggers and Event-Driven Actions in SQL: A Comprehensive Guide

Learn SQL triggers and event-driven actions with examples, best practices, use cases, and performance tips for PostgreSQL, MySQL, and Oracle databases

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Executing SQL Queries with JDBC Statement: A Complete Java Guide

Learn how to execute SQL queries with JDBC Statement in Java, including examples, best practices, security tips, and performance optimization techniques

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