Oracle SQL Functions and Query Design with SQL Developer

To make informed business decisions, you must be able to extract, clean, and analyze database data efficiently. Understanding how to leverage built-in database functions is the key to writing clean, high-performing SQL queries without relying on external processing tools. This text-based course guides you through the foundational and advanced functions of Oracle SQL using the SQL Developer interface. You will progress from basic data filtering to complex analytical calculations, learning how to structure query results for meaningful business insights. What you'll learn: Understand foundational database concepts and navigate the SQL Developer interface; Apply conditional functions like NVL, NVL2, and COALESCE to handle null values seamlessly; Group and aggregate complex data using ROLLUP, CUBE, and GROUPING SETS; Write analytic functions to perform running totals, rankings, and moving averages; Design optimized queries using views, indexes, and modern Common Table Expressions (CTEs); Query and manipulate modern JSON data structures directly within Oracle SQL. You will start by exploring core database definitions and setup in SQL Developer before moving on to practical query scenarios. Through written explanations and clear code syntax examples, you will practice transforming raw data into structured reports. This course is designed for beginning data analysts, database administrators, and software developers who want to build a strong foundation in SQL. No prior database experience is required. Start reading today to build your database querying skills and write cleaner, faster Oracle SQL.