Data Reshaping in SQL: Pivot, Unpivot, Rollup, and Cube

Raw data is rarely structured exactly how you need it for reporting or analysis. Knowing how to reshape and aggregate your datasets directly within SQL saves time and unlocks deeper analytical insights. This text-based course guides you through the foundational concepts of data transformation. You will transition from writing basic queries to confidently restructuring tables and generating multi-dimensional summary rows using industry-standard SQL techniques. What you'll learn: - Understand the core concepts of pivoting and unpivoting to change dataset orientation. - Write SQL queries that rotate rows into columns and columns into rows. - Implement ROLLUP and CUBE to generate hierarchical and multi-dimensional aggregations. - Apply modern SQL practices, including handling null values and optimizing query readability. - Compare the performance and use cases of GROUPING SETS versus traditional aggregation methods. You will start with key terminology and foundational database structures before diving into step-by-step written explanations of each transformation command. Through clear examples and structured exercises, you will practice writing and analyzing these advanced queries. This course is designed for beginner data analysts, database administrators, and SQL enthusiasts who understand basic queries and want to expand their data manipulation skills. No advanced database experience is required. Start reading today to master the art of SQL data transformation.