Discover ten powerful MySQL features—including CTEs, window functions, conditional aggregation, JSON handling, generated columns, and UPSERT tricks—illustrated with real‑world examples and performance tips, so you can write SQL that is more efficient, maintainable, and production‑ready.
Discover eight powerful, lesser‑known MySQL 8.0 features—including window functions, descending indexes, generated columns, invisible indexes, hints, resource groups, LATERAL JOIN, and multi‑valued JSON indexes—that can dramatically improve query performance, simplify code, and give you an edge in interviews and production environments.
This article explains the evolution from traditional data warehouses to data lakes and the modern Lakehouse architecture, introduces Delta Lake's core concepts, multi‑hop medallion tables, ACID transactions, generated columns, standalone support, and future open‑source directions.
The article explains MySQL functional (expression) indexes, how they are implemented via generated columns, demonstrates their creation and performance benefits for datetime and JSON fields, compares them with prefix indexes, and offers guidance for older MySQL versions.
MySQL 5.7 introduces generated (virtual) columns, allowing you to store computed values such as day‑of‑week without extra storage, enabling indexed queries that bypass function‑based limitations, improving read performance while avoiding the write‑time overhead and redundancy of manual columns.
