Big Data Technology & Architecture

Mar 19, 2019 · Big Data

Comprehensive Overview of SQL and Apache Flink SQL Features with Practical Code Examples

This article provides an in-depth introduction to SQL, its history and ANSI standards, then details Apache Flink's SQL capabilities—including SELECT, WHERE, GROUP BY, UNION, JOIN, window functions, and user-defined functions—accompanied by extensive code examples and a complete end‑to‑end Flink job implementation.