ksqlDB for Confluent Platform Reference

Look up important information quickly as you build applications with ksqlDB.

• Syntax and Lexical Structure: Learn the make-up of the SQL language to write programs.
• Built-in functions: Invoke built-in functions shipped with ksqlDB.
• Operators: Call operators that are built in to the language.
• Server Configuration: Control how ksqlDB server behaves.
• Metrics: Observe how your cluster is behaving over time.
• User-defined Functions: Extend ksqlDB to invoke custom code written in Java.
• Processing Log: Log internal events that arise when processing rows.
• Serialization Formats: Control the format of how data is read and written.
• Java Client: Talk to ksqlDB using Java.
• REST API: Communicate with ksqlDB over an HTTP REST API.
• Quick Reference: Quickly reference the elements of the language.