Realtime Compute for Apache Flink:SQL development references - Realtime Compute for Apache Flink

Flink SQL is a development language that uses standard SQL semantics, which simplifies the computing model and makes Flink easier to use.

This topic describes how to use Flink SQL.

Operation		Document
Keyword		Keywords
Create a data view		Create a data view
DML data manipulation statements (INSERT INTO)		INSERT INTO statement CREATE TABLE AS (CTAS) statement CREATE DATABASE AS (CDAS) statement
DQL data query statements		Queries Dual-stream JOIN statements JOIN statements for dimension tables Interval join Complex Event Processing (CEP) statements
Window functions		Overview Tumbling windows Sliding windows Session windows OVER windows
Built-in functions		Supported functions Scalar functions Table-valued functions Aggregate functions
User-defined functions	Java	Overview User-defined scalar functions (UDSFs) User-defined aggregate functions (UDAFs) User-defined table-valued functions (UDTFs)
	Python	Overview User-defined scalar functions (UDSFs) User-defined aggregate functions (UDAFs) User-defined table-valued functions (UDTFs)