Flink SQL reference - E-MapReduce - Alibaba Cloud Documentation Center

Flink SQL is a programming language developed by Alibaba Cloud to simplify the computing model of Realtime Compute for Apache Flink and to decrease the requirements for user skills. Flink SQL complies with standard SQL syntax.

This topic describes how to use Flink SQL.

Operation		Document
Keywords		Keywords
Create a data view		Create a data view
DML statements (INSERT INTO)		INSERT INTO statement CREATE TABLE AS (CTAS) statement CREATE DATABASE AS (CDAS) statement
DQL statements		Queries statement Stream-stream JOIN statement Dimension table JOIN statement Interval JOIN statement Complex event processing (CEP) statement
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)