Iceberg data types

Understand how data types are mapped between RisingWave and Apache Iceberg for sources and sinks.

This guide shows how data types are mapped between RisingWave and Apache Iceberg. This mapping applies when you are reading data from an Iceberg source or writing data to an Iceberg sink.

RisingWave Type	Iceberg Type	Notes
BOOLEAN	boolean
SMALLINT	int
INT	int
BIGINT	long
REAL	float
DOUBLE PRECISION	double
VARCHAR	string
BYTEA	binary
DECIMAL(p,s)	decimal(p,s)
TIME	time
DATE	date
TIMESTAMP	timestamp
TIMESTAMPTZ	timestamptz
INTERVAL	string	Serialized as string
JSONB	string	Serialized as JSON string
ARRAY	list
STRUCT	struct
MAP	map