SQL Support for the Trino Connector

Trino, formerly known as PrestoSQL, supports the ANSI SQL language. The Trino connector uses Trino’s SPI interface to translate SQL language to Aerospike operations using the Aerospike Java client.

Data model

Trino is an SQL engine, but Aerospike is a NoSQL database and is schemaless. The data models are different, as shown in the following table. The Trino connector reconciles those differences to provide a seamless SQL experience. See the Aerospike data model documentation if you are not familiar with it.

Aerospike	Trino
Cluster	Catalog
Namespace	Schema
Set	Table
Record	Row
Bin	Column

Data types

The Trino connector does not support all Trino data types. You must typecast unsupported types to supported types.

Aerospike Data Type	Trino Data Type
byte[]	VARBINARY
String	VARCHAR
Integer	INTEGER
Long	BIGINT
Double	DOUBLE
Float	DOUBLE
Boolean	BOOLEAN
Byte	TINYINT
Value.ListValue	JSON
Value.MapValue	JSON
Value.GeoJSONValue	JSON
Value.HLLValue	HYPER_LOG_LOG

SQL statements

The Trino connector supports the following SQL statements:

• SHOW CATALOGS
• USE
• SHOW SCHEMAS
• SHOW TABLES
• DESCRIBE
• SELECT
• INSERT INTO
• EXPLAIN
• SET SESSION
• RESET SESSION
• SHOW SESSION
• SHOW STATS

Connector only supports READ_UNCOMMITTED transaction isolation level.