Trino Db2 connector

This is a plugin for Trino that allow you to use IBM Db2 Jdbc Connection

Notice that it requires the connected database to be Db2 10 or Db2 LUW 9.7+ or greater versions to meet the precision need of the timestamp data type.

See DEVELOPMENT for information on development process.

Limitation

It supports read/write Timestamp data type up to precision 9 while higher precision will not be preserved.

Connection Configuration

Create new properties file like <catalog-name>.properties inside etc/catalog dir:

connector.name=db2
connection-url=jdbc:db2://ip:port/database
connection-user=myuser
connection-password=mypassword

For a connection with SSL, uses following JDBC URL strings as connection-url:

connection-url=jdbc:db2://ip:port/database:sslConnection=true;

Notices:

• the trailing semi-colon is required. Or it will throw SQLException Invalid database URL syntax.
• You can use db2.iam-api-key to specify API Key instead of user/password if IAM authentication is supported.

See the official document of Db2 JDBC details from the article Connecting programmatically with JDBC.

Configuration Properties

Property Name	Description
db2.varchar-max-length	max length of VARCHAR type in a CREATE TABLE or ALTER TABLE command. default is 32672
db2.iam-api-key	API Key of IBM Cloud IAM. Use this when choosing IAM authentication instead of user/password

Notice: you may need to customize value of db2.varchar-max-length to 32592 when using Db2 warehouse.

Extra credentials Support

Since release 324, it starts to support the idea of extra credentials where it allows trino client user to provide Db2 username and password as extra credentials that are passed directly to the backend Db2 server when running a query.

1. configure this for the Db2 connector catalog properties file:

user-credential-name=db2_user
password-credential-name=db2_password

2. passing credentials directly to Db2 server:

trino --extra-credential db2_user=user1 --extra-credential db2_password=secret

See details from this answer.