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ALTER SESSION SET

Change a parameter value for the current session.

ALTER SESSION SET <parameter_name>=<parameter_value>

Paremeter name

Values

Alter Session Examples

CURRENT_DATABASE

Switch to another database without need of re-login.

ALTER SESSION SET CURRENT_DATABASE='owned_database';

Your session will silently switch to the requested database.

The database exists, but the user does not have access to it:

ALTER SESSION SET CURRENT_DATABASE='information_schema';
TException - service has thrown: TDBException(error_msg=Unauthorized access: 
user test is not allowed to access database information_schema.)

The database does not exist:

ALTER SESSION SET CURRENT_DATABASE='not_existent_db'; 
TException - service has thrown: TDBException(error_msg=Database name 
not_existent_db does not exist.)

EXECUTOR_DEVICE

Force the session to run the subsequent SQL commands in CPU mode:

ALTER SESSION SET EXECUTOR_DEVICE='CPU';

Switch back the session to run in GPU mode

ALTER SESSION SET EXECUTOR_DEVICE='GPU';