The nzsql command invokes a SQL command interpreter on the IBM® Netezza®.
The nzsql command invokes a SQL command interpreter on the IBM® Netezza® host or on a UNIX client system. You can use this SQL command interpreter to create database objects, run queries, and manage the database. This command is not available for Windows platform.
IBM Documentation: https://www-304.ibm.com/support/knowledgecenter/SSULQD_7.1.0/com.ibm.nz.adm.doc/r_sysadm_nzsql_command.html