COPY TO copies data from a table to a file (or standard input) on the Greenplum master host using a single process on the Greenplum master instance. Use COPY to output a table’s entire contents, or filter the output using a SELECT statement. For example:

    1. COPY (SELECT * FROM country WHERE country_name LIKE 'A%') 
    2. TO '/home/gpadmin/a_list_countries.out';

    Parent topic: Unloading Data from Greenplum Database