Copy Statement Parameters
The following are parameters for the copy statement:
tablename
Specifies an existing table from which data is read or to which data is written
columnname
Specifies the column from which data is read or to which data is written
format
Specifies the format in which a value is stored in the file
filename
Specifies the file from which data is read or to which data is written
type
(Optional) Specifies the file type: text, binary, or variable