语法如下：

COPY table_name [ ( column_name [, ...] ) ]

    FROM { 'filename' | PROGRAM 'command' | STDIN }

    [ [ WITH ] ( option [, ...] ) ]

COPY { table_name [ ( column_name [, ...] ) ] | ( query ) }

    TO { 'filename' | PROGRAM 'command' | STDOUT }

    [ [ WITH ] ( option [, ...] ) ]

具体示例可参考：
https://www.modb.pro/db/405694