Data direction (pq\COPY::FROM_STDIN or pq\COPY::TO_STDOUT).
* Optional string $options = NULL
Any COPY options (see the [official PostgreSQL documentaion](http://www.postgresql.org/docs/current/static/sql-copy.html) for details.
Data direction (pq\COPY::FROM_STDIN or pq\COPY::TO_STDOUT).
* Optional string $options = NULL
Any COPY options (see the [official PostgreSQL documentaion](http://www.postgresql.org/docs/current/static/sql-copy.html) for details.