using COPY TO>.
+ Input data is interpreted according to the current client encoding,
+ and output data is encoded in the the current client encoding, even
+ if the data does not pass through the client but is read from or
+ written to a file.
+
+
COPY stops operation at the first error. This
should not lead to problems in the event of a COPY
happened well into a large copy operation. You might wish to invoke
VACUUM to recover the wasted space.
+