COPY can also be used to stream data directly from a real PostgreSQL database to Cloud Spanner. This makes it easy to quickly copy an entire table from PostgreSQL to Cloud Spanner, or to generate test ...

PostgreSQL's COPY command allows to copy data from stdin, the standard input, to a table; and vice-versa. That way, you can do this: COPY students FROM stdin; 1 Denholm Gladwin 33 2 Becka Morris 31 ...