From https://www.postgresql.org/docs/current/sql-copy.html: |> binary-format file is less portable across machine architectures and PostgreSQL versions In my experience, the binary encoding of binding/resultset/copy is endian neutral (network byte order), so what is the less portable across machine architectures that warning about? Also, does the code for per-type _send() and _recv() functions really change across versions of PostgreSQL? How common are instances of such changes across versions? Any examples of such backward-incompatible changes, in the past? The binary data contains OIDs, but if sticking to built-in types, which OIDs are unlikely to change across versions? I'm obviously storing COPY BINARY data (we have lots of bytea columns), and I wonder how bad it is long term, and across PostgreSQL versions. Thanks for any insights, --DD
