The following documentation comment has been logged on the website: Page: https://www.postgresql.org/docs/10/static/sql-prepare.html Description:
The backend protocol limits the number of parameters that can be passed for a prepared statement to 32767 (2 byte signed integer). As that is something that is independent of the client library, I think this should be documented in the user facing manual for the Postgres server somewhere. I did not find anything in the chapter about PREPARE https://www.postgresql.org/docs/current/static/sql-prepare.html or about the backend protocol: https://www.postgresql.org/docs/current/static/protocol.html nor on the FAQ page: https://wiki.postgresql.org/wiki/FAQ
