The just published ODB C++ ORM version 2.5.0-b.21 adds support for bulk operations in PostgreSQL using the new pipeline mode introduced in libpq 14.
For background on bulk operations (which until now were only available in ODB when using Oracle and SQL Server) see Section 15.3, "Bulk Database Operations" in the ODB manual.
Note that while this functionality requires libpq version 14 or later, it should be usable with PostgreSQL servers version 7.4 or later. The development of this support was sponsored by Qube Research & Technologies Limited.
Both ODB 2.5.0-b.21 and libpq 14.0.0 packages are available from the cppget.org package repository. For instructions on building this version of ODB, see Installation Instructions.