PostgreSQL only supports a constant string in PREPARE TRANSACTION (as well as number of other places), and not a bind parameter. Therefore this will be documented as a known issue, and must be handled client-side (or part of a library like SQLAlchemy).
PostgreSQL only supports a constant string in PREPARE TRANSACTION (as well as number of other places), and not a bind parameter. Therefore this will be documented as a known issue, and must be handled client-side (or part of a library like SQLAlchemy).