### - u -

- undefined_column() : pqxx::undefined_column
- undefined_function() : pqxx::undefined_function
- undefined_table() : pqxx::undefined_table
- underflow() : pqxx::field_streambuf< CHAR, TRAITS > , pqxx::largeobject_streambuf< CHAR, TRAITS >
- unesc_raw() : pqxx::connection_base , pqxx::transaction_base
- unexpected_rows() : pqxx::unexpected_rows
- unique() : pqxx::internal::unique< GUEST >
- unique_violation() : pqxx::unique_violation
- unprepare() : pqxx::connection_base
- unregister_guest() : pqxx::internal::unique< GUEST >
- unregister_me() : pqxx::internal::transactionfocus
- usage_error() : pqxx::usage_error
- username() : pqxx::connection_base