Exception classes

Classes
struct	pqxx::failure
	Run-time failure encountered by libpqxx, similar to std::runtime_error. More...
struct	pqxx::broken_connection
	Exception class for lost or failed backend connection. More...
class	pqxx::sql_error
	Exception class for failed queries. More...
struct	pqxx::in_doubt_error
	"Help, I don't know whether transaction was committed successfully!" More...
struct	pqxx::transaction_rollback
	The backend saw itself forced to roll back the ongoing transaction. More...
struct	pqxx::serialization_failure
	Transaction failed to serialize. Please retry it. More...
struct	pqxx::statement_completion_unknown
	We can't tell whether our last statement succeeded. More...
struct	pqxx::deadlock_detected
	The ongoing transaction has deadlocked. Retrying it may help. More...
struct	pqxx::internal_error
	Internal error in libpqxx library. More...
struct	pqxx::usage_error
	Error in usage of libpqxx library, similar to std::logic_error. More...
struct	pqxx::argument_error
	Invalid argument passed to libpqxx, similar to std::invalid_argument. More...
struct	pqxx::conversion_error
	Value conversion failed, e.g. when converting "Hello" to int. More...
struct	pqxx::conversion_overrun
	Could not convert value to string: not enough buffer space. More...
struct	pqxx::range_error
	Something is out of range, similar to std::out_of_range. More...
struct	pqxx::unexpected_rows
	Query returned an unexpected number of rows. More...
struct	pqxx::feature_not_supported
	Database feature not supported in current setup. More...
struct	pqxx::data_exception
	Error in data provided to SQL statement. More...
struct	pqxx::integrity_constraint_violation
struct	pqxx::restrict_violation
struct	pqxx::not_null_violation
struct	pqxx::foreign_key_violation
struct	pqxx::unique_violation
struct	pqxx::check_violation
struct	pqxx::invalid_cursor_state
struct	pqxx::invalid_sql_statement_name
struct	pqxx::invalid_cursor_name
struct	pqxx::syntax_error
struct	pqxx::undefined_column
struct	pqxx::undefined_function
struct	pqxx::undefined_table
struct	pqxx::insufficient_privilege
struct	pqxx::insufficient_resources
	Resource shortage on the server. More...
struct	pqxx::disk_full
struct	pqxx::out_of_memory
struct	pqxx::too_many_connections
struct	pqxx::plpgsql_error
	PL/pgSQL error. More...
struct	pqxx::plpgsql_raise
	Exception raised in PL/pgSQL procedure. More...
struct	pqxx::plpgsql_no_data_found
struct	pqxx::plpgsql_too_many_rows

Detailed Description

These exception classes follow, roughly, the two-level hierarchy defined by the PostgreSQL error codes (see Appendix A of the PostgreSQL documentation corresponding to your server version). This is not a complete mapping though. There are other differences as well, e.g. the error code statement_completion_unknown has a separate status in libpqxx as in_doubt_error, and too_many_connections is classified as a broken_connection rather than a subtype of insufficient_resources.

See also

http://www.postgresql.org/docs/9.4/interactive/errcodes-appendix.html