module PgConn
class PgConn::Connection
class PgConn::Error
class PgConn::Literal
class PgConn::PsqlError
class PgConn::RdbmsMethods
class PgConn::RoleMethods
class PgConn::Rollback
class PgConn::SchemaMethods
class PgConn::SessionMethods
pg_conn
0.28.0
Can be raised in #transaction blocks to rollback changes