This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12345]

Ccolumn
▼Cdut_base
Cdut_libpq
Cdut_monetdb
Cdut_pqxx
Cdut_sqlite
▼Cstd::exception
▼Cdut::failure
Cdut::broken
Cdut::syntax
Cdut::timeout
▼Clogger	Logger base class
Cast_logger
Cimpedance_feedback
Cquery_dumper	Logger to dump all generated queries
▼Cstats_collecting_logger	Logger for statistics collection
Ccerr_logger	Stderr logger
Cpqxx_logger	Logger to postgres database
▼Cmonetdb_connection
Cdut_monetdb
Cschema_monetdb
Cop
▼Cprod	Base class for AST nodes
Ccommon_table_expression
Cfrom_clause
▼Cjoin_cond
Cexpr_join_cond
Csimple_join_cond
▼Cmodifying_stmt
▼Cdelete_stmt
Cdelete_returning
▼Cinsert_stmt
Cupsert_stmt
Cmerge_stmt
▼Cupdate_stmt
Cupdate_returning
Cprepare_stmt
▼Cquery_spec
Cselect_for_update
Cselect_list
Cset_list
▼Ctable_ref
Cjoined_table
Ctable_or_query_name
Ctable_sample
▼Ctable_subquery
Clateral_subquery
Ctarget_table
▼Cvalue_expr
Catomic_subselect
▼Cbool_expr
▼Cbool_binop
Cbool_term
Ccomparison_op
Cdistinct_pred
Cexists_predicate
Cnull_predicate
Ctruth_value
Ccase_expr
▼Ccoalesce
Cnullif
Ccolumn_reference
Cconst_expr
Cfuncall
Cwindow_function
▼Cwhen_clause
Cwhen_clause_insert
Cwhen_clause_update
▼Cprod_visitor	Base class for walking the AST
Cfor_update_verify
Cgraphml_dumper
Cimpedance_visitor
Cstats_visitor
▼Crelation
▼Cnamed_relation
Caliased_relation
Ctable
Croutine
▼Cschema
Cschema_monetdb
Cschema_pqxx
Cschema_sqlite
Cscope
▼Csqlite_connection
Cdut_sqlite
Cschema_sqlite
▼Csqltype
Cpg_type