56.1. Overview
Table 56.1 lists the system views. More detailed documentation of each catalog follows below. Except where noted, all the views described here are read-only.
Table 56.1. System Views
| View Name | Purpose |
|---|---|
pg_available_extensions | available extensions |
pg_available_extension_versions | available versions of extensions |
pg_backend_memory_contexts | backend memory contexts |
pg_config | compile-time configuration parameters |
pg_cursors | open cursors |
pg_file_settings | summary of configuration file contents |
pg_group | groups of database users |
pg_hba_file_rules | summary of client authentication configuration file contents |
pg_ident_file_mappings | summary of client user name mapping configuration file contents |
pg_indexes | indexes |
pg_locks | locks currently held or awaited |
pg_matviews | materialized views |
pg_policies | policies |
pg_prepared_statements | prepared statements |
pg_autoprepared_statements | autoprepared statements |
pg_prepared_xacts | prepared transactions |
pg_publication_tables | publications and information of their associated tables |
pg_replication_origin_status | information about replication origins, including replication progress |
pg_replication_slots | replication slot information |
pg_roles | database roles |
pg_rules | rules |
pg_seclabels | security labels |
pg_sequences | sequences |
pg_settings | parameter settings |
pg_shadow | database users |
pg_shmem_allocations | shared memory allocations |
pg_stats | planner statistics |
pg_stats_ext | extended planner statistics |
pg_stats_ext_exprs | extended planner statistics for expressions |
pg_tables | tables |
pg_timezone_abbrevs | time zone abbreviations |
pg_timezone_names | time zone names |
pg_user | database users |
pg_user_mappings | user mappings |
pg_views | views |