PG_STAT_ALL_TABLES¶
PG_STAT_ALL_TABLES displays statistics about accesses to tables in the current database, including TOAST tables.
Name | Type | Description |
---|---|---|
relid | oid | Table OID |
schemaname | name | Schema name of the table |
relname | name | Name of the table |
seq_scan | bigint | Number of sequential scans started on the table |
seq_tup_read | bigint | Number of rows that have live data fetched by sequential scans |
idx_scan | bigint | Number of index scans |
idx_tup_fetch | bigint | Number of rows that have live data fetched by index scans |
n_tup_ins | bigint | Number of rows inserted |
n_tup_upd | bigint | Number of rows updated |
n_tup_del | bigint | Number of rows deleted |
n_tup_hot_upd | bigint | Number of rows updated by HOT (no separate index update is required) |
n_live_tup | bigint | Estimated number of live rows |
n_dead_tup | bigint | Estimated number of dead rows |
last_vacuum | timestamp with time zone | Last time at which this table was manually vacuumed (excluding VACUUM FULL) |
last_autovacuum | timestamp with time zone | Last time at which this table was automatically vacuumed |
last_analyze | timestamp with time zone | Last time at which this table was analyzed |
last_autoanalyze | timestamp with time zone | Last time at which this table was automatically vacuumed |
vacuum_count | bigint | Number of vacuum operations (excluding VACUUM FULL) |
autovacuum_count | bigint | Number of autovacuum operations |
analyze_count | bigint | Number of analyze operations |
autoanalyze_count | bigint | Number of autoanalyze operations |
last_data_changed | timestamp with time zone | Last time at which this table was updated (by INSERT/UPDATE/DELETE or EXCHANGE/TRUNCATE/DROP partition). This column is recorded only on the local CN. |
Example¶
Query the last data change time in the table_test table:
SELECT last_data_changed FROM PG_STAT_ALL_TABLES WHERE relname ='table_test';
last_data_changed
-------------------------------
2024-03-27 10:28:16.277136+08
(1 row)