PG_STAT_SYS_TABLES
PG_STAT_SYS_TABLES displays statistics about the system catalogs of all the namespaces in pg_catalog and information_schema schemas.
Table 1 PG_STAT_SYS_TABLES columns
Name | Type | Description |
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relid | oid | OID of a table |
schemaname | name | Schema name of the table |
relname | name | Table name |
seq_scan | bigint | Number of sequential scans initiated on the table |
seq_tup_read | bigint | Number of live rows fetched by sequential scans |
idx_scan | bigint | Number of index scans initiated on the table |
idx_tup_fetch | bigint | Number of live rows 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 HOT updated (with no separate index update 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 when the table was manually vacuumed (excluding VACUUM FULL) |
last_autovacuum | timestamp with time zone | Last time when the table was vacuumed by the autovacuum daemon |
last_analyze | timestamp with time zone | Last time when the table was manually analyzed |
last_autoanalyze | timestamp with time zone | Last time when the table was analyzed by the autovacuum daemon |
vacuum_count | bigint | Number of times the table has been manually vacuumed (not counting VACUUM FULL) |
autovacuum_count | bigint | Number of times the table has been vacuumed by the autovacuum daemon |
analyze_count | bigint | Number of times the table has been manually analyzed |
autoanalyze_count | bigint | Number of times the table has been analyzed by the autovacuum daemon |
last_data_changed | timestamp with time zone | Last modification time of the table data |
openGauss 2024-09-07 01:01:32