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Updated on 2024-05-07 GMT+08:00

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SUMMARY_STAT_SYS_TABLES

Displays the sum of the status information in all system catalogs on each node in pg_catalog, information_schema, and pg_toast schemas. The status information in the system catalogs on each node is summed up. Columns of the timestamp type are not summed up, and only the latest values of these columns on all nodes are used.

**Table 1** SUMMARY_STAT_SYS_TABLES columns
Name	Type	Description
schemaname	name	Name of the schema where the table is located.
relname	name	Table name
seq_scan	numeric	Number of sequential scans initiated on this table
seq_tup_read	numeric	Number of live rows fetched by sequential scans
idx_scan	numeric	Number of index scans initiated on the table
idx_tup_fetch	numeric	Number of live rows fetched by index scans
n_tup_ins	numeric	Number of rows inserted
n_tup_upd	numeric	Number of rows updated
n_tup_del	numeric	Number of rows deleted
n_tup_hot_upd	numeric	Number of rows updated by HOT (that is, the number of rows whose index columns are not updated).
n_live_tup	numeric	Estimated number of live rows
n_dead_tup	numeric	Estimated number of inactive rows.
last_vacuum	timestamp with time zone	Last time at which this table was manually vacuumed (not counting VACUUM FULL)
last_autovacuum	timestamp with time zone	Last time when the table was vacuumed by the autovacuum daemon thread.
last_analyze	timestamp with time zone	Last time at which this table was manually analyzed
last_autoanalyze	timestamp with time zone	Last time when the table was analyzed by the autovacuum daemon thread.
vacuum_count	numeric	Number of times the table has been manually vacuumed (not counting VACUUM FULL)
autovacuum_count	numeric	Number of times the table has been vacuumed by the autovacuum daemon
analyze_count	numeric	Number of times the table has been manually analyzed
autoanalyze_count	numeric	Number of times the table has been analyzed by the autovacuum daemon thread.