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  5. PG_STAT_SYS_TABLES

PG_STAT_SYS_TABLES

PG_STAT_SYS_TABLES displays the statistics information 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

relid

oid

OID of the table

schemaname

name

Name of the schema that this table is in

relname

name

Name of the table

seq_scan

bigint

Number of sequential scans initiated on this table

seq_tup_read

bigint

Number of live rows fetched by sequential scans

idx_scan

bigint

Number of index scans initiated on this 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 (that is, 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 at which this table was manually vacuumed (not counting VACUUM FULL)

last_autovacuum

timestamp with time zone

Last time at which this table was vacuumed by the autovacuum daemon

last_analyze

timestamp with time zone

Last time at which this table was manually analyzed

last_autoanalyze

timestamp with time zone

Last time at which this table was analyzed by the autovacuum daemon

vacuum_count

bigint

Number of times this table has been manually vacuumed (not counting VACUUM FULL)

autovacuum_count

bigint

Number of times this table has been vacuumed by the autovacuum daemon

analyze_count

bigint

Number of times this table has been manually analyzed

autoanalyze_count

bigint

Number of times this table has been analyzed by the autovacuum daemon