Updated on 2024-08-20 GMT+08:00

SUMMARY_STAT_USER_TABLES

Displays the sum of the status information about user-defined ordinary tables in all schemas of a cluster. It is used on the CN. The status information about user-defined ordinary tables on each DN is summed up. The timestamp column is not summed up and only the latest value of this column on all nodes is used, as described in Table 1.

Table 1 SUMMARY_STAT_USER_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 the 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 HOT updated rows (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 (excluding 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 the 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 this table is manually vacuumed (excluding VACUUM FULL).

autovacuum_count

numeric

Number of times this 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.