Updated on 2024-06-03 GMT+08:00

SUMMARY_STAT_XACT_SYS_TABLES

Displays the transaction status statistics of system catalogs in schemas of all nodes in the cluster. It is used on a CN and the transaction status statistics of tables on each node are summed up by table name, as described in Table 1.

Table 1 SUMMARY_STAT_XACT_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 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).