pg_statio_sys_tables
pg_statio_sys_tables
is a statistics view showing IO statistics for each system table in the current database.
pg_statio_sys_tables
was added in PostgreSQL 7.2.
Definition by PostgreSQL version
pg_statio_sys_tables (PostgreSQL 15)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Collation | Nullable | Default -----------------+--------+-----------+----------+--------- relid | oid | | | schemaname | name | | | relname | name | | | heap_blks_read | bigint | | | heap_blks_hit | bigint | | | idx_blks_read | bigint | | | idx_blks_hit | bigint | | | toast_blks_read | bigint | | | toast_blks_hit | bigint | | | tidx_blks_read | bigint | | | tidx_blks_hit | bigint | | |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 14)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Collation | Nullable | Default -----------------+--------+-----------+----------+--------- relid | oid | | | schemaname | name | | | relname | name | | | heap_blks_read | bigint | | | heap_blks_hit | bigint | | | idx_blks_read | bigint | | | idx_blks_hit | bigint | | | toast_blks_read | bigint | | | toast_blks_hit | bigint | | | tidx_blks_read | bigint | | | tidx_blks_hit | bigint | | |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 13)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Collation | Nullable | Default -----------------+--------+-----------+----------+--------- relid | oid | | | schemaname | name | | | relname | name | | | heap_blks_read | bigint | | | heap_blks_hit | bigint | | | idx_blks_read | bigint | | | idx_blks_hit | bigint | | | toast_blks_read | bigint | | | toast_blks_hit | bigint | | | tidx_blks_read | bigint | | | tidx_blks_hit | bigint | | |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 12)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Collation | Nullable | Default -----------------+--------+-----------+----------+--------- relid | oid | | | schemaname | name | | | relname | name | | | heap_blks_read | bigint | | | heap_blks_hit | bigint | | | idx_blks_read | bigint | | | idx_blks_hit | bigint | | | toast_blks_read | bigint | | | toast_blks_hit | bigint | | | tidx_blks_read | bigint | | | tidx_blks_hit | bigint | | |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 11)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Collation | Nullable | Default -----------------+--------+-----------+----------+--------- relid | oid | | | schemaname | name | | | relname | name | | | heap_blks_read | bigint | | | heap_blks_hit | bigint | | | idx_blks_read | bigint | | | idx_blks_hit | bigint | | | toast_blks_read | bigint | | | toast_blks_hit | bigint | | | tidx_blks_read | bigint | | | tidx_blks_hit | bigint | | |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 10)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Collation | Nullable | Default -----------------+--------+-----------+----------+--------- relid | oid | | | schemaname | name | | | relname | name | | | heap_blks_read | bigint | | | heap_blks_hit | bigint | | | idx_blks_read | bigint | | | idx_blks_hit | bigint | | | toast_blks_read | bigint | | | toast_blks_hit | bigint | | | tidx_blks_read | bigint | | | tidx_blks_hit | bigint | | |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 9.6)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 9.5)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 9.4)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 9.3)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 9.2)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 9.1)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 9.0)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint |
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 8.4)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint | View definition: SELECT pg_statio_all_tables.relid, pg_statio_all_tables.schemaname, pg_statio_all_tables.relname, pg_statio_all_tables.heap_blks_read, pg_statio_all_tables.heap_blks_hit, pg_statio_all_tables.idx_blks_read, pg_statio_all_tables.idx_blks_hit, pg_statio_all_tables.toast_blks_read, pg_statio_all_tables.toast_blks_hit, pg_statio_all_tables.tidx_blks_read, pg_statio_all_tables.tidx_blks_hit FROM pg_statio_all_tables WHERE (pg_statio_all_tables.schemaname = ANY (ARRAY['pg_catalog'::name, 'information_schema'::name])) OR pg_statio_all_tables.schemaname ~ '^pg_toast'::text;
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 8.3)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint | View definition: SELECT pg_statio_all_tables.relid, pg_statio_all_tables.schemaname, pg_statio_all_tables.relname, pg_statio_all_tables.heap_blks_read, pg_statio_all_tables.heap_blks_hit, pg_statio_all_tables.idx_blks_read, pg_statio_all_tables.idx_blks_hit, pg_statio_all_tables.toast_blks_read, pg_statio_all_tables.toast_blks_hit, pg_statio_all_tables.tidx_blks_read, pg_statio_all_tables.tidx_blks_hit FROM pg_statio_all_tables WHERE (pg_statio_all_tables.schemaname = ANY (ARRAY['pg_catalog'::name, 'information_schema'::name])) OR pg_statio_all_tables.schemaname ~ '^pg_toast'::text;
Documentation: pg_statio_sys_tables
pg_statio_sys_tables (PostgreSQL 8.2)
View "pg_catalog.pg_statio_sys_tables" Column | Type | Modifiers -----------------+--------+----------- relid | oid | schemaname | name | relname | name | heap_blks_read | bigint | heap_blks_hit | bigint | idx_blks_read | bigint | idx_blks_hit | bigint | toast_blks_read | bigint | toast_blks_hit | bigint | tidx_blks_read | bigint | tidx_blks_hit | bigint | View definition: SELECT pg_statio_all_tables.relid, pg_statio_all_tables.schemaname, pg_statio_all_tables.relname, pg_statio_all_tables.heap_blks_read, pg_statio_all_tables.heap_blks_hit, pg_statio_all_tables.idx_blks_read, pg_statio_all_tables.idx_blks_hit, pg_statio_all_tables.toast_blks_read, pg_statio_all_tables.toast_blks_hit, pg_statio_all_tables.tidx_blks_read, pg_statio_all_tables.tidx_blks_hit FROM pg_statio_all_tables WHERE pg_statio_all_tables.schemaname = ANY (ARRAY['pg_catalog'::name, 'pg_toast'::name, 'information_schema'::name]);
Documentation: pg_statio_sys_tables
Change history
- PostgreSQL 7.2
- added (commit 8d80b0d9)
Examples
Sample row from pg_statio_sys_tables
:
epp=# SELECT * FROM pg_statio_sys_tables WHERE relname = 'pg_statistic'; -[ RECORD 1 ]---+------------- relid | 2619 schemaname | pg_catalog relname | pg_statistic heap_blks_read | 59233 heap_blks_hit | 1688433915 idx_blks_read | 1190 idx_blks_hit | 244320971 toast_blks_read | 277866 toast_blks_hit | 1495510954 tidx_blks_read | 496 tidx_blks_hit | 32927675
References
- PostgreSQL documentation: pg_statio_sys_tables