PG_STATIO_ALL_TABLES

PG_STATIO_ALL_TABLES contains one row for each table in the current database (including TOAST tables), showing I/O statistics about accesses to that specific table.

**Table 1** PG_STATIO_ALL_TABLES columns
Name	Type	Description
relid	oid	Table OID
schemaname	name	Schema name of the table
relname	name	Table name
heap_blks_read	bigint	Number of disk blocks read from this table
heap_blks_hit	bigint	Number of buffer hits in this table
idx_blks_read	bigint	Number of disk blocks read from the index in this table
idx_blks_hit	bigint	Number of buffer hits in all indexes on this table
toast_blks_read	bigint	Number of disk blocks read from the TOAST table (if any) in this table
toast_blks_hit	bigint	Number of buffer hits in the TOAST table (if any) in this table
tidx_blks_read	bigint	Number of disk blocks read from the TOAST table index (if any) in this table
tidx_blks_hit	bigint	Number of buffer hits in the TOAST table index (if any) in this table