PG_STAT_SYS_INDEXES

PG_STAT_SYS_INDEXES displays index status information about all the system catalogs in the pg_catalog and information_schema schemas.

Table 1 PG_STAT_SYS_INDEXES columns

Name	Type	Description
relid	oid	OID of the table for this index
indexrelid	oid	OID of the index
schemaname	name	Name of the schema that the index is in
relname	name	Name of the table for the index
indexrelname	name	Index name
idx_scan	bigint	Number of index scans initiated on the index
last_idx_scan	timestamptz	The time of the last scan on this index, based on the most recent transaction stop time
idx_tup_read	bigint	Number of index entries returned by scans on the index
idx_tup_fetch	bigint	Number of live table rows fetched by simple index scans using the index