TimescaleDB index stats

index_stats.sql

SELECT
    p.parent,
    con.consrc as chunk_constraint,
    t.tablename,
    indexname,
    c.reltuples AS num_rows,
    pg_size_pretty(pg_relation_size(quote_ident(t.schemaname)::text || '.' || quote_ident(t.tablename)::text)) AS table_size,
    pg_size_pretty(pg_relation_size(quote_ident(t.schemaname)::text || '.' || quote_ident(indexrelname)::text)) AS index_size,
    CASE WHEN indisunique THEN 'Y'
       ELSE 'N'
    END AS UNIQUE,
    idx_scan AS number_of_scans,
    idx_tup_read AS tuples_read,
    idx_tup_fetch AS tuples_fetched
FROM pg_tables t
LEFT OUTER JOIN pg_class c ON t.tablename=c.relname
LEFT OUTER JOIN
    ( SELECT c.relname AS ctablename, ipg.relname AS indexname, x.indnatts AS number_of_columns, idx_scan, idx_tup_read, idx_tup_fetch, indexrelname, indisunique, c.oid as tbloid FROM pg_index x
           JOIN pg_class c ON c.oid = x.indrelid
           JOIN pg_class ipg ON ipg.oid = x.indexrelid
           JOIN pg_stat_all_indexes psai ON x.indexrelid = psai.indexrelid )
    AS foo
    ON t.tablename = foo.ctablename
LEFT OUTER JOIN
    ( SELECT c.relname AS child, p.relname AS parent FROM pg_inherits 
        JOIN pg_class AS c ON (inhrelid=c.oid)
        JOIN pg_class as p ON (inhparent=p.oid) )
    AS p
    ON t.tablename = p.child
LEFT OUTER JOIN pg_constraint con ON con.conrelid = tbloid and conname like 'constraint_%'

WHERE t.schemaname in ('public','_timescaledb_internal')
ORDER BY 5 desc;

results.png