INDEX size as bytes - PostgreSQL 9.2

Question

Is there any way to get this query to return the index size as BYTES?

SELECT 
 relid::regclass AS table, 
 indexrelid::regclass AS index,
 pg_size_pretty(pg_relation_size(indexrelid::regclass)) AS index_size, 
 idx_tup_read, 
 idx_tup_fetch, 
 idx_scan
FROM 
 pg_stat_user_indexes 
 JOIN pg_index USING (indexrelid) 
WHERE 
 idx_scan = 0 
 AND indisunique IS FALSE;

Currently it shows BYTES/KB/MB and GB...

Answer 1

Just remove pg_size_pretty from the query:

SELECT 
 relid::regclass AS table, 
 indexrelid::regclass AS index,
 pg_relation_size(indexrelid::regclass) AS index_size,