Listing all GIST indexes in a Postgis database.

GISTIndexCheck

SELECT i.relname as indexname,
       idx.indrelid::regclass as tablename,
       am.amname as typename,
       ARRAY(
       SELECT pg_get_indexdef(idx.indexrelid, k + 1, true)
       FROM generate_subscripts(idx.indkey, 1) as k
       ORDER BY k
       ) as indkey_names
FROM   pg_index as idx
JOIN   pg_class as i
ON     i.oid = idx.indexrelid
JOIN   pg_am as am
ON     i.relam = am.oid
JOIN   pg_namespace as ns
ON     ns.oid = i.relnamespace
AND    ns.nspname = ANY(current_schemas(false))
Where am.amname Like 'gist';