Privileges to use base table columns

SELECT cp.grantee, cp.table_schema, cp.table_name, cp.column_name, array_agg(cp.privilege_type::TEXT ORDER BY cp.privilege_type) AS privileges, Count(*) AS number_of_privileges
FROM information_schema.column_privileges AS cp INNER JOIN information_schema.tables AS t
ON t.table_schema=cp.table_schema AND t.table_name=cp.table_name
WHERE t.table_type='BASE TABLE' AND cp.table_schema <>ALL  (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND grantee <> ALL (SELECT tableowner
FROM pg_catalog.pg_tables AS pt
WHERE pt.schemaname=cp.table_schema AND pt.tablename=cp.table_name)
GROUP BY cp.grantee, cp.table_schema, cp.table_name, cp.column_name
ORDER BY Count(*) DESC, cp.grantee, cp.table_schema, cp.table_name;