get_permission.sql

 1-- get_permission.sql
 2SELECT permissions FROM abac
 3WHERE
 4	resource_type=?
 5AND
 6	(resource_id=? OR resource_id IS NULL)
 7AND
 8	(user_id=? OR user_id IS NULL)
 9ORDER BY
10	user_id NULLS LAST,
11	resource_id NULLS LAST,
12    permissions DESC
13LIMIT 1;
14