fixed bug in task exclusion

Author: ajefts

queries/get_open_challenges_count

@@ -5,7 +5,6 @@ FROM project p
 , project_info pn
 , project_category_lu pcl
 , project_info pi1
-, OUTER project_info pi82
 WHERE 1=1
 AND p.project_id = pn.project_id
 AND pn.project_info_type_id = 6
@@ -33,6 +32,4 @@ AND pn.value LIKE ('@challenge_name@')
 AND NVL((SELECT pr.prize_amount FROM prize pr WHERE pr.project_id = p.project_id AND pr.prize_type_id = 15 AND pr.place = 1), 0) >= @prize_lower_bound@
 AND NVL((SELECT pr.prize_amount FROM prize pr WHERE pr.project_id = p.project_id AND pr.prize_type_id = 15 AND pr.place = 1), 0) <= @prize_upper_bound@
 AND p.tc_direct_project_id = DECODE(@project_id@, 0, p.tc_direct_project_id, @project_id@)
-AND NOT (   NVL(pi82.value,0) = 1 
-        AND (select count(*) from resource r where r.project_id = p.project_id and resource_role_id = 1 ) > 0
-    ) 
+AND not exists (select 1 from resource r, project_info pi82 where r.project_id = p.project_id and r.resource_role_id = 1 and p.project_id = pi82.project_id and project_info_type_id = 82 and pi82.value = 1) -- exclude assigned tasks