Show NODATA problems in UI

problem.go

@@ -25,9 +25,9 @@ func ProblemsRetrieve() (problems []Problem, err error) {
 	problems = []Problem{}
 	row := service.Db.Conn.QueryRow(`
 		SELECT
-			jsonb_agg(p.*)
+			jsonb_agg(problems.*)
 		FROM (
-			SELECT
+			(SELECT
 				p.id,
 				p.start,
 				p.end,
@@ -40,12 +40,31 @@ func ProblemsRetrieve() (problems []Problem, err error) {
 			INNER JOIN "trigger" t ON p.trigger_id = t.id
 			INNER JOIN section s ON t.section_id = s.id
 			INNER JOIN area a ON s.area_id = a.id
-			
 			WHERE
 				p.end IS NULL
+			ORDER BY
+				p.start DESC)
+
+			UNION ALL
 			
-			ORDER BY p.start DESC
-		)  p
+			(SELECT
+				-1 AS id,
+				null,
+				null,
+				false,
+				-1 AS trigger_id,
+				CONCAT(
+					'NODATA: ',
+					dp.name
+				) AS trigger_name,
+				'[NODATA]' AS area_name,
+				'[NODATA]' AS section_name
+			FROM datapoint dp
+			WHERE
+				dp.nodata_is_problem
+			ORDER BY
+				dp.name ASC)
+		) AS problems
 	`)
 
 	var jsonBody []byte