More recipes page performance optimizations (references #1750)

migrations/0158.sql

@@ -0,0 +1,28 @@
+CREATE VIEW recipes_missing_product_counts
+AS
+SELECT
+	recipe_id,
+	COUNT(*) AS missing_products_count
+FROM recipes_pos_resolved
+WHERE need_fulfilled = 0
+GROUP BY recipe_id;
+
+DROP VIEW recipes_resolved;
+CREATE VIEW recipes_resolved
+AS
+SELECT
+	1 AS id, -- Dummy, LessQL needs an id column
+	r.id AS recipe_id,
+	IFNULL(MIN(rpr.need_fulfilled), 1) AS need_fulfilled,
+	IFNULL(MIN(rpr.need_fulfilled_with_shopping_list), 1) AS need_fulfilled_with_shopping_list,
+	IFNULL(rmpc.missing_products_count, 0) AS missing_products_count,
+	IFNULL(SUM(rpr.costs), 0) AS costs,
+	IFNULL(SUM(rpr.calories), 0) AS calories
+FROM recipes r
+LEFT JOIN recipes_pos_resolved rpr
+	ON r.id = rpr.recipe_id
+LEFT JOIN recipes_missing_product_counts rmpc
+	ON r.id = rmpc.recipe_id
+GROUP BY r.id;
+
+DROP VIEW recipes_resolved2;