1 files changed, 41 insertions, 0 deletions
diff --git a/data/sql/views.sql b/data/sql/views.sql
new file mode 100644
index 0000000..94cbabd
--- /dev/null
+++ b/data/sql/views.sql
@@ -0,0 +1,41 @@
+BEGIN TRANSACTION;
+CREATE VIEW IF NOT EXISTS stock AS SELECT id, name, category, amount FROM products WHERE deprecated = 0 OR amount != 0;
+CREATE VIEW IF NOT EXISTS purchaseprices AS SELECT product, SUM(price * amount) / SUM(amount) AS price FROM restock GROUP BY product;
+CREATE VIEW IF NOT EXISTS invoice AS 
+	SELECT user, timestamp, id AS productid, name AS productname,
+		CASE
+			WHEN user < 0 THEN
+				(SELECT SUM(price * amount) / SUM(amount)
+					FROM restock
+					WHERE restock.product = id AND restock.timestamp <= sales.timestamp
+				)
+			else
+				(SELECT
+					CASE
+						WHEN user=0 THEN guestprice
+						else memberprice
+					END
+					FROM prices
+					WHERE product = id AND valid_from <= timestamp
+					ORDER BY valid_from DESC LIMIT 1)
+			END AS price
+		FROM sales INNER JOIN products ON sales.product = products.id
+		ORDER BY timestamp;
+CREATE VIEW IF NOT EXISTS current_cashbox_status AS
+	SELECT (
+		(
+			SELECT SUM(
+				(
+					SELECT guestprice
+						FROM prices
+						WHERE product = s.product AND valid_from <= s.timestamp
+						ORDER BY valid_from DESC LIMIT 1
+				)
+			) FROM sales s WHERE user = 0
+		)
+		+
+		(
+			SELECT SUM(amount) FROM cashbox_diff
+		)
+	) AS amount;
+COMMIT;