Handle edited stock entries in GetProductPriceHistory (fixes #913)

migrations/0110.sql

@@ -0,0 +1,22 @@
+CREATE VIEW product_price_history
+AS
+SELECT
+	sl.product_id AS id, -- Dummy, LessQL needs an id column
+	sl.product_id,
+	sl.price,
+	sl.purchased_date,
+	sl.shopping_location_id
+FROM stock_log sl
+WHERE sl.transaction_type IN ('purchase', 'inventory-correction', 'stock-edit-new')
+	AND sl.undone = 0
+	AND sl.price IS NOT NULL
+	AND sl.id NOT IN (
+			-- These are edited purchase and inventory-correction rows
+			SELECT sl_origin.id
+			FROM stock_log sl_origin
+			JOIN stock_log sl_edit
+				ON sl_origin.stock_id = sl_edit.stock_id
+				AND sl_edit.transaction_type = 'stock-edit-new'
+				AND sl_edit.id > sl_origin.id
+			WHERE sl_origin.transaction_type IN ('purchase', 'inventory-correction')
+		);