diff --git a/app/controllers/calculation.controller.js b/app/controllers/calculation.controller.js
index 2da2369..6ae96fe 100644
--- a/app/controllers/calculation.controller.js
+++ b/app/controllers/calculation.controller.js
@@ -21,3 +21,62 @@ const { getQuarterPeriods } = require("../services/quarterService");
 const { sanitizeForLog } = require("../utils/sanitize");
 const logger = require("../services/logger");
 
+
+// SELECT
+//     p.id AS product_id,
+//     p.hs_code AS product_hs_code,
+//     s.year,
+//     u.uom_short_name AS unit,
+
+//     -- Q1
+//     SUM(CASE WHEN s.quarter = 'Q1' THEN sp.current_quantity_period_one END)  AS Jan,
+//     SUM(CASE WHEN s.quarter = 'Q1' THEN sp.current_quantity_period_two END)  AS Feb,
+//     SUM(CASE WHEN s.quarter = 'Q1' THEN sp.current_quantity_period_three END)AS Mar,
+
+//     -- Q2
+//     SUM(CASE WHEN s.quarter = 'Q2' THEN sp.current_quantity_period_one END)  AS Apr,
+//     SUM(CASE WHEN s.quarter = 'Q2' THEN sp.current_quantity_period_two END)  AS May,
+//     SUM(CASE WHEN s.quarter = 'Q2' THEN sp.current_quantity_period_three END)AS Jun,
+
+//     -- Q3
+//     SUM(CASE WHEN s.quarter = 'Q3' THEN sp.current_quantity_period_one END)  AS Jul,
+//     SUM(CASE WHEN s.quarter = 'Q3' THEN sp.current_quantity_period_two END)  AS Aug,
+//     SUM(CASE WHEN s.quarter = 'Q3' THEN sp.current_quantity_period_three END)AS Sep,
+
+//     -- Q4
+//     SUM(CASE WHEN s.quarter = 'Q4' THEN sp.current_quantity_period_one END)  AS Oct,
+//     SUM(CASE WHEN s.quarter = 'Q4' THEN sp.current_quantity_period_two END)  AS Nov,
+//     SUM(CASE WHEN s.quarter = 'Q4' THEN sp.current_quantity_period_three END)AS `Dec`,
+
+//     -- Average (A.M.) Base Year Production
+//     ROUND(
+//         (
+//             COALESCE(SUM(CASE WHEN s.quarter='Q1' THEN sp.current_quantity_period_one END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q1' THEN sp.current_quantity_period_two END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q1' THEN sp.current_quantity_period_three END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q2' THEN sp.current_quantity_period_one END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q2' THEN sp.current_quantity_period_two END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q2' THEN sp.current_quantity_period_three END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q3' THEN sp.current_quantity_period_one END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q3' THEN sp.current_quantity_period_two END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q3' THEN sp.current_quantity_period_three END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q4' THEN sp.current_quantity_period_one END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q4' THEN sp.current_quantity_period_two END),0) +
+//             COALESCE(SUM(CASE WHEN s.quarter='Q4' THEN sp.current_quantity_period_three END),0)
+//         ) / 12,
+//     2) AS avg_by_production
+
+// FROM submission_products sp
+// JOIN submission s       ON s.id = sp.submission_id
+// JOIN products p         ON p.id = sp.product_id
+// LEFT JOIN unit_master u       ON u.id = p.unit_id   -- if you have units table
+
+// WHERE
+//     s.year = 2022                 -- base year
+//     AND sp.is_active = 1
+//     AND s.status = 'Approved'     -- optional, recommended
+
+// GROUP BY
+//     p.id;
+
+