core-jgi/db/postgresql/functions/prodqtyordered.sql

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CREATE OR REPLACE FUNCTION prodqtyordered(p_product_id numeric, p_warehouse_id numeric)
RETURNS numeric AS
$BODY$
DECLARE
v_Warehouse_ID numeric;
v_Quantity numeric := 99999; -- unlimited
v_IsBOM CHAR(1);
v_IsStocked CHAR(1);
v_ProductType CHAR(1);
v_ProductQty numeric;
v_StdPrecision int;
BEGIN
-- Check Parameters
v_Warehouse_ID := p_Warehouse_ID;
IF (v_Warehouse_ID IS NULL) THEN
RETURN 0;
END IF;
-- DBMS_OUTPUT.PUT_LINE('Warehouse=' || v_Warehouse_ID);
-- Check, if product exists and if it is stocked
BEGIN
SELECT IsBOM, ProductType, IsStocked
INTO v_IsBOM, v_ProductType, v_IsStocked
FROM M_PRODUCT
WHERE M_Product_ID=p_Product_ID;
--
EXCEPTION -- not found
WHEN OTHERS THEN
RETURN 0;
END;
-- No reservation for non-stocked
IF (v_IsStocked='Y') THEN
-- Get ProductQty
SELECT COALESCE(SUM(MovementQty), 0)
INTO v_ProductQty
FROM M_ProductionLine p
WHERE M_Product_ID=p_Product_ID AND MovementQty > 0 AND p.Processed = 'N'
AND EXISTS (SELECT * FROM M_LOCATOR l WHERE p.M_Locator_ID=l.M_Locator_ID
AND l.M_Warehouse_ID=v_Warehouse_ID);
--
RETURN v_ProductQty;
END IF;
-- Unlimited (e.g. only services)
IF (v_Quantity = 99999) THEN
RETURN 0;
END IF;
IF (v_Quantity > 0) THEN
-- Get Rounding Precision for Product
SELECT COALESCE(MAX(u.StdPrecision), 0)
INTO v_StdPrecision
FROM C_UOM u, M_PRODUCT p
WHERE u.C_UOM_ID=p.C_UOM_ID AND p.M_Product_ID=p_Product_ID;
--
RETURN ROUND (v_Quantity, v_StdPrecision);
END IF;
RETURN 0;
END;
$BODY$
LANGUAGE plpgsql STABLE
;