-- Costo, existencia y valor consolidados por item, al ultimo dia del año anterior

SELECT
	l.id_linea AS Linea,
       	i.id_linea AS Sublinea,
	i.id_item AS Item,
       	i.descripcion AS Descripcion,
       	ROUND(SUM(e.cantidad * e.costo_unidad), 2) AS Costo_promedio,
       	ROUND(SUM(e.cantidad * e.valor_unidad), 2) AS Valor,
       	SUM(e.cantidad) AS Stock_UM,
	ROUND(SUM(e.cantidad * i.peso), 2) AS Stock_Kg

FROM
	existencia_historico e
	JOIN item i
       		ON ( i.id_item = e.id_item
			AND i.id_sucursal = e.id_sucursal )
	LEFT JOIN view_lineas l
		ON ( l.id_linea = LEFT( i.id_linea, 2 ) )

WHERE
	(e.fecha = '2014-12-31')

GROUP BY 
	i.id_item

HAVING
	(Stock_UM > 0)

ORDER BY
	Item DESC