49 lines
1.5 KiB
MySQL
49 lines
1.5 KiB
MySQL
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DELIMITER $$
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CREATE OR REPLACE DEFINER=`root`@`localhost` PROCEDURE `vn`.`item_getAtp`(vDated DATE)
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BEGIN
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/**
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* Calcula el valor mínimo acumulado para cada artículo ordenado por fecha y
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* almacén.
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*
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* @param vDated Si no hay movimientos en la fecha indicada, debe devolver 0
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* @table tmp.itemCalc(itemFk, wareHouseFk, dated, quantity)
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* @return tmp.itemAtp(itemFk, warehouseFk, quantity)
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*/
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CREATE OR REPLACE TEMPORARY TABLE tItemOrdered
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(UNIQUE(itemFk, warehouseFk, dated))
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ENGINE = MEMORY
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SELECT itemFk, warehouseFk, dated, SUM(quantity) quantity
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FROM (
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SELECT itemFk, warehouseFk, dated, quantity
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FROM tmp.itemCalc
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UNION ALL
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SELECT itemFk, warehouseFk, vDated, 0
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FROM (SELECT DISTINCT itemFk, warehouseFk FROM tmp.itemCalc) t2
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) t1
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GROUP BY itemFk, warehouseFk, dated
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ORDER BY itemFk, warehouseFk, dated;
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SET @lastItemFk := 0;
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SET @lastWareHouseFk := 0;
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SET @lastQuantity := 0;
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CREATE OR REPLACE TEMPORARY TABLE tmp.itemAtp
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(INDEX (itemFk, wareHouseFk))
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SELECT itemFk, wareHouseFk, MIN(quantityAccumulated) quantity
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FROM (
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SELECT
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itemFk,
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IF(itemFk <> @lastItemFk OR wareHouseFk <> @lastWareHouseFk,
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@lastQuantity := quantity,
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@lastQuantity := @lastQuantity + quantity) quantityAccumulated,
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wareHouseFk,
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@lastItemFk := itemFk,
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@lastWareHouseFk := wareHouseFk
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FROM tItemOrdered
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)sub
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GROUP BY itemFk, wareHouseFk;
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DROP TEMPORARY TABLE tItemOrdered;
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END$$
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DELIMITER ;
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