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我写过一个存储过程。 shipmentnumbers和cartonid都应返回逗号分隔值。出货编号即将到来,即逗号分隔值,但cartonid总是只返回一个值,即使有多行。我如何解决这个问题。存储过程中无法识别的GROUP_CONCAT值
DELIMITER $$
CREATE PROCEDURE `sp_deleteOrderData`(orderid BIGINT(11))
BEGIN
DECLARE shipmentnumbers VARCHAR(1000);
DECLARE cartonid VARCHAR(1000);
SELECT GROUP_CONCAT(a_shipmentid) FROM t_shipment WHERE a_orderid = orderid INTO shipmentnumbers;
SELECT GROUP_CONCAT(a_cartonid) FROM t_carton WHERE a_shipmentid IN (shipmentnumbers) INTO cartonid;
SELECT shipmentnumbers;
/*SELECT cartonid; */
END$$
DELIMITER ;