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我在MySQL中有2個存儲過程。我想打電話從另一個但我需要一些幫助，語法MySql嵌套存儲過程調用
下面是步驟1 FindPreviousDate
DELIMITER $$ CREATE PROCEDURE `FindPreviousDate`(IN eventdate DATETIME, IN lookbackDays INT, IN symbol VARCHAR(20))
BEGIN
SELECT *
FROM Price a
WHERE a.eventDate between (eventDate - interval lookbackDays day) and (eventdate - interval 1 day) and a.symbol = symbol
ORDER BY a.eventDate DESC
LIMIT 1;
END
下面是步驟2 FindCloseEvent
CREATE PROCEDURE `FindCloseEvent`(IN startdate DATETIME, IN enddate DATETIME,IN symbol VARCHAR(20), IN cutoff DOUBLE)
BEGIN
SELECT *
FROM Price a
WHERE a.eventDate between startdate and enddate and
(SELECT COUNT(*) from Price b where b.eventDate = a.eventDate and b.closePrice < cutoff and a.symbol = b.symbol and
(SELECT COUNT(*) from Price c where c.eventDate = (b.eventDate - interval 1 day) and c.closePrice >= cutoff and b.symbol = c.symbol));
END
我想將這段代碼在程序2中使用程序1的結果
(b.eventDate - interval 1 day)
我需要獲取幫助語法正確。我甚至不確定mySql是否允許我所要求的。
謝謝！