我尝试了一些,但我找不到解决方案,不知何故我设法得到了这个结果。
这是查询:
DELIMITER ##
CREATE PROCEDURE test1(start_date DATE,end_date DATE)
BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE a INT;
DECLARE present INT;
DECLARE total INT;
-- Declare the cursor
DECLARE id CURSOR
FOR
SELECT staff_id FROM ost_staff;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
-- Open the cursor
DROP TEMPORARY TABLE IF EXISTS reports;
CREATE TEMPORARY TABLE IF NOT EXISTS reports
(
staff_id INT(10),
present INT(10),
total INT(10)
);
OPEN id;
read_loop: LOOP
FETCH id INTO a;
IF done THEN
LEAVE read_loop;
END IF;
INSERT INTO reports(staff_id,present,total)
SELECT (COUNT(I.interval_start)) AS present, DATEDIFF(DATE_ADD(end_date,INTERVAL 1 DAY),start_date) AS total
FROM effort_frequency E
RIGHT OUTER JOIN time_intervals I ON I.interval_start = E.log_date
AND E.staffid=a AND E.log_date BETWEEN start_date AND end_date
LEFT OUTER JOIN ost_holidays H ON H.holiday_date = I.interval_start
WHERE DATE_FORMAT(I.interval_start,'%a') = 'Sun' OR H.holiday_date = I.interval_start OR E.total_effortspent IS NOT NULL;
-- Close the cursor
END LOOP;
CLOSE id;
END ##
我得到以下结果:
+----------+-----------------+
| staff_id | present | total |
+----------+---------+-------+
| (NULL) | 23 | 24 |
| (NULL) | 22 | 24 |
+----------+---------+-------+
我正在为 staff_id 获取(NULL),我怎样才能获得 staff_id?我尝试在插入语句中使用声明的变量'a',但当时我只得到了staff_id,我没有得到其他2个字段,我无法从select inside insert语句中获取staff_id,因为有一些问题。
现在我需要将变量'a'中的staff_id插入到该临时表中。
注意:我对这个存储过程真的很陌生,但不知何故管理到这里,如果我能得到一些关于如何在插入中使用 Select 的详细信息,包括解决方案,那就太好了。