操作数应包含 1 列存储过程 [英] Operand should contain 1 column(s) stored procedure
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问题描述
我试图在一个过程中使用多选来分配变量的值.但我收到这样的错误操作数应该包含 1 列"这是我的代码:
I was trying use multiple select at one procedure to assign the value of variable. but i got error like this "Operand should contain 1 column(s)" this is my code :
DELIMITER $$
DROP PROCEDURE IF EXISTS `bankdb`.`charge` $$
CREATE PROCEDURE `bankdb`.`charge` ()
BEGIN
DECLARE idcust_val INT;
DECLARE balance_val FLOAT;
DECLARE balance_val1 FLOAT;
DECLARE balance_val2 FLOAT;
DECLARE productCd_val VARCHAR(10);
DECLARE productType_val VARCHAR(10);
DECLARE no_more_rows INT DEFAULT 0;
DECLARE num_rows INT DEFAULT 0;
DECLARE col_cur CURSOR FOR
select a.cust_id, a.avail_balance, a.product_cd, p.product_type_cd
from account a, product p
where a.product_cd = p.product_cd;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET no_more_rows = 1;
OPEN col_cur;
select FOUND_ROWS() into num_rows;
read_loop: LOOP
IF no_more_rows THEN
CLOSE col_cur;
LEAVE read_loop;
END IF;
FETCH col_cur INTO idcust_val, balance_val, productCd_val, productType_val;
SELECT idcust_val, balance_val, productCd_val;
IF productType_val = 'ACCOUNT' THEN
IF productCd_val = 'SAV' || productCd_val = 'CD' THEN
IF balance_val < 2000 THEN
SELECT (balance_val-10) INTO balance_val;
END IF;
ELSE
SELECT (balance_val+(balance_val*0,05)) INTO balance_val;
END IF;
ELSE
SELECT (balance_val-(balance_val*0,1)) INTO balance_val;
END IF;
/*UPDATE account SET avail_balance = balance_val WHERE account_id = idcust_val;*/
END LOOP read_loop;
END $$
DELIMITER ;
请帮忙!
推荐答案
将小数点 ',' 更改为 '.'
Change decimal point ',' to '.'
0,05 -> 0.05
0,1 - 0.1
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