Question

mysql中的存储过程能返回数组么

Answer 1

mysql中要获得存储过程的返回值，可以增加一个out参数，用来返回。

mysql中存储过程的例子：

CREATE PROCEDURE addvoucher (

IN userid INT,

IN voucherid INT,

OUT result INT

)

BEGIN

SELECT

@endate_a := endate ,@batch_a := batch ,@c_count_a := c_count,

@isdead_a := isdead

FROM

t_voucher

WHERE

id = voucherid;

SET autocommit = 0;

IF EXISTS (

SELECT

*

FROM

t_user_voucher tuv,

t_voucher tv

WHERE

tv.id = tuv.voucherid

AND tv.batch =@batch_a

) THEN

SET result = 1;-- 已存在

SELECT

result;

ELSE

IF @c_count_a > 0 THEN

IF (

TO_DAYS(@endate_a) - TO_DAYS(NOW())

) > 0 THEN

IF @isdead_a = 1 THEN

INSERT INTO t_user_voucher (userid, voucherid, isdead)

VALUES

(userid, voucherid, 1);

UPDATE t_voucher SET c_count = c_count-1 where id = voucherid;

SET result = 0;-- 成功

END;

下面是调用并返回结果：

Answer 2

没有数组类型