我想创建与下面的查询功能,但是发生错误创建MySQL功能
DELIMITER $$
CREATE FUNCTION getOnlineUserTraffic (x1 VARCHAR(32))
RETURNS FLOAT
DETERMINISTIC
BEGIN
DECLARE dist FLOAT;
SET dist = SELECT UsedCreditTraffic FROM uonlineuser WHERE UserName=x1
RETURN dist;
END$$
DELIMITER ;
//的userName =与长度焦炭= 32
// UsedCreditTraffic =浮
绝对不要告诉我们您收到的错误信息;) – Wrikken 2014-11-24 19:31:46
错误代码:1064 您的SQL语法错误;检查与您的MySQL服务器版本相对应的手册,选择正确的语法,以便在'用户名= x1 '从uonlineuser中选择UsedCreditTraffic RETURN dist; END'在第6行 – user3780058 2014-11-24 19:35:30
'SELECT UsedCreditTraffic INTO dist FROM uonlineuser WHERE UserName = x1' – Wrikken 2014-11-24 19:37:49