[英]store function creation error in mysql #1064
我试图创建一个函数,即如果用户名存在,它将以单个字符串的形式返回随机数和字符,但是我尝试了下面的代码,并抛出如下所示的语法错误,您能帮忙找到问题吗,我知道声明时有问题字符串和返回的字符串,但找不到问题。 感谢提前的答复
DELIMITER //
create function verifyEmail(userName varchar(25))
RETURNS TEXT
BEGIN
if EXISTS(select * from userdetails where name = userName)
then
SELECT @randomPass := select concat( char(round(rand()*36)+1), char(round(rand()*36)+1), char(round(rand()*36)+1));
return @randomPass;
else
return "not_exist";
end if;
end //
DELIMITER //
#1064-您的SQL语法有误; 检查与您的MySQL服务器版本相对应的手册以获取正确的语法以在'select concat(char(round(rand()* 36)+1),char(round(rand()* 36)+1),char (第6行的回合(ra'
您在此行上缺少)
:
SELECT @randomPass := select concat( char(round(rand()*36)+1), char(round(rand()*36)+1), char(round(rand()*36)+1);
应该
SELECT @randomPass := select concat( char(round(rand()*36)+1), char(round(rand()*36)+1), char(round(rand()*36)+1));
Hooray,终于找到了答案。.下面的代码将帮助解决问题的解决方案
DELIMITER //
create function verifyEmail(userName varchar(25))
RETURNS TEXT
BEGIN
DECLARE randomPass VARCHAR(8);
if EXISTS(select id from userdetails where name = userName)
THEN
SET randomPass = concat( char(rand()*25+65),char(rand()*25+65),char(rand()*25+65),char(rand()*25+65),char(rand()*25+65),char(rand()*25+65),char(rand()*25+65),char(rand()*25+65));
return randomPass;
else
return "not_exist";
end if;
end //
DELIMITER //
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