MariaDB程序phpmyadmin错误

Question

在PHPmyadmin sql框中创建存储过程时出现以下错误：

1064年的今天，您的SQL语法出现错误；请查看与您的MariaDB服务器版本对应的手册，以了解第1行“BEGIN DECLARE ref_id varchar（10）”附近使用的正确语法

CREATE PROCEDURE get_tree(IN id varchar)
 BEGIN
 DECLARE ref_id varchar(10);
 DECLARE userid varchar(10);
 SET userid = id;
 SET ref_id='';
 SELECT ref_id into ref_id 
 FROM user WHERE user_id=id ;
 create TEMPORARY  table IF NOT EXISTS temp_table as (select * from user where 1='');
 truncate table temp_table;
 WHILE ref_id <> '' DO
   insert into temp_table select * from user WHERE user_id=userid;
   SET userid = ref_id;
   SET ref_id='';
   SELECT ref_id into ref_id
   FROM user WHERE user_id=userid;
 END WHILE;
 select * from temp_table;
 END

Answer 1

通过添加以下分隔符解决问题：

DELIMITER $$
CREATE PROCEDURE get_tree(IN id varchar(10)) 
BEGIN
 DECLARE ref_id varchar(10);
 DECLARE userid varchar(10);
 SET userid = id;
 SET ref_id='';
 SELECT ref_id into ref_id 
 FROM user WHERE user_id=id ;
 create TEMPORARY  table IF NOT EXISTS temp_table as (select * from user where 1='');
 truncate table temp_table;
 WHILE ref_id <> '' DO
   insert into temp_table select * from user WHERE user_id=userid;
   SET userid = ref_id;
   SET ref_id='';
   SELECT ref_id into ref_id
   FROM user WHERE user_id=userid;
 END WHILE;
 select * from temp_table;


END$$
DELIMITER ;

Answer 2

问题在于过程参数——如果没有长度，就不能使用varchar。应该是的

CREATE PROCEDURE get_tree(IN id varchar(10))
 BEGIN
 ...

（或者你想要的长度，但10似乎是一个合理的选择）。