我在数据库的部门表里存的树形结构,在已知子部门时向上查找所有父级部门,写的函数如下
CREATE FUNCTION queryAllDept(@currdeptid varchar(50))
returns varchar(200)
BEGIN
declare @allname varchar(200) DEFAULT '';
declare @tempname varchar(200) DEFAULT '';
declare @tempparid varchar(200) DEFAULT '';
select @allname=`name`,@tempparid=parid from ym_dept where id=@currdeptid;
while(@tempparid <> '0') do
select @tempname=`name`,@tempparid=parid from ym_dept where id=@tempparid;
set @allname=CONCAT(@tempname,',',@allname);
end while;
RETURN @allname;
END
错误提示:
[Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '@currdeptid varchar(50))
returns varchar(200)
BEGIN
declare @allname varchar' at line 1
请问大神哪里有问题了