mysql - $$ DELIMITER

Question

DELIMITER $$
DROP PROCEDURE IF EXISTS ProcUpdateAccessType $$
CREATE PROCEDURE ProcUpdateAccessType (in aMemberId int, in aNodeCode varchar(20), in aAccessType tinyint, out ret tinyint)
BEGIN

declare varAccessType int default -1;
set ret = 0;
set @varNodeCode=if(trim(aNodeCode)= '',NULL,aNodeCode);
IF (@varNodeCode is null)THEN 
    update T_Member set access_type=aAccessType where member_id=aMemberId;
ELSE
    select access_type into varAccessType from T_Member where member_id=aMemberId;
    IF (varAccessType = 0) THEN
        IF (varAccessType != aAccessType) THEN
            IF EXISTS (select * from T_AccessType_Attr where member_id=aMemberId and node_code=aNodeCode) THEN
                update T_AccessType_Attr set access_type=aAccessType where member_id=aMemberId and node_code=aNodeCode;
            ELSE
                insert into T_AccessType_Attr (member_id, node_code, access_type) values (aMemberId, aNodeCode, aAccessType);
            END IF;
        ELSE 
            delete from T_AccessType_Attr where member_id=aMemberId and node_code=aNodeCode;
        END IF;
    ELSE
        set ret = -8;
    END IF;

END IF;
END $$
DELIMITER ;

错误提示如下：求指导
[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 '$$
DELIMITER' at line 24

经过测试，是因为set @varNodeCode=if(trim(aNodeCode)= '',NULL,aNodeCode);这一句后面的if（）语句导致运行不下去，求大神解答

Answer 1

corresponds to your MySQL server version for the right syntax to use near '$$'

你最后那几行写错了

改成

END IF;
END;
$$
DELIMITER ;