数据库错误: [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 'order by id desc limit 1' at line 1]
select cookies from demo_cookie where userid= order by id desc limit 1

数据库错误: [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 '' at line 1]
delete from demo_cookie where userid=

数据库错误: [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 ''BTQHMgU5AG8DdVV3BzgCbgdvV3dTYQolXHNWfQE6VzsDNgB9UXcAbgB+Bm1TZlE/VycAIAFrASgNa18' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')