ݿ: [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

ݿ: [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=

ݿ: [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 ''V2YGMwY6BmlSJAspAT4FaVQ8BiZTYVxzAC9TeAQ/Am4FMFIvVHIBbwxyVzwBNAJsVCRVdQVvAShYPl4' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')