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 ''AjNSZwY6DmEGcFByBDtXOwFpUHBUZgolCCcAKwswB2sDNgd6BCIAbg1zA2gFMFY4AXFVdVQ+DicBZwB' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')