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 ''UGEBNAc7Am0MelZ0VWoFaVI6AyMGNFh3WHdTeFBrVztXYlQpBiAAbgV7B2xTZgVrUiIAIFM5CyJbPVI' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')