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 ''U2IHMgY6Uj0BdwclBjlfMw9nASECMAskDyBVfgc8BmpVYAB9BiBVO1IsVj1RZFA+VCQDI1E7X3YJbwd' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')