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 ''UGFSZw8zDmEGcAooBDsDbwVtBydTYQskCyRRegoxVjoFMAZ7UnQGaAd5CmECNwBuAnIHJwxmCiNYPlU' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')