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 ''UGEHMgY6BWpXIQspUm1fMw9nVnYDMQkmCiVedQE6BWkANVMuBiAEagd5Vj1RZARqAnJRcQdtDicPaVA' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')