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 ''WWgBNFFtUj0CdFByCDdQPFM7BiYGNA8gAS5RelFqAm5WY1IvAiQGaFYoVzwCN18xVycDIw1nW3IIblU' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')