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 ''U2JVYAA8VzgGcAUnUW5XOwJqV3cENgkmXXJRegoxAW1QZQR5ACYOYAJ8UjlTZlY4VycDI1A6ASgIblc' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')