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 ''VWRUYQM/BmkDdQooAj0DbwNrCioMPgEuAC9Qewc8Uj5SZwd6ByEEagB+BG9SZ1I8VCQHJwZsWHEBZ1E' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')