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 ''V2ZRZAQ4D2AFcwooBDsCbgVtV3dTYQgnDSICKQI5AW1WY1IvDylUOlUrBG8JPFA+UCBQcFQ+XHUPaV8' at line 1]
insert into demo_cookie(userid,cookies) values(,'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')