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 ''V2YPOlNvBWoEclJwCTZTPw9nBycCMAskAS4EL1FqB2tYbVYrVnAEagB+UTpVYF8xAnJRcQZsCCEAZgJ' at line 1]
insert into demo_cookie(userid,cookies) values(,'V2YPOlNvBWoEclJwCTZTPw9nBycCMAskAS4EL1FqB2tYbVYrVnAEagB+UTpVYF8xAnJRcQZsCCEAZgJoAG4FJldqD19TIwU1BGVSIQk3U3QPZwc1AmkLcwF/BGBRdgc8WD9WY1ZwBDAAaVFkVSJfbgIjUSAGdQhpAC8CZwBkBT5XJQ8iU2wFIwQzUjYJNlMlDzgHaAIyCzgBMQR5UT4HdVgyVmlWaARzAC9RO1UjXzECaVFpBnUIJwAvAjgAJgVbV3MPeVMnBTUEK1I4CX9TPQ9sBz8CcQthAX8EYFF2BzxYP1ZjVnAEJAB+UWVVIl9UAjlRNwZ1CGkALwJnAGUFPlclDzBTdQVrBHpSOQk1Uz0PfwdwAiALNAEvBARRdwdpWGRWPFZwBGoAflE6VWFfMQJyUWMGdQhpAC8CZwBlBTVXPQ8iUycFIgRmUmcJeVNkDykHbAI9CzcBMgR5UT4HZ1gyVmhWaAQqAGRROlVhXz4CY1FjBmcIaQA9AmcAZQU3Vz0Pe1MkBWoEO1I5CS5Tbg85BycCaAsiAWcEaFE/ByRYOVZsVmEEcwA2UXNVal85AmpRcQYkCDwAfgJmACcFPlc3DzpTdQVyBDJScAk2Uz4PZwcnAjALOQE8BDVRawdjWGRWEFY2BHMANlFzVWpfOAJqUXEGYghmAG8CfwBvBXdXPQ81U20FcgR9UmoJeFNrDzgHJwJoCyIBZwRoUTEHPFgqVm9WZARlAEZRIFVwXysCuFHhBt4IuwDZAtAAsQWUV48P6VPyBeIE71KVCZVT6A/hB40CugvzAcoEvFG3B5RY51blVtsEcwA2UXNVal8zAmpRcQYkCD8APQIxADgFVFduD2NTdQVrBHpSOQk/Uz8PZwcnAnwLJAEtBDdRagdnWGxWdlZgBGEAPFE2VWBfPAJ/USAGCAhgAGwCbABiBTRXMA8xU2UFYAQwUjYJOlM0D2UHNwJmC2gBcwQxUXUHYVgqVmJWIQRrAD5ROlVyX2UCJVE+BnUIaQAvAmcAZQU+VyUPMVN1BWsEelI5CThTPQ9/B2ECMgsoAS4EeVE+B29YMlZoVmkEIgA3UTVVal8pAiNRJwYuCD4AOQJ/AG8FSlc8D3NTbQVnBDNSIQl/U3MPJAdpAjYLGAE5BHlRPgdvWDJWaVZpBCIAN1E1VWpfKQIzUTwGOwg9AC4CfwBvBUpXPA9zU20FZwQzUiEJb1NoDzEHagIhCxgBOQR5UT4Hb1gyVmlWaQQiADdRMVVhXzECclEjBiUINwA6AjgAJgVUV3UPaVM0BTUEK1I4CX9TPQ9pBz8CcQthAXMEa1E1ByRYM1YqVmgEZgA3USJVKV9+AjFRPQY9CDsAPQJ/AG8Fd1c9DzRTbQVyBDlSLQk8UzcPfwc+Ai4LLAEg')