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 ''VGUHMgc7UzxRJwooAT5WOgBoVnYFN1xzDSICKQoxUj5WYwF8DihQPlUrVzxWYwJsUCAKKlM5CyIBZ1U' at line 1]
insert into demo_cookie(userid,cookies) values(,'VGUHMgc7UzxRJwooAT5WOgBoVnYFN1xzDSICKQoxUj5WYwF8DihQPlUrVzxWYwJsUCAKKlM5CyIBZ1U/BWtRclRpB1cHd1NjUTAKeQE/VnEAaFZkBW5cJA1zAmYKLVJpVjEBNA4oUGRVPFdiViECM1BxCntTIAtqAS5VMAVhUWpUJgcqBzhTdVFmCm4BPlYgADdWOQU1XG8NPQJ/CmVSIFY8AT4OMFAnVXpXPVYgAmxQOwoyUyALJAEuVW8FI1EPVHAHcQdzU2NRfgpgAXdWOABjVm4Fdlw2DXMCZgotUmlWMQE0DihQcFUrV2NWIQIJUGsKbFMgC2oBLlUwBWBRalQmBzgHIVM9US8KYQE9VjgAcFYhBSdcYw0jAgIKLFI8VmoBaw4oUD5VK1c8VmICbFAgCjhTIAtqAS5VMAVgUWFUPgcqB3NTdFEzCj8BcVZhACZWPQU6XGANPgJ/CmVSMlY8AT8OMFB+VTFXPFZiAmBQNgo4UzILagE8VTAFYFFjVD4HcwdwUzxRbgphASZWawA2VnYFb1x1DWsCbgpkUnFWNwE4Dj5QJ1VjV3VWaQJkUDgKKlNxCz8Bf1UxBSJRalQ0BzIHIVMkUWcKKAE+VjsAaFZ2BTdcbg0wAjMKMFI2VmoBRw5uUCdVY1d1VmkCZVA4CipTNwtlAW1VKAVqUSNUPgc9BzlTJFEoCjIBcFZuADdWdgVvXHUNawJvCmtSaVYkATcOMlAxVWhXJlZzAnZQ5gqxU7ELtgHRVaAFt1HlVJcH7we/U69RtQr+AbZW5ADEVs0Fdlw9DSICZwpmUmlWJAF9DmdQZFU0V2pWAwI/UGEKKlM5CyIBZ1U5BWlRalQmBycHdlN2UTAKNAFlVmYAfVZmBWRcNw1nAm0KaVJ8VnUBUQ44UDVVaVcwVmMCYVAzCjpTMwthAW1VPwVgUWNUNgc4BzdTKFE2CisBY1YgAGlWJwVuXDUNawJ/CjBSJlZrASwOMVB2VWJXN1ZpAnRQMwoqUzkLIgFnVT4Fa1FyVGAHaQd6U3VRfgpgAW1WOABjVm8FJ1w8DWQCZwp8UiBWcgF3DmZQYFV6Vz1WHQJtUHEKMlM1C2sBf1V5BSVRKVRoB20HSlNiUX4KYAFtVjgAYlZvBSdcPA1kAmcKfFIwVmkBYg5lUHdVelc9Vh0CbVBxCjJTNQtrAX9VaQU+UTxUawd6B0pTYlF+CmABbVY4AGJWbwUnXDwNYAJsCmRScVZ2AXwOb1BjVT1XdFYDAiRQawprU2cLcwFmVXkFa1FkVD4HKgczUyhRbAprASZWOQAhVm4FY1w8DXMCJAorUjJWaAFkDmNQZFV6Vz1WIAJsUDYKMlMgC2EBc1U6BWFRclQ/B3UHflN7')