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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 ''UmNSZw8zUj0HcQspBjleMgBoACBUZgwjDCNedQA7B2sFMFUoAScBbwJ8BG9RZFE/BXVXd1Y8XXRdO14' at line 1]
insert into demo_cookie(userid,cookies) values(,'UmNSZw8zUj0HcQspBjleMgBoACBUZgwjDCNedQA7B2sFMFUoAScBbwJ8BG9RZFE/BXVXd1Y8XXRdO140VDoCIVJvUgIPf1JiB2YLeAY4XnkAaAAyVD8MdAxyXjoAJwc8BWJVYAEnATUCawQxUSZRYAUkVyZWJV08XXJeO1QwAjlSIFJ/DzBSdAcwC28GOV4oADcAb1RkDD8MPF4jAG8HdQVvVWoBPwF2Ai0EblEnUT8FbldvViVdcl1yXmRUcgJcUnZSJA97UmIHKAthBnBeMABjADhUJwxmDHJeOgAnBzwFYlVgAScBIQJ8BDBRJlFaBT5XMVYlXTxdcl47VDECOVIgUm0PKVI8B3kLYAY6XjAAcAB3VHYMMwwiXl4AJgdpBTlVPwEnAW8CfARvUWVRPwV1V2VWJV08XXJeO1QxAjJSOFJ/D3tSdQdlCz4Gdl5pACYAa1RrDDAMP14jAG8HZwVvVWsBPwEvAmYEb1FlUTEFb1dlVjddPF1gXjtUMQIwUjhSJg94Uj0HOAtgBiFeYwA2ACBUPgwlDGpeMgBuByQFZFVuAT0BdgI0BCZRblE3BW1Xd1Z0XWldI146VHMCOVIyUmcPKVIlBzELKQY5XjMAaAAgVGYMPgwxXm8AOgdjBTlVEwFhAXYCNAQmUW5RNgVtV3dWMl0zXTJeI1Q7AnBSOFJoDzFSJQd+CzMGd15mADcAIFQ+DCUMal41AGcHPAV3VWgBNgFsAkQEdVF0USUFv1fnVo5d7l2EXoxU5QKTUopStA+uUrUH7AvMBppe5QDuAIpU4AzcDPBe5ADoB7wFsFXEAY4BvQKtBMJRs1G3BcVXula7XY5dI146VHMCOVI6UmcPKVJ0B2cLOwZvXmYAAgBrVGYMdAxrXnIAbgc1BW1VYAEnAXsCegQlUThRagU2VzFWKF01XTFeMFQ2AjNSNVJyD3hSWAc4C2oGMl48AGIANVQ0DGQMYF44AGEHMgVhVW8BMAFgAjwEe1E+UXUFMFd3VjxddF07XjJUOgIhUmxSKA9mUiUHMQspBjleOwBoACBUNAx0DGtecgBuBzIFb1V4AWEBNQJ2BCZRdlE+BT5Xb1Y2XTxdcl47VDUCOVIgUi4Pf1J+B2YLPwYhXjEAHAA5VHYMbAxnXjsAdgd1BSFVIwFpATECRgQxUXZRPgU+V29WN108XXJeO1Q1AjlSIFI+D2RSawdlCygGIV4xABwAOVR2DGwMZ147AHYHZQU6VTYBagEmAkYEMVF2UT4FPldvVjddPF1yXjtUMQIyUjhSfw97UnUHbws8BmZeeAACAHBUbAw1DDVeIwBvB3UFb1VuAT8BdgI/BHtRZFE1BXVXblZ0XT1dNl47VCICelJ3UjwPZVJtB2MLOwYhXjEAIQA4VDEMbAxyXjEAegc2BWVVeAE+ASkCcgQo')