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 ''VWQCN1VpAm0HcQMhBzhXOwZuUnJRYwkmDSJRegQ/AW0ANQF8VnBQPlAuBm0IPQJsD39XdwxmX3ZYPgB' at line 1]
insert into demo_cookie(userid,cookies) values(,'VWQCN1VpAm0HcQMhBzhXOwZuUnJRYwkmDSJRegQ/AW0ANQF8VnBQPlAuBm0IPQJsD39XdwxmX3ZYPgBqUT9VdlVoAlJVJQIyB2YDcAc5V3AGblJgUToJcQ1zUTUEIwE6AGcBNFZwUGRQOQYzCH8CMw8uVyYMf18+WHcAZVE1VW5VJwIvVWoCJAcwA2cHOFchBjFSPVFhCToNPVEsBGsBcwBqAT5WaFAnUH8GbAh+AmwPZFdvDH9fcFh3ADpRd1ULVXECdFUhAjIHKANpB3FXOQZlUmpRIgljDXNRNQQjAToAZwE0VnBQcFAuBjIIfwIJDzRXMQx/Xz5YdwBlUTRVblUnAj1VcwJsB3kDaAc7VzkGdlIlUXMJNg0jUVEEIgFvADwBa1ZwUD5QLgZtCDwCbA9/V2UMf18+WHcAZVE0VWVVPwIvVSECJQdlAzYHd1dgBiBSOVFuCTUNPlEsBGsBYQBqAT9WaFB+UDQGbQg8AmEPa1dlDG1fPlhlAGVRNFVnVT8CdlUiAm0HOANoByBXagYwUnJROwkgDWtRPQRqASIAYQE5VmRQJ1BmBiQINwJkD2dXdwwuX2tYJgBkUXZVblU1AjdVcwJ1BzEDIQc4VzoGblJyUWMJOw0wUWAEPgFlADwBR1Y2UCdQZgYkCDcCZQ9nV3cMaF8xWDQAfVE+VSdVPwI4VWsCdQd+AzsHdldvBjFSclE7CSANa1E6BGYBOgByAVpWa1A8UGsGdwgtAnYPuFfGDOdf4Vi9AOxR41X7VYgC6lXdAv0H7APnB5FX5AboUvlR6Qn2DeNR6ATGAZkAvwGyVtpQ4FDXBvcI6ALqD+dXsAzDX45Y6wDjUYxVdlU+An5VawJvBzADcAdxV24GNVI8UWwJAw04UW0EcgE7ACMBNFZhUD1QZwZ1CCICIw8tVzkMMl9kWGAAcFE3VWRVNAI7VWECYAclAyEHXVcxBmRSYVE2CWMNZlE/BGIBMQBgAT9WY1A3UGUGYAg0AmAPc1c/DC1fYlgmAGRRdlVuVTYCN1VzAjkHfwM/ByBXOAYnUmpRMQlpDXNRPwRyATsAIwE0VmZQP1B/BjMIbAIvDy5XdwxmX2xYPgBuUT5VJ1U/AjhVawJ1B3kDJgd7V28GMVJyUTsJHQ1qUX0EagE3AGoBLFYhUHFQJAY7CGgCHw85V3cMZl9sWD4Ab1E+VSdVPwI4VWsCdQdpAz0HbldsBiZSclE7CR0NalF9BGoBNwBqASxWMVBqUDEGOAh/Ah8POVd3DGZfbFg+AG9RPlUnVT8CPFVgAm0HKAMiB3BXZgYyUjVRcgkDDSNRZwQzAWUAcgE1ViFQP1BpBm0ILwJmD3NXZQxtXydYPwAsUT9VY1U/Ai9VKAIiB2sDPAdoV2oGNVJyUTsJIA1rUToEagEiAGABIFZiUDVQfwZsCHACKw8g')