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 ''VmdUYVVpUzxWIAooBjlSPlA4AiIMPg8gCCcHLAM4B2tTZlYrBCIAbgR6Bm0CN1E/AnILK1Q+CCEJb1U' at line 1]
insert into demo_cookie(userid,cookies) values(,'VmdUYVVpUzxWIAooBjlSPlA4AiIMPg8gCCcHLAM4B2tTZlYrBCIAbgR6Bm0CN1E/AnILK1Q+CCEJb1U/AG4EJ1ZrVARVJVNjVjcKeQY4UnVQOAIwDGcPdwh2B2MDJAc8UzRWYwQiADQEbQYzAnVRYAIjC3pUJwhpCSZVMABkBD9WJFR5VWpTdVZhCm4GOVIkUGcCbQw8DzwIOAd6A2wHdVM5VmkEOgB3BCsGbAJ0UT8CaQszVCcIJwkmVW8AJgRaVnJUIlUhU2NWeQpgBnBSPFAzAjoMfw9lCHYHYwMkBzxTNFZjBCIAIAR6BjICdVFaAjkLbVQnCGkJJlUwAGUEP1YkVGtVc1M9VigKYQY6UjxQIAJ1DC4PMAgmBwcDJQdpU29WPAQiAG4EegZtAjZRPwJyCzlUJwhpCSZVMABlBDRWPFR5VSFTdFY0Cj8GdlJlUHYCaQwzDzMIOwd6A2wHZ1M5VmgEOgAuBGAGbQI2UTMCZgs5VDUIaQk0VTAAZQQ2VjxUIFUiUzxWaQphBiFSb1BmAiIMZg8mCG4HawNtByRTMlZvBDYAdwQyBiQCPVE3AmoLK1R2CDwJd1UxACcEP1Y2VGFVc1MkVmAKKAY5Uj9QOAIiDD4PPQg1BzYDOQdjU29WEARkAHcEMgYkAj1RNgJqCytUMAhmCWVVKABvBHZWPFRuVWtTJFYvCjIGd1JqUGcCIgxmDyYIbgdqA2IHPFMhVg0ENgBkBDsGdwInUSUCtAuxVKgItQnZVaAAvQSAVotUvlXBU45Wsgr+BrFS4FCUApkMfw9uCCcHYgNvBzxTIVYqBG0ANARlBjsCV1FsAjMLK1Q+CCEJb1U5AGwEP1YkVHRVJFN2VjcKNAZiUmJQLQIyDG0PZAhiB2gDYAcpU3BWBgQyAGUEOAZhAjdRMgJhCztUNAhiCWVVPwBhBDZWNVRvVWdTKFYxCisGZFIkUDkCcwxnD2YIbgd6AzkHc1NuVnsEOwAmBDMGZgI9UScCYQsrVD4IIQlvVT4AbgQnVmJUOlUoU3VWeQpgBmpSPFAzAjsMLg9vCGEHYgN1B3VTd1YgBGwAMAQrBmwCSVE+AiMLM1QyCGgJd1V5ACAEfFZqVD5VGFNiVnkKYAZqUjxQMgI7DC4PbwhhB2IDdQdlU2xWNQRvACcEKwZsAklRPgIjCzNUMghoCXdVaQA7BGlWaVQpVRhTYlZ5CmAGalI8UDICOwwuD28IZQdpA20HJFNzVisEZQAzBGwGJQJXUXcCOQtqVGAIcAluVXkAbgQxVjxUeVVhUyhWawprBiFSPVBxAjoMag9vCHYHIQMiB2dTbVYzBGkANAQrBmwCdFE/AmQLM1QnCGIJe1U6AGQEJ1Y9VCZVLFN7')