1?) UNION ALL SELECT NULL,NULL,CONCAT(0x7176766271,0x6b4a6e73554a464e446c5a756a7a4c6e5052687343636a6

Describe 1?) UNION ALL SELECT NULL,NULL,CONCAT(0x7176766271,0x6b4a6e73554a464e446c5a756a7a4c6e5052687343636a6 here.