CategoryBla? AND EXTRACTVALUE(8776,CONCAT(0x5c,0x71627a7071,(SELECT (ELT(8776=8776,1))),0x71707a7171

Describe CategoryBla? AND EXTRACTVALUE(8776,CONCAT(0x5c,0x71627a7071,(SELECT (ELT(8776=8776,1))),0x71707a7171 here.