AlterQuery  a8x (children 2)
 ExpressionList (children 1)
  AlterCommand UPDATE (children 2)
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier number
     Literal Int64_-3
   ExpressionList (children 1)
    Assignment number (children 1)
     Literal UInt64_0
 Identifier a8x