SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function reinterpretAsFloat32 (children 1)
     ExpressionList (children 1)
      Identifier a
    Function reinterpretAsUInt32 (alias a) (children 1)
     ExpressionList (children 1)
      Function toFloat32 (children 1)
       ExpressionList (children 1)
        Literal Float64_0.2