SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 6)
    Function toDecimal64 (alias x) (children 1)
     ExpressionList (children 2)
      Literal Float64_12345.6789
      Literal UInt64_4
    Function trunc (children 1)
     ExpressionList (children 2)
      Identifier x
      Literal Int64_-1
    Function trunc (children 1)
     ExpressionList (children 2)
      Identifier x
      Literal Int64_-2
    Function trunc (children 1)
     ExpressionList (children 2)
      Identifier x
      Literal Int64_-3
    Function trunc (children 1)
     ExpressionList (children 2)
      Identifier x
      Literal Int64_-4
    Function trunc (children 1)
     ExpressionList (children 2)
      Identifier x
      Literal Int64_-5