SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 3)
    Function coalesce (children 1)
     ExpressionList (children 2)
      Literal NULL
      Function toNullable (children 1)
       ExpressionList (children 1)
        Function toDecimal32 (children 1)
         ExpressionList (children 2)
          Literal UInt64_8
          Literal UInt64_0
    Function coalesce (children 1)
     ExpressionList (children 2)
      Literal NULL
      Function toNullable (children 1)
       ExpressionList (children 1)
        Function toDecimal64 (children 1)
         ExpressionList (children 2)
          Literal UInt64_8
          Literal UInt64_0
    Function coalesce (children 1)
     ExpressionList (children 2)
      Literal NULL
      Function toNullable (children 1)
       ExpressionList (children 1)
        Function toDecimal128 (children 1)
         ExpressionList (children 2)
          Literal UInt64_8
          Literal UInt64_0