AlterQuery  nested (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration n.c (children 2)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType UInt64
    Function arrayMap (children 1)
     ExpressionList (children 2)
      Function lambda (children 1)
       ExpressionList (children 2)
        Function tuple (children 1)
         ExpressionList (children 1)
          Identifier x
        Function multiply (children 1)
         ExpressionList (children 2)
          Identifier x
          Literal UInt64_2
      Identifier n.a
 Identifier nested