AlterQuery  nest (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration nested_field.e2 (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Tuple (children 1)
       ExpressionList (children 1)
        NameTypePair some_value (children 1)
         DataType Int32
 Identifier nest
