AlterQuery  test_flatten_nested_crash (children 2)
 ExpressionList (children 1)
  AlterCommand ADD_COLUMN (children 1)
   ColumnDeclaration arr.nested (children 1)
    DataType Array (children 1)
     ExpressionList (children 1)
      DataType Tuple (children 1)
       ExpressionList (children 2)
        NameTypePair a (children 1)
         DataType String
        NameTypePair b (children 1)
         DataType Float64
 Identifier test_flatten_nested_crash
