True
{'fields': [{'name': 'name', 'type': 'string'},
{'name': 'variable'},
{'name': 'value'}]}
+-----------+--------------+-------+
| name | variable | value |
+===========+==============+=======+
| 'germany' | 'id' | 1 |
+-----------+--------------+-------+
| 'germany' | 'population' | 83 |
+-----------+--------------+-------+
| 'france' | 'id' | 2 |
+-----------+--------------+-------+
| 'france' | 'population' | 66 |
+-----------+--------------+-------+
| 'spain' | 'id' | 3 |
+-----------+--------------+-------+