Most usage columns of table based on system.query_log
| system.merge_tree_settings.name | 9 |
| system.merge_tree_settings.min | 1 |
| system.merge_tree_settings.description | 1 |
| system.merge_tree_settings.max | 1 |
| system.merge_tree_settings.is_obsolete | 1 |
| system.merge_tree_settings.changed | 1 |
| system.merge_tree_settings.type | 1 |
| system.merge_tree_settings.value | 1 |
| system.merge_tree_settings.readonly | 1 |
