--- toc_folder_title: Special toc_priority: 31 --- # Special Table Engines There are three main categories of table engines: - [MergeTree engine family](../../../engines/table-engines/mergetree-family/index.md) for main production use. - [Log engine family](../../../engines/table-engines/log-family/index.md) for small temporary data. - [Table engines for integrations](../../../engines/table-engines/integrations/index.md). The remaining engines are unique in their purpose and are not grouped into families yet, thus they are placed in this “special” category.