ClickHouse/docs/en/engines/table-engines/special/index.md

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50	Special

Special Table Engines

There are three main categories of table engines:

• MergeTree engine family for main production use.
• Log engine family for small temporary data.
• Table engines for integrations.

The remaining engines are unique in their purpose and are not grouped into families yet, thus they are placed in this “special” category.