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DanRoscigno 2022-08-12 14:40:09 -04:00
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docs/en/engines/table-engines/mergetree-family/mergetree.md
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@ -482,9 +482,11 @@ For example:
## Projections {#projections}
Projections are like [materialized views](../../../sql-reference/statements/create/view.md#materialized) but defined in part-level. It provides consistency guarantees along with automatic usage in queries.
::: note
:::note
When you are implementing projections you should also consider the [force_optimize_projection](../../../operations/settings/settings.md#force-optimize-projection) setting.
:::
Projections are not supported in the `SELECT` statements with the [FINAL](../../../sql-reference/statements/select/from.md#select-from-final) modifier.
### Projection Query {#projection-query}