ClickHouse/docs/en/sql-reference/statements/alter/ttl.md

---
toc_priority: 44
toc_title: TTL
---

### Manipulations with Table TTL {#manipulations-with-table-ttl}

You can change [table TTL](../../../engines/table-engines/mergetree-family/mergetree.md#mergetree-table-ttl) with a request of the following form:

``` sql
ALTER TABLE table-name MODIFY TTL ttl-expression
```