---toc_priority:44toc_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:``` sqlALTERTABLEtable-nameMODIFYTTLttl-expression```