ClickHouse/docs/en/operations/system-tables/detached_parts.md
Anna a6fb067a75
DOCSUP-1915: Split system-table.md into separate files. (#13160)
* Corrected en files

* Split system-tables.md into separate files

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Co-authored-by: Anna Devyatova <annadevyatova@yandex-team.ru>
Co-authored-by: Sergei Shtykov <bayonet@yandex-team.ru>
Co-authored-by: alexey-milovidov <milovidov@yandex-team.ru>
2020-08-06 11:50:29 +03:00

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# system.detached_parts {#system_tables-detached_parts}
Contains information about detached parts of [MergeTree](../../engines/table-engines/mergetree-family/mergetree.md) tables. The `reason` column specifies why the part was detached.
For user-detached parts, the reason is empty. Such parts can be attached with [ALTER TABLE ATTACH PARTITION\|PART](../../sql-reference/statements/alter/partition.md#alter_attach-partition) command.
For the description of other columns, see [system.parts](../../operations/system-tables/parts.md#system_tables-parts).
If part name is invalid, values of some columns may be `NULL`. Such parts can be deleted with [ALTER TABLE DROP DETACHED PART](../../sql-reference/statements/alter/partition.md#alter_drop-detached).
[Original article](https://clickhouse.tech/docs/en/operations/system_tables/detached_parts) <!--hide-->