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系统。detached_parts

包含有关分离部分的信息 MergeTree 桌子 该 reason 列指定分离部件的原因。

对于用户分离的部件，原因是空的。 这些部件可以附加 ALTER TABLE ATTACH PARTITION|PART 指挥部

有关其他列的说明，请参阅 系统。零件.

如果部件名称无效，某些列的值可能为 NULL. 这些部分可以删除 ALTER TABLE DROP DETACHED PART.