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Update system.parts

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add description 'Low versions must be YYYYMM format, and now it can be any' in partition column description.
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Jason 2018-06-15 09:15:36 +08:00 committed by GitHub
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docs/en/system_tables/system.parts.md
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@ -6,7 +6,7 @@ Each row describes one part of the data.
Columns:
- partition (String) – The partition name. YYYYMM format. To learn what a partition is, see the description of the [ALTER](../query_language/queries.md#query_language_queries_alter) query.
- partition (String) – The partition name. Low versions must be YYYYMM format, and now it can be any. To learn what a partition is, see the description of the [ALTER](../query_language/queries.md#query_language_queries_alter) query.
- name (String) – Name of the data part.
- active (UInt8) – Indicates whether the part is active. If a part is active, it is used in a table; otherwise, it will be deleted. Inactive data parts remain after merging.
- marks (UInt64) – The number of marks. To get the approximate number of rows in a data part, multiply ``marks`` by the index granularity (usually 8192).