> ## Documentation Index
> Fetch the complete documentation index at: https://clickhouse.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# min_age_* MergeTree 表设置

> ClickHouse 在 min_age_* 分组中的 MergeTree 表设置。

export const SettingsInfoBlock = ({type, default_value, changeable_without_restart}) => {
  return <div className="not-prose" style={{
    display: "flex",
    flexWrap: "wrap",
    alignItems: "baseline",
    columnGap: "0.5rem",
    rowGap: "0.125rem",
    margin: "0.375rem 0",
    fontSize: "0.8125rem",
    lineHeight: "1.125rem"
  }}>
      <div style={{
    fontWeight: 600,
    opacity: 0.72
  }}>类型</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{type}</div>
      <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>默认值</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{default_value}</div>
      {changeable_without_restart && <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>
          无需重启即可更改
        </div>}
      {changeable_without_restart && <div style={{
    overflowWrap: "anywhere"
  }}>
          {changeable_without_restart}
        </div>}
    </div>;
};

这些设置可在 [system.merge\_tree\_settings](/docs/zh/reference/system-tables/merge_tree_settings) 中找到，并由 ClickHouse 源代码自动生成。

<div id="min_age_to_force_merge_on_partition_only">
  ## min\_age\_to\_force\_merge\_on\_partition\_only
</div>

<SettingsInfoBlock type="Bool" default_value="0" />

是否仅对整个分区应用 `min_age_to_force_merge_seconds`，而不应用于子集。

可能的值：

* true, false

<div id="min_age_to_force_merge_seconds">
  ## min\_age\_to\_force\_merge\_seconds
</div>

<SettingsInfoBlock type="UInt64" default_value="0" />

如果范围内的每个 part 的存留时间都超过
`min_age_to_force_merge_seconds` 的值，则合并 parts。

可能的值：

* 正整数。