> ## 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_delay_* MergeTree 表设置

> 属于 min_delay_* 自动生成分组的 ClickHouse 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，由 ClickHouse 源代码自动生成。

<div id="min_delay_to_insert_ms">
  ## min\_delay\_to\_insert\_ms
</div>

<SettingsInfoBlock type="UInt64" default_value="10" />

当单个分区内有大量未合并的 parts 时，向 MergeTree 表插入数据的最小延迟 (单位：毫秒) 。

<div id="min_delay_to_mutate_ms">
  ## min\_delay\_to\_mutate\_ms
</div>

<SettingsInfoBlock type="UInt64" default_value="10" />

当存在大量未完成的变更时，MergeTree 表执行变更操作的最小延迟 (以毫秒为单位)