> ## 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_execution_speed_* 会话设置

> ClickHouse 中 min_execution_speed_* 自动生成分组的会话设置。

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.settings](/docs/zh/reference/system-tables/settings) 中查看，并由 [源代码](https://github.com/ClickHouse/ClickHouse/blob/master/src/Core/Settings.cpp) 自动生成。

<div id="min_execution_speed">
  ## min\_execution\_speed
</div>

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

最小执行速度，单位为每秒行数。当
[`timeout_before_checking_execution_speed`](/docs/zh/reference/settings/session-settings/other#timeout_before_checking_execution_speed)
到期时，会对每个数据块进行检查。如果执行速度低于该值，则会抛出异常。

<div id="min_execution_speed_bytes">
  ## min\_execution\_speed\_bytes
</div>

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

每秒执行字节数的最小值。在
[`timeout_before_checking_execution_speed`](/docs/zh/reference/settings/session-settings/other#timeout_before_checking_execution_speed)
到期后，会对每个数据块进行检查。如果执行速度低于该值，则会抛出异常。