> ## 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.

# check_* 会话级设置

> check_* 生成分组中的 ClickHouse 会话级设置。

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 [源码](https://github.com/ClickHouse/ClickHouse/blob/master/src/Core/Settings.cpp) 自动生成。

<div id="check_named_collection_dependencies">
  ## check\_named\_collection\_dependencies
</div>

<SettingsInfoBlock type="Bool" default_value="1" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "26.2"},{"label": "1"},{"label": "新增设置，用于检查删除命名集合是否会导致依赖它的表失效。"}]}]} />

检查 DROP NAMED COLLECTION 不会导致依赖它的表失效

<div id="check_query_single_value_result">
  ## check\_query\_single\_value\_result
</div>

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

<VersionHistory rows={[{"id": "row-1","items": [{"label": "25.12"},{"label": "0"},{"label": "已更改此设置，使 CHECK TABLE 更实用"}]}]} />

定义在 `MergeTree` 家族引擎中，[CHECK TABLE](/docs/zh/reference/statements/check-table) 查询结果的详细程度。

可能的值：

* 0 — 查询会显示表中每个数据分区片段各自的检查状态。
* 1 — 查询会显示表的整体检查状态。

<div id="check_referential_table_dependencies">
  ## check\_referential\_table\_dependencies
</div>

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

检查 DDL 查询 (如 DROP TABLE 或 RENAME) 是否会破坏引用依赖关系

<div id="check_table_dependencies">
  ## check\_table\_dependencies
</div>

<SettingsInfoBlock type="Bool" default_value="1" />

检查 DDL 查询 (如 DROP TABLE 或 RENAME) 是否会破坏依赖项