> ## 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.

# format_binary_* 格式设置

> ClickHouse 在 format_binary_* 生成组中的格式设置。

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>;
};

这些设置是从[source](https://github.com/ClickHouse/ClickHouse/blob/master/src/Core/FormatFactorySettings.h)自动生成的。

<div id="format_binary_max_array_size">
  ## format\_binary\_max\_array\_size
</div>

<SettingsInfoBlock type="UInt64" default_value="1073741824" />

RowBinary format 中 Array 的最大允许大小。该设置可防止在数据损坏时分配大量内存。0 表示不限制

<div id="format_binary_max_object_size">
  ## format\_binary\_max\_object\_size
</div>

<SettingsInfoBlock type="UInt64" default_value="100000" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "25.12"},{"label": "100000"},{"label": "用于限制 JSON type 二进制反序列化期间对象最大大小的新设置"}]}]} />

JSON type 的 RowBinary format 中，单个对象允许的最大路径数。可防止在数据损坏时分配大量内存。0 表示不限制

<div id="format_binary_max_string_size">
  ## format\_binary\_max\_string\_size
</div>

<SettingsInfoBlock type="UInt64" default_value="1073741824" />

<VersionHistory rows={[{"id": "row-1","items": [{"label": "22.12"},{"label": "1073741824"},{"label": "防止分配大量内存"}]}]} />

RowBinary format 中 String 的最大允许大小。该设置可在数据损坏时防止分配大量内存。0 表示不受限制