> ## 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.

# compatibility_ignore_* 会话设置

> ClickHouse compatibility_ignore_* 生成组中的会话设置。

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，并根据 [源代码](https://github.com/ClickHouse/ClickHouse/blob/master/src/Core/Settings.cpp) 自动生成。

<div id="compatibility_ignore_auto_increment_in_create_table">
  ## compatibility\_ignore\_auto\_increment\_in\_create\_table
</div>

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

如果为 true，则忽略列声明中的 AUTO\_INCREMENT 关键字；否则返回错误。这有助于简化从 MySQL 迁移

<div id="compatibility_ignore_collation_in_create_table">
  ## compatibility\_ignore\_collation\_in\_create\_table
</div>

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

在 CREATE TABLE 中忽略排序规则的 compatibility 设置