> ## 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.

# mysql_map_* session settings

> ClickHouse session settings in the mysql_map_* generated group.

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
  }}>Type</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{type}</div>
      <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>Default</div>
      <div style={{
    overflowWrap: "anywhere"
  }}>{default_value}</div>
      {changeable_without_restart && <div style={{
    fontWeight: 600,
    opacity: 0.72,
    marginInlineStart: "0.5rem"
  }}>
          Changeable without restart
        </div>}
      {changeable_without_restart && <div style={{
    overflowWrap: "anywhere"
  }}>
          {changeable_without_restart}
        </div>}
    </div>;
};

These settings are available in [system.settings](/docs/reference/system-tables/settings) and are autogenerated from [source](https://github.com/ClickHouse/ClickHouse/blob/master/src/Core/Settings.cpp).

<h2 id="mysql_map_fixed_string_to_text_in_show_columns">
  mysql\_map\_fixed\_string\_to\_text\_in\_show\_columns
</h2>

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

<VersionHistory rows={[{"id": "row-1","items": [{"label": "24.2"},{"label": "1"},{"label": "Reduce the configuration effort to connect ClickHouse with BI tools."}]}]} />

When enabled, [FixedString](/docs/reference/data-types/fixedstring) ClickHouse data type will be displayed as `TEXT` in [SHOW COLUMNS](/docs/reference/statements/show#show_columns).

Has an effect only when the connection is made through the MySQL wire protocol.

* 0 - Use `BLOB`.
* 1 - Use `TEXT`.

<h2 id="mysql_map_string_to_text_in_show_columns">
  mysql\_map\_string\_to\_text\_in\_show\_columns
</h2>

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

<VersionHistory rows={[{"id": "row-1","items": [{"label": "24.2"},{"label": "1"},{"label": "Reduce the configuration effort to connect ClickHouse with BI tools."}]}]} />

When enabled, [String](/docs/reference/data-types/string) ClickHouse data type will be displayed as `TEXT` in [SHOW COLUMNS](/docs/reference/statements/show#show_columns).

Has an effect only when the connection is made through the MySQL wire protocol.

* 0 - Use `BLOB`.
* 1 - Use `TEXT`.