# Update PostgreSQL username without password

This function renames a PostgreSQL® database user.

Warning:

* If you rename a PostgreSQL user, you must set the password for the database user. This is required because of the md5 hash that PostgreSQL creates to store user passwords.
* We strongly recommend that you use the Postgresql::rename_user function instead of this one.

Important:

When you disable the  PostgreSQL role, the system disables this function.

Endpoint: GET /Postgresql/rename_user_no_password
Version: 11.136.0.25
Security: BasicAuth

## Query parameters:

  - `newname` (string, required)
    The database user's new name.

Note:

If database prefixing is enabled, this parameter must include the database prefix for the account.
    Example: "dbuser2"

  - `oldname` (string, required)
    The database user's current name.

Note:

If database prefixing is enabled, this parameter must include the database prefix for the account.
    Example: "dbuser"

## Response 200 fields (application/json):

  - `apiversion` (integer)
    The version of the API.
    Example: 3

  - `func` (string)
    The name of the method called.
    Example: "rename_user_no_password"

  - `module` (string)
    The name of the module called.
    Example: "Postgresql"

  - `result` (object)

  - `result.data` (object,null)

  - `result.errors` (array,null)
    List of errors if the API failed.

  - `result.messages` (array,null)
    List of messages generated by the API.

  - `result.metadata` (object)

  - `result.status` (integer)
    * 1 - Success
* 0 - Failed. Check the errors field for more details.
    Enum: 0, 1

  - `result.warnings` (array,null)
    List of warnings generated by the API. Warnings describe non-critical failures or other problematic conditions noted while running an API.