How to solve "role 'readaccess' does not exist" in PostgreSQL?

The error message "role 'readaccess' does not exist" in PostgreSQL means that the user or role 'readaccess' does not exist in the database. This error typically occurs when you try to grant permissions to a user that does not exist or when you try to assign a role to a non-existent user.

To resolve this issue, you can create the 'readaccess' role in PostgreSQL using the following SQL command:


CREATE ROLE readaccess;

If the role already exists but you are still getting this error message, you may need to double-check the spelling and case of the role name to ensure that it matches the name you are using in your SQL statement.

After creating the role, you can then grant the necessary permissions to the role using the appropriate SQL command.

For example, to grant SELECT permission to the 'readaccess' role on a specific table, you can use the following SQL command:


GRANT SELECT ON table_name TO readaccess;

Note that you may need to be logged in as a superuser or a user with sufficient privileges to create a new role and grant permissions to it.

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