-`auth_type` ([Enum8](../../sql-reference/data-types/enum.md)('no_password' = 0, 'plaintext_password' = 1, 'sha256_password' = 2, 'double_sha1_password' = 3, 'bcrypt_password' = 4, 'ldap' = 5, 'kerberos' = 6, 'ssl_certificate' = 7)) — Shows the authentication type. There are multiple ways of user identification: with no password, with plain text password, with [SHA256](https://ru.wikipedia.org/wiki/SHA-2)-encoded password, with [double SHA-1](https://ru.wikipedia.org/wiki/SHA-1)-encoded password or with [bcrypt](https://en.wikipedia.org/wiki/Bcrypt)-encoded password.
-`host_ip` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — IP addresses of hosts that are allowed to connect to the ClickHouse server.
-`host_names` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Names of hosts that are allowed to connect to the ClickHouse server.
-`host_names_regexp` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Regular expression for host names that are allowed to connect to the ClickHouse server.
-`host_names_like` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — Names of hosts that are allowed to connect to the ClickHouse server, set using the LIKE predicate.
-`default_roles_list` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — List of granted roles provided by default.
-`default_roles_except` ([Array](../../sql-reference/data-types/array.md)([String](../../sql-reference/data-types/string.md))) — All the granted roles set as default excepting of the listed ones.