public AuthenticationService(DBConnector connector) { _connector = connector; _clearSIDQuery = $@"UPDATE sessions_log SET sid = NULL { SqlQuerySyntaxHelper.Output(_connector.DatabaseType, new[] { "USER_ID", "SESSION_ID" }) } WHERE sid = @sid {SqlQuerySyntaxHelper.Returning(_connector.DatabaseType, new[] { "USER_ID", "SESSION_ID" })}"; _tokenQuery = $@"select UserId, ExpirationDate from access_token where Token = @token and Application = @application and { SqlQuerySyntaxHelper.Now(_connector.DatabaseType) } < ExpirationDate"; }