| "SIGNAL_TYPE_UNSPECIFIED"
| "SIGNAL_TYPE_NOT_PROTECTED_BY_AUTOMATIC_FAILOVER"
| "SIGNAL_TYPE_GROUP_NOT_REPLICATING_ACROSS_REGIONS"
| "SIGNAL_TYPE_NOT_AVAILABLE_IN_MULTIPLE_ZONES"
| "SIGNAL_TYPE_NOT_AVAILABLE_IN_MULTIPLE_REGIONS"
| "SIGNAL_TYPE_NO_PROMOTABLE_REPLICA"
| "SIGNAL_TYPE_NO_AUTOMATED_BACKUP_POLICY"
| "SIGNAL_TYPE_SHORT_BACKUP_RETENTION"
| "SIGNAL_TYPE_LAST_BACKUP_FAILED"
| "SIGNAL_TYPE_LAST_BACKUP_OLD"
| "SIGNAL_TYPE_VIOLATES_CIS_GCP_FOUNDATION_2_0"
| "SIGNAL_TYPE_VIOLATES_CIS_GCP_FOUNDATION_1_3"
| "SIGNAL_TYPE_VIOLATES_CIS_GCP_FOUNDATION_1_2"
| "SIGNAL_TYPE_VIOLATES_CIS_GCP_FOUNDATION_1_1"
| "SIGNAL_TYPE_VIOLATES_CIS_GCP_FOUNDATION_1_0"
| "SIGNAL_TYPE_VIOLATES_NIST_800_53"
| "SIGNAL_TYPE_VIOLATES_ISO_27001"
| "SIGNAL_TYPE_VIOLATES_PCI_DSS_V3_2_1"
| "SIGNAL_TYPE_LOGS_NOT_OPTIMIZED_FOR_TROUBLESHOOTING"
| "SIGNAL_TYPE_QUERY_DURATIONS_NOT_LOGGED"
| "SIGNAL_TYPE_VERBOSE_ERROR_LOGGING"
| "SIGNAL_TYPE_QUERY_LOCK_WAITS_NOT_LOGGED"
| "SIGNAL_TYPE_LOGGING_MOST_ERRORS"
| "SIGNAL_TYPE_LOGGING_ONLY_CRITICAL_ERRORS"
| "SIGNAL_TYPE_MINIMAL_ERROR_LOGGING"
| "SIGNAL_TYPE_QUERY_STATISTICS_LOGGED"
| "SIGNAL_TYPE_EXCESSIVE_LOGGING_OF_CLIENT_HOSTNAME"
| "SIGNAL_TYPE_EXCESSIVE_LOGGING_OF_PARSER_STATISTICS"
| "SIGNAL_TYPE_EXCESSIVE_LOGGING_OF_PLANNER_STATISTICS"
| "SIGNAL_TYPE_NOT_LOGGING_ONLY_DDL_STATEMENTS"
| "SIGNAL_TYPE_LOGGING_QUERY_STATISTICS"
| "SIGNAL_TYPE_NOT_LOGGING_TEMPORARY_FILES"
| "SIGNAL_TYPE_CONNECTION_MAX_NOT_CONFIGURED"
| "SIGNAL_TYPE_USER_OPTIONS_CONFIGURED"
| "SIGNAL_TYPE_EXPOSED_TO_PUBLIC_ACCESS"
| "SIGNAL_TYPE_UNENCRYPTED_CONNECTIONS"
| "SIGNAL_TYPE_NO_ROOT_PASSWORD"
| "SIGNAL_TYPE_WEAK_ROOT_PASSWORD"
| "SIGNAL_TYPE_ENCRYPTION_KEY_NOT_CUSTOMER_MANAGED"
| "SIGNAL_TYPE_SERVER_AUTHENTICATION_NOT_REQUIRED"
| "SIGNAL_TYPE_EXPOSED_BY_OWNERSHIP_CHAINING"
| "SIGNAL_TYPE_EXPOSED_TO_EXTERNAL_SCRIPTS"
| "SIGNAL_TYPE_EXPOSED_TO_LOCAL_DATA_LOADS"
| "SIGNAL_TYPE_CONNECTION_ATTEMPTS_NOT_LOGGED"
| "SIGNAL_TYPE_DISCONNECTIONS_NOT_LOGGED"
| "SIGNAL_TYPE_LOGGING_EXCESSIVE_STATEMENT_INFO"
| "SIGNAL_TYPE_EXPOSED_TO_REMOTE_ACCESS"
| "SIGNAL_TYPE_DATABASE_NAMES_EXPOSED"
| "SIGNAL_TYPE_SENSITIVE_TRACE_INFO_NOT_MASKED"
| "SIGNAL_TYPE_PUBLIC_IP_ENABLED"
| "SIGNAL_TYPE_IDLE"
| "SIGNAL_TYPE_OVERPROVISIONED"
| "SIGNAL_TYPE_HIGH_NUMBER_OF_OPEN_TABLES"
| "SIGNAL_TYPE_HIGH_NUMBER_OF_TABLES"
| "SIGNAL_TYPE_HIGH_TRANSACTION_ID_UTILIZATION"
| "SIGNAL_TYPE_UNDERPROVISIONED"
| "SIGNAL_TYPE_OUT_OF_DISK"
| "SIGNAL_TYPE_SERVER_CERTIFICATE_NEAR_EXPIRY"
| "SIGNAL_TYPE_DATABASE_AUDITING_DISABLED"
| "SIGNAL_TYPE_RESTRICT_AUTHORIZED_NETWORKS"
| "SIGNAL_TYPE_VIOLATE_POLICY_RESTRICT_PUBLIC_IP"
| "SIGNAL_TYPE_QUOTA_LIMIT"
| "SIGNAL_TYPE_NO_PASSWORD_POLICY"
| "SIGNAL_TYPE_CONNECTIONS_PERFORMANCE_IMPACT"
| "SIGNAL_TYPE_TMP_TABLES_PERFORMANCE_IMPACT"
| "SIGNAL_TYPE_TRANS_LOGS_PERFORMANCE_IMPACT"
| "SIGNAL_TYPE_HIGH_JOINS_WITHOUT_INDEXES";