Description
This table shows warnings about the ClickHouse server. Warnings of the same type are combined into a single warning. For example, if the number N of attached databases exceeds a configurable threshold T, a single entry containing the current value N is shown instead of N separate entries. If current value drops below the threshold, the entry is removed from the table. The table can be configured with these settings:- max_table_num_to_warn
- max_database_num_to_warn
- max_dictionary_num_to_warn
- max_view_num_to_warn
- max_part_num_to_warn
- max_pending_mutations_to_warn
- max_pending_mutations_execution_time_to_warn
- max_named_collection_num_to_warn
- resource_overload_warnings
Columns
message(String) — A warning message issued by ClickHouse server.message_format_string(LowCardinality(String)) — A format string that was used to format the message.
Examples
Query
Response