columns format version: 1
23 columns:
`query_id` String
`event_type` Enum8('NewPart' = 1, 'MergeParts' = 2, 'DownloadPart' = 3, 'RemovePart' = 4, 'MutatePart' = 5, 'MovePart' = 6)
`merge_reason` Enum8('NotAMerge' = 1, 'RegularMerge' = 2, 'TTLDeleteMerge' = 3, 'TTLRecompressMerge' = 4)
`event_date` Date
`event_time` DateTime
`event_time_microseconds` DateTime64(6)
`duration_ms` UInt64
`database` String
`table` String
`part_name` String
`partition_id` String
`part_type` String
`disk_name` String
`path_on_disk` String
`rows` UInt64
`size_in_bytes` UInt64
`merged_from` Array(String)
`bytes_uncompressed` UInt64
`read_rows` UInt64
`read_bytes` UInt64
`peak_memory_usage` UInt64
`error` UInt16
`exception` String
