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Update system_tables.md

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alexey-milovidov 2019-12-03 01:44:32 +03:00 committed by GitHub
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docs/en/operations/system_tables.md
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@ -499,8 +499,8 @@ Columns:
- `read_bytes` (UInt64) — Number of read bytes.
- `written_rows` (UInt64) — For `INSERT` queries, the number of written rows. For other queries, the column value is 0.
- `written_bytes` (UInt64) — For `INSERT` queries, the number of written bytes. For other queries, the column value is 0.
- `memory_usage` (Int64) — Memory consumption by the whole query.
- `peak_memory_usage` (Int64) — Maximum memory consumption by the whole query.
- `memory_usage` (Int64) — The difference between the amount of allocated and freed memory in context of this thread.
- `peak_memory_usage` (Int64) — The maximum difference between the amount of allocated and freed memory in context of this thread.
- `thread_name` (String) — Name of the thread.
- `thread_number` (UInt32) — Internal thread ID.
- `os_thread_id` (Int32) — OS thread ID.