2020-06-22 08:45:22 +00:00
|
|
|
---
|
2022-08-26 19:07:59 +00:00
|
|
|
slug: /zh/operations/system-tables/merges
|
2020-06-22 08:45:22 +00:00
|
|
|
machine_translated: true
|
|
|
|
|
machine_translated_rev: 5decc73b5dc60054f19087d3690c4eb99446a6c3
|
|
|
|
|
---
|
|
|
|
|
|
|
|
|
|
# 系统。合并 {#system-merges}
|
|
|
|
|
|
|
|
|
|
包含有关MergeTree系列中表当前正在进行的合并和部件突变的信息。
|
|
|
|
|
|
|
|
|
|
列:
|
|
|
|
|
|
|
|
|
|
- `database` (String) — The name of the database the table is in.
|
|
|
|
|
- `table` (String) — Table name.
|
|
|
|
|
- `elapsed` (Float64) — The time elapsed (in seconds) since the merge started.
|
|
|
|
|
- `progress` (Float64) — The percentage of completed work from 0 to 1.
|
|
|
|
|
- `num_parts` (UInt64) — The number of pieces to be merged.
|
|
|
|
|
- `result_part_name` (String) — The name of the part that will be formed as the result of merging.
|
|
|
|
|
- `is_mutation` (UInt8)-1如果这个过程是一个部分突变.
|
|
|
|
|
- `total_size_bytes_compressed` (UInt64) — The total size of the compressed data in the merged chunks.
|
|
|
|
|
- `total_size_marks` (UInt64) — The total number of marks in the merged parts.
|
|
|
|
|
- `bytes_read_uncompressed` (UInt64) — Number of bytes read, uncompressed.
|
|
|
|
|
- `rows_read` (UInt64) — Number of rows read.
|
|
|
|
|
- `bytes_written_uncompressed` (UInt64) — Number of bytes written, uncompressed.
|
|
|
|
|
- `rows_written` (UInt64) — Number of rows written.
|
