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*: add tidb_auto_analyze_concurrency #18651

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*: add tidb_auto_analyze_concurrency #18651

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10 changes: 10 additions & 0 deletions system-variables.md
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Expand Up @@ -1052,6 +1052,16 @@ mysql> SELECT job_info FROM mysql.analyze_jobs ORDER BY end_time DESC LIMIT 1;
1 row in set (0.00 sec)
```

### tidb_auto_analyze_concurrency

- 作用域：GLOBAL
- 是否持久化到集群：是
- 是否受 Hint [SET_VAR](/optimizer-hints.md#set_varvar_namevar_value) 控制：否
- 类型：整数型
- 默认值：`2`
- 范围：`[1, 2147483647]`
- 这个变量用来设置执行自动 ANALYZE 时的并发度。

### `tidb_auto_analyze_end_time`

- 作用域：GLOBAL
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