Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

statistics: mark NDV as deprecated and update variable scopes (#18318) #18321

Merged
merged 2 commits into from
Aug 7, 2024
Merged

statistics: mark NDV as deprecated and update variable scopes (#18318) #18321

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
2bc6b77
This is an automated cherry-pick of #18318
Oreoxmt Aug 7, 2024
9381ef1
resolve conflicts
Oreoxmt Aug 7, 2024
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
2 changes: 1 addition & 1 deletion statistics.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -613,7 +613,7 @@ SHOW STATS_BUCKETS [ShowLikeOrWhere];
| repeats | 最大值出现的次数 |
| lower_bound | 最小值 |
| upper_bound | 最大值 |
| ndv | 当前桶内不同值的个数。当 `tidb_analyze_version` = 1 时，该值恒为 0，没有实际意义。 |
| Ndv | 桶中不同值的数量。该字段已废弃，其值由于不准确会始终显示为 `0`。 |

### Top-N 信息

Expand Down
2 changes: 1 addition & 1 deletion system-variables.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -966,7 +966,7 @@ MPP 是 TiFlash 引擎提供的分布式计算框架，允许节点之间的数

### `tidb_analyze_distsql_scan_concurrency` <span class="version-mark">从 v7.6.0 版本开始引入</span>

- 作用域：GLOBAL
- 作用域：SESSION | 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
Expand Down
Loading