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

fix typos in FAQ #12803

Merged
merged 2 commits into from
Jan 30, 2023
Merged

fix typos in FAQ #12803

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
3c5920b
fix a typo in faq
Oreoxmt Jan 28, 2023
b3fab56
refine writing style
Oreoxmt Jan 28, 2023
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
4 changes: 2 additions & 2 deletions faq/migration-tidb-faq.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -165,9 +165,9 @@ DELETE，TRUNCATE 和 DROP 都不会立即释放空间。对于 TRUNCATE 和 DRO

支持。

### 数据删除后查询速度为何会变慢？
### 删除数据后查询速度为何会变慢？

大量删除数据后，会有很多无用的 key 存在，影响查询效率。目前正在开发 Region Merge 功能，完善之后可以解决这个问题，具体看参考[最佳实践](https://pingcap.com/blog-cn/tidb-best-practice/)中的删除数据部分。
删除大量数据后，会有很多无用的 key 存在，影响查询效率。要解决该问题，可以尝试开启 [Region Merge](/best-practices/massive-regions-best-practices.md#方法五开启-region-merge) 功能，具体可参考[最佳实践](https://pingcap.com/blog-cn/tidb-best-practice/)中的删除数据部分。

### 数据删除最高效最快的方式？

Expand Down
2 changes: 1 addition & 1 deletion faq/sql-faq.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -183,7 +183,7 @@ TiDB 支持在会话或全局作用域上修改 [`sql_mode`](/system-variables.m

## 删除数据后查询速度为何会变慢？

删除大量数据后，会有很多无用的 key 存在，影响查询效率。要解决该问题，可以尝试开启 [Region Merge](/best-practices/massive-regions-best-practices.md#方法五开启-region-merge) 功能，具体看参考[最佳实践](https://pingcap.com/blog-cn/tidb-best-practice/)中的删除数据部分。
删除大量数据后，会有很多无用的 key 存在，影响查询效率。要解决该问题，可以尝试开启 [Region Merge](/best-practices/massive-regions-best-practices.md#方法五开启-region-merge) 功能，具体可参考[最佳实践](https://pingcap.com/blog-cn/tidb-best-practice/)中的删除数据部分。

## 对数据做删除操作之后，空间回收比较慢，如何处理？

Expand Down