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 a note display error #4699

Merged
merged 1 commit into from
Oct 16, 2020
Merged

Fix a note display error #4699

Changes from all commits
Commits
Show all changes
1 commit
Select commit
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 choose-index.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -23,7 +23,7 @@ aliases: ['/docs-cn/dev/choose-index/']
| IndexReader | 表有一个或多个索引，且计算所需的列被包含在索引里 | 存在较小的索引上的范围查询，或者对索引列有顺序需求的时候 | 当存在多个索引的时候，会根据估算代价选择合理的索引 |
| IndexLookupReader | 表有一个或多个索引，且计算所需的列**不完全**被包含在索引里 | 同 IndexReader | 因为计算列不完全被包含在索引里，所以读完索引后需要回表，这里会比 IndexReader 多一些开销 |

> 注意：
> **注意：**
>
> TableReader 是基于 `_tidb_rowid` 的索引，TiFlash 是列存索引，所以索引的选择即是读表算子的选择。

Expand Down