---
title: Databend 开源周报第 78 期
description: Databend Docker 映像现在支持设置 MinIO 存储和配置外置 AWS S3 存储。现在你可以轻松使用该映像达成与 Databend 的初体验。另外，Databend 还计划在今年支持向量搜索以提供更丰富的能力。
slug: category-weekly/databend-weekly-78
date: 2023-01-30
tags: [weekly]
category: Weekly

image: databend-weekly.png
authors:
  - DatabendLabs
---

# Databend 开源周报 第 78 期

> 英文版移步：https://www.databend.com/blog/2023-01-25-databend-weekly
>
> [Databend](https://github.com/databendlabs/databend) 是一款强大的云数仓。专为弹性和高效设计。自由且开源。即刻体验云服务：[https://app.databend.cn](https://app.databend.cn) 。

{/* truncate */}

## What's New

探索 Databend 本周新进展，遇到更贴近你心意的 Databend。

### Features & Improvements :sparkles:

**SQL**

- 消除多余的 group by 标量 ([#9708](https://github.com/databendlabs/databend/pull/9708))

**Query**

- 支持对 insert/delete/optimize 行为进行权限检查 ([#9664](https://github.com/databendlabs/databend/pull/9664))
- 启用空投影 ([#9675](https://github.com/databendlabs/databend/pull/9675))
- 在最终聚合阶段增加聚合限制 ([#9716](https://github.com/databendlabs/databend/pull/9716))
- create/alter view 语句中支持可选列名 ([#9715](https://github.com/databendlabs/databend/pull/9715))

**Storage**

- 为原生存储格式增加 prewhere 支持 ([#9600](https://github.com/databendlabs/databend/pull/9600))

### Code Refactoring :tada:

**IO**

- 将 io 相关的常量移动到 `common/io` ([#9700](https://github.com/databendlabs/databend/pull/9700))
- 重构 `fuse/io/read` ([#9711](https://github.com/databendlabs/databend/pull/9711))

**Planner**

- `Scalar` 重命名为 `ScalarExpr` ([#9665](https://github.com/databendlabs/databend/pull/9665))

**Storage**

- 重构缓存层 ([#9672](https://github.com/databendlabs/databend/pull/9672))
- `pruner.rs` -> `fuse_bloom_pruner.rs` ([#9710](https://github.com/databendlabs/databend/pull/9710))
- 将 pruner 从分层改成链式 ([#9714](https://github.com/databendlabs/databend/pull/9714))

### Build/Testing/CI Infra Changes :electric_plug:

- 支持为 Docker 映像设置 minio 存储以及外置 s3 存储 ([#9676](https://github.com/databendlabs/databend/pull/9676))

### Bug Fixes :wrench:

**Expression**

- 修复 `simple_cast` ([#9671](https://github.com/databendlabs/databend/pull/9671))

**Query**

- 修复 `efficiently_memory_final_aggregator` 结果不稳定的问题 ([#9685](https://github.com/databendlabs/databend/pull/9685))
- 修复 `max_result_rows` 只对输出结果数进行限制的问题 ([#9661](https://github.com/databendlabs/databend/pull/9661))
- 修复 two level aggregator 可能会导致查询挂起的问题 ([#9694](https://github.com/databendlabs/databend/pull/9694))

**Storage**

- 如果没有根据 output schema 排序，则可能获得错误的 datablocks ([#9470](https://github.com/databendlabs/databend/pull/9470))
- bloom filter 使用了不正确的 cache key ([#9706](https://github.com/databendlabs/databend/pull/9706))

## What's On In Databend

请持续关注 Databend 的最新动态。

### Databend 多合一 Docker 映像

Databend Docker 映像现在支持设置 MinIO 存储和配置外置 AWS S3 存储。

现在你可以轻松使用该映像达成与 Databend 的初体验。

**运行，使用 MinIO 存储后端**

```bash
docker run \
    -p 8000:8000 \
    -p 9000:9000 \
    -e MINIO_ENABLED=true \
    databendlabs/databend
```

**运行，使用自定义配置**

```bash
docker run \
    -p 8000:8000 \
    -e DATABEND_QUERY_CONFIG_FILE=/etc/databend/mine.toml \
    -v query_config_file:/etc/databend/mine.toml \
    databendlabs/databend
```

**阅读下述材料以了解更多讯息**

- [PR | ci: support setup minio storage & external s3 storage in docker image](https://github.com/databendlabs/databend/pull/9676)
- [Docker Hub | Databend All-in-One Docker Image](https://hub.docker.com/r/datafuselabs/databend)

## What's Up Next

我们始终对前沿技术和创新理念持开放态度，欢迎您加入社区，为 Databend 注入活力。

### 向量搜索

向量搜索（Vector Search）可以捕获非结构化数据的含义和上下文，通常用于文本和图像的处理，允许通过语义来检索相似结果，并且往往能够比传统的关键字检索取得更好的效果。

Databend 计划支持向量搜索，为用户提供更丰富和高效的查询手段，初步的解决方案可能包括集成 Faiss Index。

[Issue 9699: feat: vector search (Faiss index)](https://github.com/databendlabs/databend/issues/9699)

如果你对这个主题感兴趣，可以尝试解决其中的部分问题或者参与讨论和 PR review。或者，你可以点击 https://link.databend.com/i-m-feeling-lucky 来挑选一个随机问题，祝好运！

## Changelogs

前往查看 Databend 每日构建的变更日志，以了解开发的最新动态。

地址：https://github.com/databendlabs/databend/releases

## Contributors

非常感谢贡献者们在本周的卓越工作。

| [<img alt="andylokandy" src="https://avatars.githubusercontent.com/u/9637710?v=4&s=117" width="117" />](https://github.com/andylokandy) | [<img alt="ariesdevil" src="https://avatars.githubusercontent.com/u/7812909?v=4&s=117" width="117" />](https://github.com/ariesdevil) | [<img alt="b41sh" src="https://avatars.githubusercontent.com/u/1070352?v=4&s=117" width="117" />](https://github.com/b41sh) | [<img alt="BohuTANG" src="https://avatars.githubusercontent.com/u/172204?v=4&s=117" width="117" />](https://github.com/BohuTANG) | [<img alt="dantengsky" src="https://avatars.githubusercontent.com/u/22081156?v=4&s=117" width="117" />](https://github.com/dantengsky) | [<img alt="dependabot[bot]" src="https://avatars.githubusercontent.com/in/29110?v=4&s=117" width="117" />](https://github.com/apps/dependabot) |
| :-------------------------------------------------------------------------------------------------------------------------------------: | :-----------------------------------------------------------------------------------------------------------------------------------: | :-------------------------------------------------------------------------------------------------------------------------: | :------------------------------------------------------------------------------------------------------------------------------: | :------------------------------------------------------------------------------------------------------------------------------------: | :--------------------------------------------------------------------------------------------------------------------------------------------: |
|                                              [andylokandy](https://github.com/andylokandy)                                              |                                              [ariesdevil](https://github.com/ariesdevil)                                              |                                              [b41sh](https://github.com/b41sh)                                              |                                             [BohuTANG](https://github.com/BohuTANG)                                              |                                              [dantengsky](https://github.com/dantengsky)                                               |                                             [dependabot[bot]](https://github.com/apps/dependabot)                                              |

| [<img alt="everpcpc" src="https://avatars.githubusercontent.com/u/1808802?v=4&s=117" width="117" />](https://github.com/everpcpc) | [<img alt="flaneur2020" src="https://avatars.githubusercontent.com/u/129800?v=4&s=117" width="117" />](https://github.com/flaneur2020) | [<img alt="johnhaxx7" src="https://avatars.githubusercontent.com/u/12479235?v=4&s=117" width="117" />](https://github.com/johnhaxx7) | [<img alt="leiysky" src="https://avatars.githubusercontent.com/u/22445410?v=4&s=117" width="117" />](https://github.com/leiysky) | [<img alt="mergify[bot]" src="https://avatars.githubusercontent.com/in/10562?v=4&s=117" width="117" />](https://github.com/apps/mergify) | [<img alt="PsiACE" src="https://avatars.githubusercontent.com/u/36896360?v=4&s=117" width="117" />](https://github.com/PsiACE) |
| :-------------------------------------------------------------------------------------------------------------------------------: | :------------------------------------------------------------------------------------------------------------------------------------: | :----------------------------------------------------------------------------------------------------------------------------------: | :------------------------------------------------------------------------------------------------------------------------------: | :--------------------------------------------------------------------------------------------------------------------------------------: | :----------------------------------------------------------------------------------------------------------------------------: |
|                                              [everpcpc](https://github.com/everpcpc)                                              |                                             [flaneur2020](https://github.com/flaneur2020)                                              |                                              [johnhaxx7](https://github.com/johnhaxx7)                                               |                                              [leiysky](https://github.com/leiysky)                                               |                                             [mergify[bot]](https://github.com/apps/mergify)                                              |                                              [PsiACE](https://github.com/PsiACE)                                               |

| [<img alt="RinChanNOWWW" src="https://avatars.githubusercontent.com/u/33975039?v=4&s=117" width="117" />](https://github.com/RinChanNOWWW) | [<img alt="sandflee" src="https://avatars.githubusercontent.com/u/5102100?v=4&s=117" width="117" />](https://github.com/sandflee) | [<img alt="sundy-li" src="https://avatars.githubusercontent.com/u/3325189?v=4&s=117" width="117" />](https://github.com/sundy-li) | [<img alt="xudong963" src="https://avatars.githubusercontent.com/u/41979257?v=4&s=117" width="117" />](https://github.com/xudong963) | [<img alt="zhang2014" src="https://avatars.githubusercontent.com/u/8087042?v=4&s=117" width="117" />](https://github.com/zhang2014) | [<img alt="zhyass" src="https://avatars.githubusercontent.com/u/34016424?v=4&s=117" width="117" />](https://github.com/zhyass) |
| :----------------------------------------------------------------------------------------------------------------------------------------: | :-------------------------------------------------------------------------------------------------------------------------------: | :-------------------------------------------------------------------------------------------------------------------------------: | :----------------------------------------------------------------------------------------------------------------------------------: | :---------------------------------------------------------------------------------------------------------------------------------: | :----------------------------------------------------------------------------------------------------------------------------: |
|                                              [RinChanNOWWW](https://github.com/RinChanNOWWW)                                               |                                              [sandflee](https://github.com/sandflee)                                              |                                              [sundy-li](https://github.com/sundy-li)                                              |                                              [xudong963](https://github.com/xudong963)                                               |                                              [zhang2014](https://github.com/zhang2014)                                              |                                              [zhyass](https://github.com/zhyass)                                               |

## Connect With Us

Databend 是一款开源、弹性、低成本，基于对象存储也可以做实时分析的新式数仓。期待您的关注，一起探索云原生数仓解决方案，打造新一代开源 Data Cloud。

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