This Week in Databend #76
January 11, 2023 · 3 min read
PsiACE
Databend is a powerful cloud data warehouse. Built for elasticity and efficiency. Free and open. Also available in the cloud: .
Databend is a powerful cloud data warehouse. Built for elasticity and efficiency. Free and open. Also available in the cloud: https://app.databend.com .
What's New
Check out what we've done this week to make Databend even better for you.
Features & Improvements ✨
Meta
- add reader-min-msg-ver and msg-min-reader-ver in proto-conv (#9535)
Planner
Query
- efficiently memory two level group by in standalone mode (#9504)
Storage
Code Refactoring 🎉
Expression
Functions
- replace h3ron to h3o (#9553)
Format
Query
- use ctx to store the function evaluation error (#9501)
- refactor map access to support view read tuple inner (#9516)
Storage
- bump opendal for streaming read support (#9503)
- refactor bloom index to use vectorized siphash function (#9542)
Bug Fixes 🔧
HashTable
- fix memory leak for unsized hash table (#9551)
Storage
- fix row group stats collection (#9537)
What's On In Databend
Stay connected with the latest news about Databend.
New Year, New Expression!
We're so thrilled to tell you that Databend now fully works with New Expression after more than a half year of dedicated work. New Expression introduces a formal type system to Databend and supports type-safe downward casting , making the definition of functions easier.
New Expression is still being tuned, and a new version (v0.9) of Databend will be released once the tuning work is complete.
Learn More
What's Up Next
We're always open to cutting-edge technologies and innovative ideas. You're more than welcome to join the community and bring them to Databend.
UNNEST
Function
The UNNEST function takes an array as a parameter, and returns a table containing each element of the array in a row.
Syntax
UNNEST(ARRAY) [WITH OFFSET]
If you're interested in becoming a contributor, helping us develop the UNNEST
function would be a good start.
Issue 9549: Feature: Support unnest
Please let us know if you're interested in contributing to this issue, or pick up a good first issue at https://link.databend.rs/i-m-feeling-lucky to get started.
Changelog
You can check the changelog of Databend Nightly for details about our latest developments.
We're gearing up for the v0.9 release of Databend. Stay tuned.
Contributors
Thanks a lot to the contributors for their excellent work this week.
andylokandy | ariesdevil | b41sh | BohuTANG | ClSlaid | dantengsky |
dependabot[bot] | drmingdrmer | everpcpc | flaneur2020 | leiysky | mergify[bot] |
PsiACE | RinChanNOWWW | soyeric128 | sundy-li | TCeason | wubx |
Xuanwo | xudong963 | youngsofun | zhang2014 |
🎈Connect With Us
Databend is a cutting-edge, open-source cloud-native warehouse built with Rust, designed to handle massive-scale analytics.
Join the Databend Community to try, get help, and contribute!