- REFERENCE9 min read
So you want Database Versioning?
Here at DoltHub, we've had a lot of success with our "So you want..." series of blog posts helping people find Dolt when they are looking for it. Dolt is a lot of things. Dolt is a version controlled database, a Git database, Git for data, data…
Read More
- PYTHON2 min read
Mypy and Doltpy
Dolt Dolt is an SQL-database with Git-versioning. The goal of Doltpy , in concert with Dolt , is to solve reproducibility and versioning problems for data and machine learning engineers using Python. Mypy Mypy was created by Guid...
Read More - SQL3 min read
Dolt CLI in SQL - Update
Dolt is a SQL database with Git-style versioning. In a previous post we discussed the need to introduce Dolt CLI functions in SQL. We believe that version control is something that can be native to your SQL workflow. This allows for possibilit...
Read More - BOUNTY2 min read
US Presidential Election $25,000 Database Bounty Review
On December 14, we launched our first data bounty to earn a share of $25,000 by wrangling US Presidential Precinct-level data . The bounty ended yesterday. How did it go? This blog entry will answer that question. Dolt is a SQL database w...
Read More - PYTHON7 min read
Doltpy 2.0
Background Earlier in the week we talked about Dolt's "API surface area." To recap, Dolt is a relational database with version control features. Dolt has a SQL query interface implementing the MySQL dialect, as well as a command line inter...
Read More - FEATURE RELEASESQL6 min read
Introducing Type Changes
Dolt is a SQL database with Git-style versioning. With each new version of Dolt , we increase the number of supported SQL features, moving toward our goal of being a complete drop-in replacement for MySQL, while adding all of the versioning fe...
Read More - 8 min read
Part I: Dolt API Surface Area
Background When DoltHub was founded it was called Liquidata. The goal was to bring liquidity to the data market. The founders realized that the pipes were broken: sending around CSV, JSON, and other formats was broken. The requirement to tran...
Read More - WEB11 min read
A Guide to Unit Testing React Apollo Components
DoltHub is a place on the internet to share, discover, and collaborate on Dolt databases. It's a Next.js application written in Typescript, backed by a GraphQL server that calls gRPC services written in Golang. We use Apollo 's buil...
Read More - 5 min read
Dolt vs MySQL: How it Started, How it's Going
How it Started For those following along, we've been working on improving Dolt's performance with the goal of making Dolt no more than 2-4 times slower than MySQL . When we set out to measure Dolt's performance we chose Sysbench , a wi...
Read More - DATASET1 min read
January Dataset Spotlight
It's that time. Our January dataset spotlight here at DoltHub . For the new folks, Dolt is a SQL database with git-like versioning and DoltHub is a place on the internet to share Dolt databases. This monthly feature keeps you updated on Data...
Read More - FEATURE RELEASEWEB2 min read
Announcing DoltHub Issues
DoltHub is a place on the internet to share and collaborate on Dolt databases. We built DoltHub because we thought it would be useful to interact with versioned SQL databases in familiar ways. For example, query public data on the web, or c...
Read More - 2 min read
More Hiring
In October, we set out to hire more engineers to work on Dolt and DoltHub . Dolt is a SQL database with Git-like versioning and DoltHub is a place to share Dolt repositories. Since then, we added three engineers: Vinai , Remy , and Ma...
Read More - 5 min read
Release notes generation for GitHub repos
Introduction Today we're excited to announce the open sourcing of a tool to automatically generate markdown formatted release notes for GitHub repositories . Dolt is using this tool to generate our release notes going forward, and we've ...
Read More - USE CASE5 min read
Dolt and Data Science - A Simple Example
Dolt is Git for data, a SQL database with version control. We've been working hard recently on making Dolt a useful tool for Data Science (DS) practitioners and we're hoping to launch some slick integrations soon. But first, we wanted to start...
Read More - WEB5 min read
Managing DoltHub Dependencies
Dolt is Git for data and DoltHub is our web application that houses Dolt repositories. DoltHub consists of three separate React applications: our main Next.js app, as well as two Gatsby apps for our blog and documentation. Our depe...
Read More - 3 min read
Performance Benchmarks on Pull Request
Overview Not long ago we wrote about measuring Dolt's performance against MySQL with the goal of improving Dolt to be no more than 2-4 times slower than MySQL . To work toward this goal, we created a containerized tool that benchma...
Read More - BOUNTY2 min read
Hospital Price Transparency $10,000 Database Bounty
On January 1, 2021, a US law was passed requiring hospitals to publish their prices in human and machine readable format. We would like to assemble the best open dataset of hospital prices in the US to aid researchers. To this end, we’re launchi...
Read More - WEB7 min read
Supporting Larger File Imports on DoltHub
Introduction Back in November, we announced support for uploading CSV files on DoltHub directly to Dolt repository commits. Since then, we've been quickly iterating on features for upload on the web. We recently released changes to our ...
Read More - GOLANG10 min read
Optimizing varint Decoding
Introduction Dolt stores data in a content addressable prolly tree in order to get efficient merges and diffs. In designing the table data format one of our goals was to make table column additions and deletions fast operations. They sho...
Read More - DATASET21 min read
Pennsylvania ballot data revisited
Introduction In November, shortly after the election, we published an analysis of Pennsylvania ballot data provided by the Pennsylvania Department of State. The purpose of the analysis was to determine if there was any truth to claims of…
Read More - DATASET2 min read
December Dataset Spotlight
We have been running the DoltHub dataset spotlight since May 2020. This is our eighth issue. The intent was to add additional exposure to Dolt datasets published on DoltHub. Publishing this blog monthly has presented some challenges conten...
Read More