Tim Sehn

April 29, 2020

Dolt is a SQL database with Git-style versioning. DoltHub is a place to share Dolt repositories. Dolt is Git for data. DoltHub is GitHub for Dolt. We want to host your public data on DoltHub. We think Dolt and DoltHub provide the best sharing ...

Oscar Batori

April 27, 2020

Background While building Dolt and DoltHub, we have had many conversations with our users. They all share an interest in finding better ways to manage data. They recognize that writing code to massage CSV, JSON, and other less well known form...

Zach Musgrave

April 24, 2020

Dolt is Git for data. It's a database that lets you clone, fork, branch, merge and diff. This is a really cool technology that has a lot of uses , but today we're going to focus on just one: using Dolt SQL to find regressions in test resul...

Andy Arthur

April 22, 2020

TLDR: The NVD is a lot more useful when you can simply clone it and query it. The National Vulnerability Database (NVD) is the authoritative source for the publication of Common Vulnerabilities and Exposures (CVE). The vulnerabilities cata...

Zach Musgrave

April 20, 2020

Happy 4/20! Today is April 20th, the unofficial holiday of marijuana afficionados the world over. Happy 4/20! Or, as we in the data business like to say, Happy 20%! Recreational marijuana has been legal...

Katie McCulloch

April 17, 2020

Dolt is to DoltHub as Git is to GitHub - except with Dolt, the unit of versioning is SQL tables. Dolt also has Git-like semantics such as pull, branch and merge. By running dolt pull in a Dolt repository, you know you are getting the most u...

Daylon Wilkins

April 15, 2020

UPDATED FEBRUARY 10, 2021: Updated the final table with the types that have been added to Dolt since the article was first written. When we started on Dolt , our goal was to apply Git's idea of versioning to data. Whereas Git versions file...

Taylor Bantle

April 13, 2020

As COVID-19 continues to affect the lives of millions of people around the world, having the most recent and accurate information is an increasingly important tool to help combat the disease. We've been tracking COVID-19 cases for a few months i...

Tim Sehn

April 10, 2020

Dolt is a SQL database with Git-style versioning. In Git the unit of versioning is files. In Dolt, the unit of versioning is SQL tables. Dolt will eventually support 100% of the Git command line and 100% of MySQL SQL. Moreover, anything you can d...

Matt Jesuele

April 8, 2020

Dolt and DoltHub are Git and GitHub for data . The same way that GitHub enables collaboration on source code repositories in Git format, DoltHub enables collaboration on data repositories in Dolt format. A very common workflow on GitHub i...

Dustin Brown

April 6, 2020

Tracking Dolt's SQL regressions As part of our journey to make Dolt a great SQL database, we set out to track the correctness of Dolt’s SQL engine against a suite of SQL tests called the sqllogictests . These tests are what we use to measur...

Dustin Brown

April 3, 2020

TL;DR Dolt is a SQL database with built-in Git versioning, branching, and distribution semantics that makes collaborating on and distributing data effortless. What Git does for files, Dolt does for data. Where Git versions files, a...

Aaron Son

April 1, 2020

Dolt is Git for data . It's a SQL database that lets you clone, branch, diff, merge, and fork your data just like you can with a filesystem tree in Git. This blog post explores one of the fundamental datastructures that underlies Dolt's impleme...

Tim Sehn

March 30, 2020

Dolt is Git for data. Instead of versioning files, Dolt versions tables. DoltHub is a place on the internet to share Dolt repositories. As far as we can tell, Dolt is the only database with branches . How would you use such a thing? One o...

Zach Musgrave

March 27, 2020

Overview In this blog post, we discuss an approach for simulating an outbreak of COVID-19 in the US Congress. This is a long technical article about data sets, epidemiology, and simulation. Feel free to jump straight to the results of ...

Matt Jesuele

March 25, 2020

In the previous article in this series, we took a deep look at the overall system architecture of DoltHub , the online data community powered by the Dolt version-controlled database. In this article, we'll zoom in on the front end and see h...

Tim Sehn

March 23, 2020

We adopted Bash Automated Testing System (Bats) to test the Dolt command-line. As of March 10, 2020 we are up to 473 tests, though 55 are skipped because they currently fail. The tests define desired behavior so we're constantly working to ge...

Zach Musgrave

March 20, 2020

Dolt is Git for data . It's a SQL database that lets you branch, merge, and fork your data just like you would a Git repository. In previous blog posts we announced how you can use special system tables to query the history of your database ...

Tim Sehn

March 18, 2020

Here at DoltHub , we've been working on COVID-19 data since February 5, 2020. First, we started importing John Hopkins data and then we worked on assembling the largest open, regularly-updated set of case details from Singapore, Hong Kong an...

Tim Sehn

March 16, 2020

As part of our effort to track data related to the Novel Coronavirus (COVID-19) , we wanted to scrape a JavaScript-enabled website on Coronavirus from Hong Kong . Moreover, you'll notice that the website from Hong Kong uses lazy loading based o...