R Observatory: Metrics for mlr3db version 0.7.2

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

mlr3db

0.7.2Package record

Data Base Backend for 'mlr3'

0packages dependsuggested by 2

32.6Kdownloads / year

67.0%test coverage

13/13flavors OK

Overview

About

Maintained by Marc BeckerCRAN page ↗GitHub ↗Website ↗Issues ↗

Extends the 'mlr3' package with a backend to transparently work with databases such as 'SQLite', 'DuckDB', 'MySQL', 'MariaDB', or 'PostgreSQL'. The package provides three additional backends: 'DataBackendDplyr' relies on the abstraction of package 'dbplyr' to interact with most DBMS. 'DataBackendDuckDB' operates on 'DuckDB' data bases and also on Apache Parquet files. 'DataBackendPolars' operates on 'Polars' data frames.

Changes in 0.7.2

compatibility: dplyr 2.6.0

From NEWS.md in the release

Install

R (CRAN)pak (dev)Ubuntu (r2u)Fedora (COPR)openSUSE (OBS)

install.packages("mlr3db", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("mlr-org/mlr3db")

Development version from mlr-org/mlr3db. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-mlr3db

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

bspm (used by r2u) also needs make: sudo apt install make

# enable the iucar/cran COPR if it is not already present, then install
ls /etc/yum.repos.d/*iucar*cran*.repo >/dev/null 2>&1 \
  || sudo dnf copr enable -y iucar/cran
sudo dnf install -y R-CRAN-mlr3db

RPMs from the iucar/cran COPR, rebuilt from CRAN.

For install.packages() integration in R, also: sudo dnf install R-CoprManager

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-mlr3db

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 2.9 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK12 OK2026-04-25
NOTE11 OK, 3 NOTE2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 0.7.2

READMEYes · 137 wordsVignettesNoNEWSYes · 100% structured · mentions 0.7.2Citation fileNoWebsiteYes · pkgdown

Help pages: 7includes a package overview page
Examples that run: 100%2 run in a plain check
Exported functions with examples: 33%
Documented parameters: 100%
Return-value docs: 50%
Help pages citing references: 0%

How these are measured

Downloads

32.6K

CRAN downloads in the past year

Rank #2,765 · ~89/day · ~2.7K/mo

Releases R versions

Daily download trend is not available in this view yet.

1.8K30 days

5.3K90 days

32.6K1 year

Compare downloads with other packages →

Also on127 r2u6 autocran

How downloads are counted

Repository

mlr-org/mlr3db ↗Organization: mlr-org

23Stars

2Forks

3Open issues

0Open PRs

13Releases

268Commits

9Commit identities

mlr3machine-learningdata-backenddatabasemariadbmysqlpostgresqlsqlite

License file reads as LGPL-3.0 · 268 commits · Last activity 2026-09-23 · 0% stars, 30d · Default branch at 0.7.2.9000, ahead of CRAN 0.7.2 (checked 2026-10-11)

Responsiveness

How these are sampled

PRs merged (all time): 88%
Median days to close, 50 most recently updated closed issues: 20
Median days to close, 50 most recently updated closed PRs: 0

Stars over time

2025-07-28 · 222026-08-23 · 23

How these are measured

PracticesBeta

16 development-tooling and community-health practices detected across 6 families in the upstream repository

Checks run against github.com/mlr-org/mlr3db on 2026-10-11.

Continuous integration (2)

GitHub ActionsR CMD check workflow

The R CMD check workflow runs on Linux, and on R-devel

Governance and community (3)

Contributing guide (inherited from mlr-org)

Funding links: GitHub Sponsors

The repository owner accepts GitHub Sponsors

Docs source (4)

README.Rmdpkgdown

GitHub Pages site last deployed 2026-09-23 · The repository has a site deploy workflow

pkgdown site last built 2026-06-11

Automation and maintenance (1)

Dependabot

Show all practicesHide 2 practices

Lint, format, editor (5)

lintrAirEditorConfigVS CodeRStudio project

Git structural (1)

blame-ignore revs

How this is detected·Detection ruleset v3 (2026-09-26)

AI coding toolsBeta

This repository shows signs of AI coding tools.

Claude Codefirst seen 2026-02-28
Seen in the repository: .claude, CLAUDE.md
Named in .Rbuildignore: .claude, CLAUDE.md
Named in .gitignore: .claude, CLAUDE.md
Pull request it wrote: opened by a project member
Commits: at least 6 crediting it in the message
Cursorfirst seen 2026-03-18
Named in .Rbuildignore: .cursor
Gemini CLIfirst seen 2026-03-18
Config: a file or ignore line, not recorded which
Codexfirst seen 2026-09-23
Seen in the repository: .codex
Named in .Rbuildignore: .codex

Shared conventions any agent may read, so they name no particular tool.

Seen in the repository: AGENTS.md

Models named in its commits

Claude Opus 4.62 commits · Mar 2026
Claude Fable 51 commit · Jun 2026
Claude Opus 4.71 commit · Apr 2026
Claude Opus 51 commit · Sep 2026

Counts are commits, not lines of code. Commits by a tool's accounts count once across all of its accounts. Commits crediting it are the largest count among its credit lines, a minimum.How this is detected·Detection ruleset v4 (updated 2026-09-27)

Dependencies

Declared dependencies

20 external dependencies (excludes base and recommended)

Installing mlr3db adds 24 packages (11 with compiled code, 16 MB of source tarballs). Heaviest: data.table 5.7 MB, palmerpenguins 2.9 MB, mlbench 967 KB.

Depends (2)

R >= 3.1.0mlr3

Imports (5)

backports checkmate data.table mlr3misc R6

LinkingTo (0)

none

Suggests (14)

DBI dbplyr dplyr duckdb future future.apply future.callr hms lgr polars RSQLite rlang testthat tibble

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Suggested by 2

Suggests, most downloaded first

mlr3verse mlr3oml

How these are counted

Code & Tests

People & History

People (3)

Marc Becker

Maintainer since 0.6.0 (2025), Author · added in 0.6.0

Lona Koers

Author · added in 0.6.0

Michel Lang

Author

Previously maintained by Michel Lang (0.1.1 to 0.5.2).

Releases (17)

Pick two releases to compare their code metrics.

0.7.2Latest
record
2026-05-22 · current release · diff ↗
R
R 4.6.0 released · 2026-04-24
0.7.1
record
2026-02-28 · diff ↗
0.7.0
record
2025-10-06 · diff ↗
0.6.0
record
2025-07-18 · diff ↗ ·
added 2 exports
DataBackendPolars, as_polars_backend
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
0.5.2
record
2023-11-04 · diff ↗
0.5.1
record
2023-10-17 · diff ↗
R
R 4.3.0 released · 2023-04-21
0.5.0
record
2022-08-08 · diff ↗
R
R 4.2.0 released · 2022-04-22
0.4.2
record
2021-11-17 · diff ↗
R
R 4.1.0 released · 2021-05-18
unarchivedReturned to CRAN
2021-04-13
0.4.1
record
2021-04-13 · diff ↗

Show 11 earlier eventsHide 11 earlier events

archivedRemoved from CRAN
2021-03-30
check problems were not corrected in time
0.4.0
record
2021-03-09 · diff ↗
0.3.0
record
2020-12-16 · diff ↗ ·
added 2 exports
DataBackendDuckDB, as_duckdb_backend
0.2.0
record
2020-09-28 · diff ↗
R
R 4.0.0 released · 2020-04-24
0.1.5
record
2020-02-19 · diff ↗
0.1.4
record
2020-02-05 · diff ↗
0.1.3
record
2019-10-29 · diff ↗
0.1.2
record
2019-08-26 · diff ↗ ·
removed 1 export
as_sqlite

added 1 export
as_sqlite_backend
0.1.1
record
2019-08-01
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-08-01
Total releases: 17 / 7 yrs
License: LGPL-3 OSI
Additional repositories: community.r-multiverse.org
Minimum R: ≥ 3.1.0
Download size: 488 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("mlr3db")

Format

Becker, M., Koers, L., & Lang, M. (2026). mlr3db: Data Base Backend for 'mlr3' (Version 0.7.2) [Computer software]. https://doi.org/10.32614/CRAN.package.mlr3db

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for mlr3db version 0.7.2 [Data set]. HJJB, LLC. Data release v2026-10-17. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-17, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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