Description
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.
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CRAN Check Status
3
NOTE
11
OK
Show all 14 flavors
| Flavor | Status |
|---|---|
| r-devel-linux-x86_64-debian-clang | OK |
| r-devel-linux-x86_64-debian-gcc | OK |
| r-devel-linux-x86_64-fedora-clang | OK |
| r-devel-linux-x86_64-fedora-gcc | OK |
| r-devel-macos-arm64 | OK |
| r-devel-windows-x86_64 | OK |
| r-oldrel-macos-arm64 | NOTE |
| r-oldrel-macos-x86_64 | NOTE |
| r-oldrel-windows-x86_64 | NOTE |
| r-patched-linux-x86_64 | OK |
| r-release-linux-x86_64 | OK |
| r-release-macos-arm64 | OK |
| r-release-macos-x86_64 | OK |
| r-release-windows-x86_64 | OK |
Check details (17 non-OK)
OK
r-devel-linux-x86_64-debian-clang
*
OK
r-devel-linux-x86_64-debian-gcc
*
OK
r-devel-linux-x86_64-fedora-clang
*
OK
r-devel-linux-x86_64-fedora-gcc
*
OK
r-devel-macos-arm64
*
OK
r-devel-windows-x86_64
*
NOTE
r-oldrel-macos-arm64
Rd cross-references
Package unavailable to check Rd xrefs: ‘polars’
NOTE
r-oldrel-macos-arm64
package dependencies
Package suggested but not available for checking: ‘polars’
NOTE
r-oldrel-macos-x86_64
Rd cross-references
Package unavailable to check Rd xrefs: ‘polars’
NOTE
r-oldrel-macos-x86_64
package dependencies
Package suggested but not available for checking: ‘polars’
NOTE
r-oldrel-windows-x86_64
Rd cross-references
Package unavailable to check Rd xrefs: 'polars'
NOTE
r-oldrel-windows-x86_64
package dependencies
Package suggested but not available for checking: 'polars'
OK
r-patched-linux-x86_64
*
OK
r-release-linux-x86_64
*
OK
r-release-macos-arm64
*
OK
r-release-macos-x86_64
*
OK
r-release-windows-x86_64
*
Check History
NOTE 11 OK · 3 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE Mar 9, 2026
NOTE
r-oldrel-macos-arm64
package dependencies
Package suggested but not available for checking: ‘polars’
NOTE
r-oldrel-macos-x86_64
package dependencies
Package suggested but not available for checking: ‘polars’
NOTE
r-oldrel-windows-x86_64
package dependencies
Package suggested but not available for checking: 'polars'
Reverse Dependencies (2)
Dependency Network
Version History
new
0.7.1
Mar 9, 2026