List view

rolling functions give.names could accept character vector

enhancement

froll

Status: Open.

#5744 In Rdatatable/data.table;

· jangorecki opened on Nov 17, 2023

nafill, setnafill for character, factor and other types

feature request

top requestOne of our most-requested issuesOne of our most-requested issues

Status: Open.

#3992 In Rdatatable/data.table;

· mik3y64 opened on Oct 25, 2019

Refactor cedta() for readability

Status: Open (in progress).

Rdatatable/data.tablenumber 7162

#7162 In Rdatatable/data.table;

· MichaelChirico opened on Jul 11, 2025

shift give.names could apply auto-name logic to list() input

feature request

Status: Open.

#3905 In Rdatatable/data.table;

· MichaelChirico opened on Sep 23, 2019

context= parameter to test()

Status: Open (in progress).

Rdatatable/data.tablenumber 7201

#7201 In Rdatatable/data.table;

· MichaelChirico opened on Jul 22, 2025

Calculations with many groups are much slower by default than with setDTthreads(1)

openmp

Status: Open.

#4294 In Rdatatable/data.table;

· nhirschey opened on Mar 9, 2020

Join with NA can alter the type of the column

bug

High

joinsUse label:"non-equi joins" for rolling, overlapping, and non-equi joinsUse label:"non-equi joins" for rolling, overlapping, and non-equi joins

regression

Status: Open.

#4367 In Rdatatable/data.table;

· tdeenes opened on Apr 9, 2020

separate index attributes from index

High

internals

performance

question

Status: Open.

#4467 In Rdatatable/data.table;

· jangorecki opened on May 21, 2020

keepLeadingZeros interferes with date recognition

consistency

fread

Status: Open.

#4869 In Rdatatable/data.table;

· rmcd1024 opened on Jan 9, 2021

Passing named lists to <code>.SDcols</code> / <code>.SD</code>

programmingparameterizing queries: get, mget, eval, envparameterizing queries: get, mget, eval, env

top requestOne of our most-requested issuesOne of our most-requested issues

Status: Open.

#5020 In Rdatatable/data.table;

· grantmcdermott opened on May 21, 2021

<code>print.data.table</code> with <code>trunc.cols=TRUE</code> doesn't wrap the truncated column name list

enhancement

print

Status: Open.

#5034 In Rdatatable/data.table;

· ChristopherEeles opened on Jun 1, 2021

More tests detecting invalid index using selfrefok

tests

Status: Open.

#5085 In Rdatatable/data.table;

· mattdowle opened on Jul 28, 2021

review setDTthreads matching nth allocation

internals

Status: Open.

#5093 In Rdatatable/data.table;

· mattdowle opened on Aug 4, 2021

Rename .Rraw to just .R?

internals

tests

Status: Open.

#5830 In Rdatatable/data.table;

· MichaelChirico opened on Dec 15, 2023

[FR] Run clang-format on C files

code-qualityIssues related to improving code quality/readabilityIssues related to improving code quality/readability

internals

Status: Open.

#5982 In Rdatatable/data.table;

· SteveBronder opened on Mar 6, 2024

encoding-related test failures on Alpine Linux

encodingissues related to Encodingissues related to Encoding

Status: Open.

#6350 In Rdatatable/data.table;

· bastistician opened on Aug 3, 2024

ngettext() shouldn't be used to pluralize formally in some cases

translationissues/PRs related to message translation projectsissues/PRs related to message translation projects

Status: Open.

#6796 In Rdatatable/data.table;

· MichaelChirico opened on Feb 4, 2025

Reproducible segfault on setkey() in data.table 1.9.7 development version

bug

regression

Status: Open.

#1753 In Rdatatable/data.table;

· peterlittlejohn opened on Jun 23, 2016

export is.sorted

feature request

Status: Open.

#2325 In Rdatatable/data.table;

· franknarf1 opened on Aug 30, 2017

Assigning NA_real_ to multiple rows

consistency

Status: Open.

#2959 In Rdatatable/data.table;

· MichaelChirico opened on Jul 2, 2018

Overbroad issue about .. being defined in calling scope?

programmingparameterizing queries: get, mget, eval, envparameterizing queries: get, mget, eval, env

Status: Open.

#2988 In Rdatatable/data.table;

· MichaelChirico opened on Jul 31, 2018

Encourage Imports not Depends

breaking-changeissues whose solution would require breaking existing behaviorissues whose solution would require breaking existing behavior

Status: Open.

#3076 In Rdatatable/data.table;

· mattdowle opened on Sep 26, 2018

join operation almost 2 times slower

High

joinsUse label:"non-equi joins" for rolling, overlapping, and non-equi joinsUse label:"non-equi joins" for rolling, overlapping, and non-equi joins

performance

regression

Status: Open.

#3928 In Rdatatable/data.table;

· vk111 opened on Oct 2, 2019

Invalid .internal.selfref detected when a data.table is set as an attribute with setattr

by-referenceIssues related to by-reference/copying behaviorIssues related to by-reference/copying behavior

Status: Open.

#3959 In Rdatatable/data.table;

· d-sci opened on Oct 10, 2019

dt[, (cols) := list(...), by = group] should not silently recycles list

consistency

non-atomic columne.g. list columns, S4 vector columnse.g. list columns, S4 vector columns

Status: Open.

#4022 In Rdatatable/data.table;

· renkun-ken opened on Nov 2, 2019