[ https://issues.apache.org/jira/browse/ARROW-14288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Keane updated ARROW-14288: ----------------------------------- Fix Version/s: (was: 9.0.0) > [R] Implement nrow on some collapsed queries > -------------------------------------------- > > Key: ARROW-14288 > URL: https://issues.apache.org/jira/browse/ARROW-14288 > Project: Apache Arrow > Issue Type: Improvement > Components: R > Reporter: Neal Richardson > Priority: Major > > collapse() doesn't always mean we can't determine the number of rows. We can > try to solve some cases: > * head/tail: compute number of rows, take the smaller of that and the > head/tail number > * if filter == TRUE, take the number of rows of .data (which may contain a > query) -- This message was sent by Atlassian Jira (v8.20.10#820010)