[ https://issues.apache.org/jira/browse/ARROW-11259?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17408467#comment-17408467 ]
Neal Richardson commented on ARROW-11259: ----------------------------------------- Agree that it would be helpful (possibly necessary) to be able to extract a field from an Expression more generally. > [Python] Allow to create field reference to nested field > -------------------------------------------------------- > > Key: ARROW-11259 > URL: https://issues.apache.org/jira/browse/ARROW-11259 > Project: Apache Arrow > Issue Type: Improvement > Components: Python > Reporter: Joris Van den Bossche > Priority: Major > Labels: dataset, pull-request-available > Fix For: 6.0.0 > > Time Spent: 1h 10m > Remaining Estimate: 0h > > Currently in the Python layer we have {{ds.field(name)}} for referencing a > field eg when creating a filter expression. > On the C++ side, the {{FieldRef}} has the ability to reference nested fields > (eg a child of a struct), for example constructed with > {{FieldRef::FromDotPath}}. > We should think about how to enable users to reference nested fields like > this in the Python API. -- This message was sent by Atlassian Jira (v8.3.4#803005)