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https://issues.apache.org/jira/browse/CASSANDRA-7396?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16022496#comment-16022496
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Benjamin Lerer commented on CASSANDRA-7396:
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bq. {{WRITETIME()}} + {{TTL()}} don’t work with element/slice selections, but
UDFs + CAST do work with element/slice selections.
This will require some significant refactoring to the {{Selector}} classes as
well as to the {{Selection}} and {{ResultSetBuilder}} classes. Due to that I
think it is best to do that improvement within CASSANDRA-8877.
I have pushed a new version of the patch
[here|https://github.com/apache/cassandra/compare/trunk...blerer:7396-trunk] to
fix the remaining issues. I ran the tests on our internal CI and the results
look good.
I renamed {{isTerminal}} to {{areAllFetchedColumnsKnown}} as the original name
was misleading. If we have a query like: {{SELECT m\['1'\] + ? FROM myTable}}
we do not need to have all the parameters bound to build the {{ColumnFilter}}.
> Allow selecting Map key, List index
> -----------------------------------
>
> Key: CASSANDRA-7396
> URL: https://issues.apache.org/jira/browse/CASSANDRA-7396
> Project: Cassandra
> Issue Type: New Feature
> Components: CQL
> Reporter: Jonathan Ellis
> Assignee: Sylvain Lebresne
> Labels: cql, docs-impacting
> Fix For: 4.x
>
> Attachments: 7396_unit_tests.txt
>
>
> Allow "SELECT map['key]" and "SELECT list[index]." (Selecting a UDT subfield
> is already supported.)
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