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https://issues.apache.org/jira/browse/CASSANDRA-5313?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ahmet AKYOL updated CASSANDRA-5313:
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Summary: provide a cardinality function for collection types ( CQL3 )
(was: add a cardinality function for collection types ( CQL3 ))
> provide a cardinality function for collection types ( CQL3 )
> ------------------------------------------------------------
>
> Key: CASSANDRA-5313
> URL: https://issues.apache.org/jira/browse/CASSANDRA-5313
> Project: Cassandra
> Issue Type: Improvement
> Reporter: Ahmet AKYOL
> Labels: cql3, ponies
>
> Currently , cql3 doesn't provide a cardinality function for collection types.
> It'll be great to have one:
> {code}
> select content, cardinality(like_set),cardinality(dislike_set) from comments
> where id=?;
> {code}
> or size as keyword
> {code}
> select content, size(like_set),size(dislike_set) from comments where id=?;
> {code}
> Something similar in SQL is [cardinality of nested
> tables|http://www.techonthenet.com/oracle/functions/cardinality.php] .
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