Ahmet AKYOL created CASSANDRA-5313:
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Summary: add 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
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;
{code}
or size as keyword
{code}
select content, size(like_set),size(dislike_set) from comments;
{code}
Something similar in SQL is [cardinality of nested
tables|http://www.techonthenet.com/oracle/functions/cardinality.php] .
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