Sylvain Lebresne created CASSANDRA-7248:
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Summary: Tuple type
Key: CASSANDRA-7248
URL: https://issues.apache.org/jira/browse/CASSANDRA-7248
Project: Cassandra
Issue Type: Bug
Reporter: Sylvain Lebresne
Assignee: Sylvain Lebresne
Fix For: 2.1 rc1
For CASSANDRA-6875 we need to be able to talk about tuples values and types
(for prepared variables). Since we need it there, clients will need to support
them anyway and so I think it would be a lot cleaner to start supporting those
more generally. Besides, having tuples is a relatively simple and natural
extension to what we have. I'll note in particular that tuple have a close
relationship to user type in the sense that a tuple will be really just like an
anonymous with no name for the fields and in particular a tuple value will be
the same than a user type value.
The syntax would simply look like that:
{noformat}
CREATE TABLE foo (
k int PRIMARY KEY,
v tuple<int, text, float>
)
INSERT INTO foo(k, v) VALUES(0, (3, 'bar', 2.1));
{noformat}
We can also add projections in selects if we want:
{noformat}
SELECT v[0], v[2] FROM foo WHERE k = 0;
{noformat}
but that can come later (after all, we still don't have projections for
collections and it's not a big deal).
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