[jira] [Created] (CASSANDRA-4450) CQL3: Allow preparing the consistency level, timestamp and ttl

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

Sylvain Lebresne created CASSANDRA-4450:
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             Summary: CQL3: Allow preparing the consistency level, timestamp and ttl
                 Key: CASSANDRA-4450
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4450
             Project: Cassandra
          Issue Type: Improvement
            Reporter: Sylvain Lebresne
            Priority: Minor


It could be useful to allow the preparation of the consitency level, the timestamp and the ttl. I.e. to allow:
{noformat}
UPDATE foo SET .. USING CONSISTENCY ? AND TIMESTAMP ? AND TTL ? 
{noformat}

A slight concern is that when preparing a statement we return the names of the prepared variables, but none of timestamp, ttl and consistency are reserved names currently, so returning those as names could conflict with a column name. We can either:
* make these reserved identifier (I have to add that I'm not a fan because at least for "timestamp", I think that's a potentially useful and common column name).
* use some specific special character to indicate those are not column names, like returning "[timestamp]", "[ttl]", "[consistency]".

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