Very sadly, no.  It's not (yet?) meant to be a particularly good interactive language, so the only "function" in cql is COUNT(), and that's really just special syntax. It seems, though, that you might actually be better off with a key of type 'ascii' or 'text', if that's how you expect to work with it.  Would it be an option to adjust that table?

The ASSUME-changes-outgoing-cql ticket (CASSANDRA-3799) would also help, so maybe keep an eye on that.


On Thu, May 3, 2012 at 1:22 PM, Eric Czech <> wrote:
Gotcha, I probably should have guessed that much.  Does CQL have any functions to convert ascii to hex so that I don't have to do that conversion elsewhere (I don't see one in the docs)?

On Thu, May 3, 2012 at 2:09 PM, paul cannon <> wrote:
On Thu, May 3, 2012 at 12:46 PM, Eric Czech <> wrote:
I can't believe I have to ask this but I have a CF with about 10 rows and the keys are literally 1 through 9.  

Why does this not work if I want the row where the key is ascii('5')?

cqlsh:Keyspace1>  select first 1 * from CF where key = '5';

This depends on the configured type (key_validation) of the key. From what you've posted, it looks like CQL is treating it as 'blob', not 'ascii'.

* I saw the Jira about the sort of phantom row with no values so I know why that's there

Listing the keys shows something like this:

cqlsh:Keyspace1> select key from CF ;

If I prepend a '3' to my key queries it works but I can't possibly see why I would have to do that.  

cqlsh:Keyspace1>   select first 1 * from CF  where key = '35';
( Returns the right rows for key '5')

Cause 35 is hex for ascii(5), as you pointed out.

Changing the validator appears to make no material difference beyond the key listing:

This is because ASSUME is only a cqlsh feature, and only affects how data is deserialized.  There is a ticket out for cqlsh also to mangle your outgoing CQL statements to match ASSUMEd types too, but that's not there yet.