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Editorial Team
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Asked: 2026-06-05T19:55:48+00:00

I have inserted string and integer values into dynamic columns in a Cassandra Column

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I have inserted string and integer values into dynamic columns in a Cassandra Column Family. When I query for the values in CQL they are displayed as hex encoded bits.

Can I somehow tell the query to decode the value into a string or integer?

I also would be happy to do this in the CLI if that’s easier. There I see you can specify assume <column_family> validator as <type>;, but that applies to all columns and they have different types, so I have to run the assumption and query many times.

(Note that the columns are dynamic, so I haven’t specified the validator when creating the column family).

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1 Answer

  1. Editorial Team

    You can use ASSUME in cqlsh like in cassandra-cli (although it only applies to printing values, not sending them, but that ought to be ok for you). You can also use it on a per-column basis, like:

    ASSUME <column_family> ('anchor:cnnsi.com') VALUES ARE text;

    ..although (a), I just tested it, and this functionality is broken in cassandra-1.1.1 and later. I posted a fix at CASSANDRA-4352. And (b), this probably isn’t a very versatile or helpful solution for more than a few one-off uses. I’d strongly recommend using CQL 3 here, as CQL direct support for wide storage engine rows like this is deprecated. Your table here is certainly adaptable to an (easier to use) CQL 3 model, but I couldn’t say exactly what it would be without knowing more about how you’re using it.

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