Baskar, On 03.09.2013, at 23:11, Baskar Duraikannu <baskar.duraika...@outlook.com> wrote:
> I have a similar use case but only need to update portion of the row. We > basically perform single write (with old and new columns) with very low value > of ttl for old columns. I found out that using bound statements with java-driver works quite well for this case because the fields with a ? in the prepared statement but without a bound value will be automatically set to null - hence removed. So this actually automagically does what you/I want. See <https://groups.google.com/a/lists.datastax.com/d/msg/java-driver-user/APfnKNTXuvE/gBeCk37jgRAJ> Jan > > > From: jan.algermis...@nordsc.com > > Subject: Update-Replace > > Date: Fri, 30 Aug 2013 17:35:48 +0200 > > To: user@cassandra.apache.org > > > > Hi, > > > > I have a use case, where I periodically need to apply updates to a wide row > > that should replace the whole row. > > > > The straight-forward insert/update only replace values that are present in > > the executed statement, keeping remaining data around. > > > > Is there a smooth way to do a replace with C* or do I have to handle this > > by the application (e.g. doing delete and then write or coming up with a > > more clever data model)? > > > > Jan
