OK, I have solved my problems with Cassandra data model. Now I am using Column Families of type Super and SuperColumns with many columns inside.
Thanks! 2010/4/16 Julio Carlos Barrera Juez <juliocar...@gmail.com> > Hi again, > > First of all, obviously, I have omitted the timestamps to make easy the > representation, not in the code. Secondly, there are one supercolumn with > two rows, A and D, all the others are columns, including B, > with various key-values (1, 2, etc.). I need two levels for my design, it is > mandatory, it means, I need supercolumns and columns. > > I am trying to introduce key-value(-timestamp) 6, 7, 8 and 9; but when I > try to do it, the values are not appended to the other ones. Instead of > this, only the final value of each column is stored. > > I am trying to append values in columns inside a supercolumn, > but maintaining old values. > > All help will be appreciated. Thank you. > > > 2010/4/15 Miguel Verde <miguelitov...@gmail.com> > > Just to nitpick your representation a little bit, columnB/etc... are >> supercolumnB/etc..., key1/etc... are column1/etc..., and you can probably >> omit valueA/valueD designations entirely, it would still be understood. >> >> Columns in Cassandra always have timestamps, you can't omit them. >> >> Can you post a snippet of the code you are using and the error you get? >> >> On Thu, Apr 15, 2010 at 5:02 AM, Julio Carlos Barrera Juez < >> juliocar...@gmail.com> wrote: >> >>> Hi all, >>> >>> I'm working with Cassandra 0.5 and Thrift API. I have a simple doubt: >>> >>> I want to insert a row in columns inside a supercolumn, like this >>> (without timestamps): >>> >>> SuperColumnNameA ==> keyA valueA ==> columnB ==> key1 value1 >>> >>> ==> key2 value2 >>> >>> ==> key3 value3 >>> ==> columnC >>> ==> key4 value4 >>> >>> ==> key5 value5 >>> ==> keyD valueD ==> columnE ==> *key6 >>> value6* >>> >>> ==> *key7 value7* >>> ==> columnF ==>* >>> key8 >>> value8* >>> >>> ==> *key9 value9* >>> >>> For instance, I want to insert only key-values 6,7,8 and 9, but when I >>> try it, I destroy all the others values. What is the correct mode to do it. >>> I have tries obtaining the supercolumn and adding more values, >>> bath_insert(), etc, but I always failing. >>> >>> Thank you. >>> >> >> >
