Databases
StackOverflow2013
Postsdbo
POCassandra 0.8 = What kind of "Row Count" features are provided?
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POCassandra 0.8 = What kind of "Row Count" features are provided?
    primarykey
    data
    text
    <p>are "Row Counts" (in a CF) in Cassandra meanwhile supported for </p> <p>a) RAndomPartitioner ?</p> <p>b) OrderPreservingPartitioner?</p> <p><a href="http://www.datastax.com/dev/blog/whats-new-in-cassandra-0-8-part-2-counters" rel="nofollow noreferrer">http://www.datastax.com/dev/blog/whats-new-in-cassandra-0-8-part-2-counters</a> implies this is easily possible? Quote: " “counting,” we mean here to provide an atomic increment operation in a single column value, as opposed to counting the number of columns in a row, or rows in a column family, both of which were already supported."</p> <p>Two years ago it was defenitely not supported for RP: <a href="https://stackoverflow.com/questions/1951843/row-count-of-a-column-family-in-cassandra">Row count of a column family in Cassandra</a></p> <p>Furthermoe even with OrderPreservingPartitioner, it was(??) a very heavy Operation (as far as I understood i have to retrieve all objects, this is/was not only a lightweight count operation to the row-count, but rather read also all data (rows?) ?)</p> <p>Update: I am absolutely aware of, that the new counting feature is completely different to row-counts. But the text above implies row-counts are also easily possible and supported quote "...both of which are supported..."? Is this marketing language meaning it is only possible as an extremely heaving operation using get_range_slice? Or is there something new that I am completly missing, that does this lightweight for both partitioniers? </p> <p>Thanks</p> <p>Markus</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USCommunity
    1. USMarkus
    plurals
    1. PL
      singulars
      1. LTLinked
    1. PL
      singulars
      1. LTLinked
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    2. PO
      singulars
      1. PTAnswer
    3. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POCassandra 0.8 = What kind of "Row Count" features are provided?
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POCassandra 0.8 = What kind of "Row Count" features are provided?
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. POCassandra 0.8 = What kind of "Row Count" features are provided?
      1. This table or related slice is empty.
      1. VTUpMod
    1. COThanks Thilo. Absolutely not! I updated the heading.
      singulars
      1. POCassandra 0.8 = What kind of "Row Count" features are provided?
      1. USMarkus
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload