cassandra 2.0 - Moving data from one table to other -
i working on cassandra. have 2 tables. table a
, b
. in table there 2 columns id
, name
. in table b
there 2 columns id
, personname
. need migrate info table a
b
info name in table a
should go personname in table b
. help me on this.
my approach is:
createtable b
; get resultset of tablea
dump row contents (when dump row contents id , name) write captured fields table b
(when capturing info name doesnot exist here. ? work here.) drop table a
getresult set table b
dump out row contents
assuming id primary key in both tables, can followings cqlsh:
copy 'a.csv'; re-create b 'a.csv';
hope helps.
cassandra-2.0
No comments:
Post a Comment