How to select data from a table and insert into another table?

Question

I want to select specific fields of a table in cassandra and insert them into another table. I do this in sql server like this:

INSERT INTO Users(name,family)
         


        

Answer 1

For tables that are not very large, save yourself the file and use an anonymous pipe:

cqlsh -e "COPY keyspace.src_table (col1, col2, ...,ColN ) TO STDOUT WITH HEADER=false" | cqlsh -e "COPY keyspace.target_table (col1, col2, ...,ColN ) FROM STDIN" 

For very large datasets, this won't work. A strategy of per token range should be explored