Hi,

I am working on improving the cassandra adapter. Right now, I found that if
my filter contains non-primary keys, calcite will just reject the filter
and just execute a no-filter cql query  which is bad. I am wondering how I
can split the filter into cassandra supported part and
cassandra-non-supported part, and push down the cassandra supported part to
cql. Below is an example.

Assuming the cassandra table contains field: a, b, c, and a is the only
primary key.

calcite sql is:  select a, b, c from table1 where a = 'xxx' and b < 3223;

I want to push down cql: select a, b, c from table1 where a = 'xxx' to
cassandra,

But right now, the cassandra adapter will only push down: select a, b, c
from table1, which is bad for cassandra.

Thanks a lot.
Shuyi

-- 
"So you have to trust that the dots will somehow connect in your future."

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