constchar*queryBefore=(storeSids?"SELECT sid,ts,value FROM ":"SELECT ts,value FROM ")KEYSPACE_NAME
"."CF_SENSORDATA" WHERE sid in ? AND ws = ? AND ts <= ? ORDER BY ws DESC, ts DESC PER PARTITION LIMIT 1";
constchar*queryBefore;
if(storeSids)
queryBefore="SELECT sid,ts,value FROM "KEYSPACE_NAME"."CF_SENSORDATA" WHERE sid in ? AND ws = ? AND ts <= ? ORDER BY ws DESC, ts DESC PER PARTITION LIMIT 1";
else
queryBefore="SELECT ts,value FROM "KEYSPACE_NAME"."CF_SENSORDATA" WHERE sid in ? AND ws = ? AND ts <= ? ORDER BY ws DESC, ts DESC PER PARTITION LIMIT 1";