> show field keys from banciyuan
name: banciyuan
fieldKey      fieldType
--------      ---------
backfeed      integer
claims        integer
done          integer
ifr           float
irsr          float
items         float
redo          integer
rr            float
rsr           float
rtt_real      float
secondary     integer
size          float
todo          integer
unretrievable integer
version       string

max(backfeed)
max(claims)
max(claims)
average(ifr)
average(irsr)
sum(items)
max(redo)
average(rr)
average(rsr)
average(rtt_real)
max(secondary)
sum(size)
max(todo)
max(unretrievable)