(select DELEGATOR as staker, sum(amount) as total_flow, case

when total_flow<=0.01 then 'FLOW<=0.01'

when total_flow>0.01 and total_flow<=0.1 then '0.01<FLOW<=0.1'

when total_flow>0.1 and total_flow<=1 then '0.1<FLOW<=1'

when total_flow>1 and total_flow<=10 then '1<FLOW<=10'

when total_flow>10 and total_flow<=100 then '10<FLOW<=100'

when total_flow>100 and total_flow<=1000 then '100<FLOW<=1000'

when total_flow>1000 then 'FLOW>1000'

end as Group_

from flow.core.ez_staking_actions

where action in ('DelegatorTokensCommitted','TokensCommitted')

group by 1)

select group_, count(staker) as staker_count

from tab1

group by 1