create table dw_route_numbs as 
select 'step1' as step,count(distinct remote_addr)  as numbs from tmp_page_views where request like '/item%'
union
select 'step2' as step,count(distinct remote_addr) as numbs from tmp_page_views where request like '/category%'
union
select 'step3' as step,count(distinct remote_addr) as numbs from tmp_page_views where request like '/order%'
union
select 'step4' as step,count(distinct remote_addr)  as numbs from tmp_page_views where request like '/index%';

select tmp.rnstep,tmp.rnnumbs/tmp.rrnumbs as ratio

from

(

select rn.step as rnstep,rn.numbs as rnnumbs,rr.step as rrstep,rr.numbs as rrnumbs  from dw_route_numbs rn

inner join

dw_route_numbs rr) tmp

where tmp.rrstep='step1';

select tmp.rrstep as rrstep,tmp.rrnumbs/tmp.rnnumbs as ration

from

(

select rn.step as rnstep,rn.numbs as rnnumbs,rr.step as rrstep,rr.numbs as rrnumbs  from dw_route_numbs rn

inner join

dw_route_numbs rr) tmp

where cast(substr(tmp.rnstep,5,1) as int)=cast(substr(tmp.rrstep,5,1) as int)-1;

select abs.step,abs.numbs,abs.ratio as abs_ratio,rel.ratio as rel_ratio

from

(

select tmp.rnstep as step,tmp.rnnumbs as numbs,tmp.rnnumbs/tmp.rrnumbs as ratio

from

(

select rn.step as rnstep,rn.numbs as rnnumbs,rr.step as rrstep,rr.numbs as rrnumbs  from dw_route_numbs rn

inner join

dw_route_numbs rr) tmp

where tmp.rrstep='step1'

) abs

left outer join

(

select tmp.rrstep as step,tmp.rrnumbs/tmp.rnnumbs as ratio

from

(

select rn.step as rnstep,rn.numbs as rnnumbs,rr.step as rrstep,rr.numbs as rrnumbs  from dw_route_numbs rn

inner join

dw_route_numbs rr) tmp

where cast(substr(tmp.rnstep,5,1) as int)=cast(substr(tmp.rrstep,5,1) as int)-1

) rel

on abs.step=rel.step;