sql server - How to calculate with date ranges -


ok coding piece - tat - may simple beating head on this.

this returns # of toys each girl

select toys, count(girls), tat table1 (nolock)

i.e. 

girl       toys           tat _____      ______         ___________  kelly       1              0-5 michelle    1              16-30 grace       1              31+ katy        1              6-10 kelly       1              16-30

this returns # of toys in each age range

select tat, count(tat) table1 (nolock)

i.e.

tat          ?????? _____        ___________ 0-5             1 6-10            0 11-15           1 16-30           2 31+             1

the next step need divide 1 (kelly 16-30) # of toys in age range put in (2 16-30) :

1  / 2  = 50.00%

how do that? column ???? stuck at.

thank you! holly

create table #table1 (girl varchar(20), toys int, tat varchar(10))   insert #table1 (girl, toys, tat)    values ('kelly',1,'0-5')   ,('michelle',1,'16-30')   ,('grace',1,'31+')   ,('katy',1,'6-10')   ,('kelly',1,'16-30')    declare @dividend numeric(5,2) = 1   ;with gtcount (select tat, count(*) ctr                     #table1                     group tat )   select tat,ctr, @dividend/ctr percentage gtcount

hope helps...
elmer


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