RE: divide with decode

Srinivas,

You nearly had it. You just need to wrap each decode with a SUM (the same technique used to "rotate" a table except you are doing division instead of displaying each column):

select
  sum(decode(name,'physical reads',value)) /   sum(decode(name,'db block gets',value)) from
  v$sysstat
where
  name in ('db block gets','physical reads')

Regards,

Larry G. Elkins
elkinsl_at_flash.net
214.954.1781

> -----Original Message-----
> From: root_at_fatcity.com [mailto:root_at_fatcity.com]On Behalf Of Tatireddy,
> Shrinivas (MED, Keane)
> Sent: Saturday, August 04, 2001 11:20 AM
> To: Multiple recipients of list ORACLE-L
> Subject: divide with decode
>
>
> hi lists
>
> can anybody help me for the flwng :
>
> i need to do calculation dividing phy reads value/db block gets
>
> i am following the principle
>
> select decode(name,'physical reads',value)/decode(name,'db block
> gets',value)
> from v$sysstat
> where name in ('db block gets','physical reads')
>
> just this query is returning notthing.
>
> i tried with to_number function also, that is not also returning
> anything.
>
> is there any trick to solve this.
>
> srinivas
>
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Tatireddy, Shrinivas (MED, Keane)
> INET: Shrinivas.Tatireddy_at_med.ge.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Larry Elkins
  INET: elkinsl_at_flash.net

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