Create a crosstab sql

Question

Hi,
I have the below sql query,
select pool round((bytes/1024/1024),2) "Bytes in MB" from v$sgastat where name='free memory' order by pool;
POOL Bytes in MB
java pool 448
large pool 7029
shared pool 576
I wish to write a crosstab sql query to get the output as below,
java pool large pool shared pool
448 7029 576
How to wirte this sql ?
Thanks.

Answer 1

select max(case when pool = 'java pool' then mb end) "Java Pool"
,      max(case when pool = 'large pool' then mb end) "Large Pool"
,      max(case when pool = 'shared pool' then mb end) "Shared Pool"
from ( select pool
       ,      round((bytes/1024/1024),2) mb
       from   v$sgastat
       where name ='free memory'
       order by pool
     );or
select max(case when pool = 'java pool' then round((bytes/1024/1024),2) end) "Java Pool"
,      max(case when pool = 'large pool' then round((bytes/1024/1024),2) end) "Large Pool"
,      max(case when pool = 'shared pool' then round((bytes/1024/1024),2) end) "Shared Pool"
from   v$sgastat
where name ='free memory';Edited by: hoek on May 5, 2010 2:58 PM