Rollup Query

Question

I have written the following query for summarizing tablespace usage :
SELECT DECODE(GROUPING(a.file_name), 1, NULL,a.tablespace_name) AS "TABLESPACE",
DECODE(GROUPING(a.file_name), 1 ,'TOTAL', a.file_name) AS "DATAFILE",
ROUND(SUM(a.bytes)/1024/1024, 2) AS "SIZE(MB)",
NVL(ROUND(SUM(b.bytes)/1024/1204, 2), 0) AS "FREE(MB)",
100-(ROUND(100*(NVL(ROUND(sum(b.bytes)/1024/1204, 2), 0) / ROUND(SUM(a.bytes)/1024/1024, 2)),2)) AS "%USED"
FROM dba_data_files a,
dba_free_space b
WHERE b.file_id (+)=a.file_id
AND a.tablespace_name NOT IN (
SELECT UPPER(value)
                         FROM v$parameter where
                         LOWER(name) ='undo_tablespace'
GROUP BY a.tablespace_name, ROLLUP (a.file_name);
I would like to added the autoextensible column from dba_data_files to show whether or not the datafile can autoextend. I tried doing it like this:
SELECT DECODE(GROUPING(a.file_name), 1, NULL,a.tablespace_name) AS "TABLESPACE",
DECODE(GROUPING(a.file_name), 1 ,'TOTAL', a.file_name) AS "DATAFILE",
DECODE(GROUPING(a.file_name), 1, NULL, a.autoextensible) AS "AUTOEXTEND",
ROUND(SUM(a.bytes)/1024/1024, 2) AS "SIZE(MB)",
NVL(ROUND(SUM(b.bytes)/1024/1204, 2), 0) AS "FREE(MB)",
100-(ROUND(100*(NVL(ROUND(sum(b.bytes)/1024/1204, 2), 0) / ROUND(SUM(a.bytes)/1024/1024, 2)),2)) AS "%USED"
FROM dba_data_files a,
dba_free_space b
WHERE b.file_id (+)=a.file_id
AND a.tablespace_name NOT IN (
SELECT UPPER(value)
     FROM v$parameter where
          LOWER(name) ='undo_tablespace'
GROUP BY a.tablespace_name, a.autoextensible, ROLLUP (a.file_name);
This method works fine until you have a tablespace that has both a datafile that is non-autoextend and a datafile that is autoextend. When this situation arises it messes up the ROLLUP subtotaling and shows a subtotal for the non-autoextend datafile and the autoextend datafile instead of showing a subtotal for the combined datafiles. Can anyone think of a way of displaying the autoextensible column in the query without including it in the aggregation?

Answer 1

Hi,
Try this code.
Regards salim.
SELECT   DECODE (GROUPING (a.file_name),
                 1, NULL,
                 a.tablespace_name
                ) AS "TABLESPACE",
         DECODE (GROUPING (a.file_name),
                 1, 'TOTAL',
                 a.file_name
                ) AS "DATAFILE",
         DECODE (GROUPING (a.file_name),
                 1, NULL,
                 a.autoextensible
                ) AS "AUTOEXTEND",
         ROUND (SUM (a.BYTES) / 1024 / 1024, 2) AS "SIZE(MB)",
         NVL (ROUND (SUM (b.BYTES) / 1024 / 1204, 2), 0) AS "FREE(MB)",
           100
         - (ROUND (  100
                   * (  NVL (ROUND (SUM (b.BYTES) / 1024 / 1204, 2), 0)
                      / ROUND (SUM (a.BYTES) / 1024 / 1024, 2)
                   2
           ) AS "%USED"
    FROM dba_data_files a, dba_free_space b
   WHERE b.file_id(+) = a.file_id
     AND a.tablespace_name NOT IN (SELECT UPPER (VALUE)
                                     FROM v$parameter
                                    WHERE LOWER (NAME) = 'undo_tablespace')
GROUP BY a.tablespace_name,  ROLLUP ((a.autoextensible,a.file_name));Remark: please put your code between