SQL redesigning Post: 302482972

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Top Forums Programming SQL redesigning Post 302482972 by ctsgnb on Thursday 23rd of December 2010 08:14:35 AM

12-23-2010

Registered User

SQL redesigning

The following request give the expected result (respecting a certain output formatting)
But i was wondering if the same result could be produced in a more "optimized way" (Oracle 9i by the way)

Code:

set feedback off
set pagesize 0
set trimspool on
ttitle off
btitle off
set verify off
set linesize 260
column name heading "TABLESPACE" format A25
column size_mb heading "SIZE (M)" format 99999990.9
column "USED (%)" format 990
select ts name,
    round(size_mb,2) size_mb,
        round(decode(total_size_mb,0,'',(total_size_mb-total_free_mb)*100/total_size_mb),0) "USED (%)",
        autoextensible "AUT"
from
(select a.tablespace_name ts,
        nvl(c.mb,0)+nvl(e.mb,0) size_mb,
              decode(lower(a.contents),'temporary',
                decode(sign(nvl(e.tot_mb,0)-nvl(e.mb,0)),1,'YES','NO'),
                decode(sign(nvl(c.tot_mb,0)-nvl(c.mb,0)),1,'YES','NO'))
                autoextensible,
              decode(lower(a.contents),'temporary',
                decode(sign(nvl(e.tot_mb,0)-nvl(e.mb,0)),1,
                  nvl(e.tot_mb,0),nvl(e.mb,0)),
                decode(sign(nvl(c.tot_mb,0)-nvl(c.mb,0)),1,
                  nvl(c.tot_mb,0),nvl(c.mb,0)))
                total_size_mb,
              decode(lower(a.contents),'temporary',
                decode(sign(nvl(e.tot_mb,0)-nvl(e.mb,0)),1,
                  nvl(e.tot_mb,0)-nvl(f.used_mb,0),
                    nvl(e.mb,0)-nvl(f.used_mb,0)),
                decode(sign(nvl(c.tot_mb,0)-nvl(c.mb,0)),1,
                  nvl(c.tot_mb,0)-nvl(c.mb,0)+nvl(d.free_mb,0),
                    nvl(d.free_mb,0)))
                total_free_mb
       from
         dba_tablespaces a,
         (select tablespace_name ts,
                 sum(extents) ext,
                 count(*) seg
          from dba_segments group by tablespace_name) b,
         (select tablespace_name ts,
                 sum(nvl(bytes,0))/1024/1024 mb,
                 count(*) files,
                 sum(decode(lower(autoextensible),'no',nvl(bytes,0),nvl(maxbytes,0)))/1024/1024 tot_mb
          from dba_data_files group by tablespace_name) c,
         (select tablespace_name ts,
                 sum(nvl(bytes,0))/1024/1024 free_mb
          from dba_free_space group by tablespace_name) d,
         (select tablespace_name ts,
                 sum(nvl(bytes,0)/1024/1024) mb,
                 count(*) files,
                 sum(decode(lower(autoextensible),'no',nvl(bytes,0),
                   nvl(maxbytes,0)))/1024/1024 tot_mb
          from dba_temp_files group by tablespace_name) e,
         (select tablespace_name ts,
                 sum(nvl(bytes_used,0))/1024/1024 used_mb
          from gv$temp_extent_pool group by tablespace_name) f
        where
          a.tablespace_name=b.ts(+) and
          a.tablespace_name=c.ts(+) and
          a.tablespace_name=d.ts(+) and
          a.tablespace_name=e.ts(+) and
          a.tablespace_name=f.ts(+))
order by 1 desc
/

ctsgnb

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nvlist_add_int64

nvlist_add_boolean(3NVPAIR)				 Name-value Pair Library Functions			       nvlist_add_boolean(3NVPAIR)

NAME

       nvlist_add_boolean,  nvlist_add_boolean_value,  nvlist_add_byte,  nvlist_add_int8,  nvlist_add_uint8,  nvlist_add_int16, nvlist_add_uint16,
       nvlist_add_int32,  nvlist_add_uint32,  nvlist_add_int64,  nvlist_add_uint64,   nvlist_add_string,   nvlist_add_nvlist,	nvlist_add_nvpair,
       nvlist_add_boolean_array,      nvlist_add_byte_array,	  nvlist_add_int8_array,      nvlist_add_uint8_array,	   nvlist_add_int16_array,
       nvlist_add_uint16_array,     nvlist_add_int32_array,	nvlist_add_uint32_array,     nvlist_add_int64_array,	  nvlist_add_uint64_array,
       nvlist_add_string_array, nvlist_add_nvlist_array - add new name-value pair to nvlist_t

SYNOPSIS

       cc [ flag... ] file... -lnvpair [ library... ]
       #include <libnvpair.h>

       int nvlist_add_boolean(nvlist_t *nvl, const char *name);

       int nvlist_add_boolean_value(nvlist_t *nvl, const char *name, boolean_t val);

       int nvlist_add_byte(nvlist_t *nvl, const char *name, uchar_t val);

       int nvlist_add_int8(nvlist_t *nvl, const char *name, int8_t val);

       int nvlist_add_uint8(nvlist_t *nvl, const char *name, uint8_t val);

       int nvlist_add_int16(nvlist_t *nvl, const char *name, int16_t val);

       int nvlist_add_uint16(nvlist_t *nvl, const char *name, uint16_t val);

       int nvlist_add_int32(nvlist_t *nvl, const char *name, int32_t val);

       int nvlist_add_uint32(nvlist_t *nvl, const char *name, uint32_t val);

       int nvlist_add_int64(nvlist_t *nvl, const char *name, int64_t val);

       int nvlist_add_uint64(nvlist_t *nvl, const char *name, uint64_t val);

       int nvlist_add_string(nvlist_t *nvl, const char *name, const char *val);

       int nvlist_add_nvlist(nvlist_t *nvl, const char *name, nvlist_t *val);

       int nvlist_add_nvpair(nvlist_t *nvl, nvpair_t *nvp);

       int nvlist_add_boolean_array(nvlist_t *nvl, const char *name, boolean_t *val, uint_t nelem);

       int nvlist_add_byte_array(nvlist_t *nvl, const char *name, uchar_t *val, uint_t nelem);

       int nvlist_add_int8_array(nvlist_t *nvl, const char *name, int8_t *val, uint_t nelem);

       int nvlist_add_uint8_array(nvlist_t *nvl, const char *name, uint8_t *val, uint_t nelem);

       int nvlist_add_int16_array(nvlist_t *nvl, const char *name, int16_t *val, uint_t nelem);

       int nvlist_add_uint16_array(nvlist_t *nvl, const char *name, uint16_t *val, uint_t nelem);

       int nvlist_add_int32_array(nvlist_t *nvl, const char *name, int32_t *val, uint_t nelem);

       int nvlist_add_uint32_array(nvlist_t *nvl, const char *name, uint32_t *val, uint_t nelem);

       int nvlist_add_int64_array(nvlist_t *nvl, const char *name, int64_t *val, uint_t nelem);

       int nvlist_add_uint64_array(nvlist_t *nvl, const char *name, uint64_t *val, uint_t nelem);

       int nvlist_add_string_array(nvlist_t *nvl, const char *name, char *const *val, uint_t nelem);

       int nvlist_add_nvlist_array(nvlist_t *nvl, const char *name, nvlist_t **val, uint_t nelem);

PARAMETERS

       nvl	The nvlist_t (name-value pair list) to be processed.

       nvp	The nvpair_t (name-value pair) to be processed.

       name	Name of the nvpair (name-value pair).

       nelem	Number of elements in value (that is, array size).

       val	Value or starting address of the array value.

DESCRIPTION

       These  functions  add a new name-value pair to an nvlist_t. The uniqueness of nvpair name and data types follows the nvflag argument speci-
       fied for nvlist_alloc(). See nvlist_alloc(3NVPAIR).

       If NV_UNIQUE_NAME was specified for nvflag, existing nvpairs with matching names are removed before the new nvpair is added.

       If NV_UNIQUE_NAME_TYPE was specified for nvflag, existing nvpairs with matching names and data types are removed before the new	nvpair	is
       added.

       If neither was specified for nvflag, the new nvpair is unconditionally added at the end of the list. The library preserves the order of the
       name-value pairs across packing, unpacking, and duplication.

       Multiple threads can simultaneously read the same nvlist_t, but only one thread can actively change a given nvlist_t at a time. The  caller
       is responsible for the synchronization.

       The nvlist_add_boolean() function is deprecated. The nvlist_add_boolean_value() function should be used instead.

RETURN VALUES

       These functions return 0 on success and an error value on failure.

ERRORS

       These functions will fail if:

       EINVAL	       There is an invalid argument.

       ENOMEM	       There is insufficient memory.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +----------------------------+------------------------------+
       |      ATTRIBUTE TYPE	    |	    ATTRIBUTE VALUE	   |
       +----------------------------+------------------------------+
       |Interface Stability	    | Evolving			   |
       +----------------------------+------------------------------+
       |MT-Level		    | MT-Safe			   |
       +----------------------------+------------------------------+

SEE ALSO

       libnvpair(3LIB), attributes(5)

SunOS 5.10							    2 Feb 2004					       nvlist_add_boolean(3NVPAIR)