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Oracle -- SQL SELECT -- UNION

finance_teacher
on
Medium Priority
1,013 Views
Last Modified: 2013-12-19
I currently run the below to
get ID_DESC & ID_BRAND changes.

How can I make this query shorter
by using just a SELECT statement ?
  ** tables attached
-----------------------------------------------------------------------------------
SELECT new.ID_STK_NO SKU, new.ID_DESC NAME,
       'ID_DESC' CHANGE_TYPE,
       old.ID_DESC OLDVALUE, new.ID_DESC NEWVALUE, new.ID_SOURCE
FROM GML_IMPORT_ITEMMSTR new
LEFT JOIN GML_IMPORT_ITEMMSTR_OS old
ON new.ID_STK_NO=old.ID_STK_NO
WHERE nvl(new.ID_DESC,'x') != nvl(old.ID_DESC,'x')
and
  (
 
  new.ID_SOURCE in ('F','P')
 
  or
 
  old.ID_SOURCE in ('F','P')
 
  )
and
  (
 
   new.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')
   
   or
   
   old.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')
   
   )

union

SELECT new.ID_STK_NO SKU, new.ID_DESC NAME,
       'ID_BRAND' CHANGE_TYPE,
       old.ID_BRAND OLDVALUE, new.ID_BRAND NEWVALUE, new.ID_SOURCE
FROM GML_IMPORT_ITEMMSTR new
LEFT JOIN GML_IMPORT_ITEMMSTR_OS old
ON new.ID_STK_NO=old.ID_STK_NO
WHERE nvl(new.ID_BRAND,'x') != nvl(old.ID_BRAND,'x')
and
  (
 
  new.ID_SOURCE in ('F','P')
 
  or
 
  old.ID_SOURCE in ('F','P')
 
  )
and
  (
 
   new.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')
   or
   
   old.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')
   )
ORDER BY SKU, CHANGE_TYPE
tables.txt
Comment
Watch Question

Naveen KumarProduction Manager / Application Support Manager
CERTIFIED EXPERT

Commented:
may be something like this.. but not sure what you are trying to do and why ?

SELECT new.ID_STK_NO SKU, new.ID_DESC NAME,
       'ID_BRAND' CHANGE_TYPE,
       old.ID_BRAND OLDVALUE, new.ID_BRAND NEWVALUE,
       'ID_DESC' CHANGE_TYPE1,
       old.ID_DESC OLDVALUE1, new.ID_DESC NEWVALUE1,
       new.ID_SOURCE      
FROM GML_IMPORT_ITEMMSTR new
LEFT JOIN GML_IMPORT_ITEMMSTR_OS old
ON new.ID_STK_NO=old.ID_STK_NO
WHERE (
nvl(new.ID_DESC,'x') != nvl(old.ID_DESC,'x')
or nvl(new.ID_BRAND,'x') != nvl(old.ID_BRAND,'x') )
and
  ( new.ID_SOURCE in ('F','P') or    old.ID_SOURCE in ('F','P')   )
and
  (  
   new.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')  
   or  
   old.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')  
   )
Naveen KumarProduction Manager / Application Support Manager
CERTIFIED EXPERT

Commented:
becasue you wanted everything in one query without using union, we need to have extra column in the above query to get the information you are looking for.
Naveen KumarProduction Manager / Application Support Manager
CERTIFIED EXPERT

Commented:
provide some sample data for 2 or 3 records in each table and say what output is coming for the old union query and what output you need without using the union query.

Commented:
If for one record, it can be only either ID_DESC or ID_BRAND changed, try this

Select new.ID_STK_NO SKU, new.ID_DESC NAME,
    Case When nvl(new.ID_DESC,'x') != nvl(old.ID_DESC,'x') Then 'ID_DESC' Else 'ID_BRAND' End As CHANGE_TYPE,
    Case When nvl(new.ID_DESC,'x') != nvl(old.ID_DESC,'x') Then  old.ID_DESC Else old.ID_BRAND End As OLDVALUE ,
    Case When nvl(new.ID_DESC,'x') != nvl(old.ID_DESC,'x') Then new.ID_DESC Else new.ID_BRAND End As NEWVALUE,
    new.ID_SOURCE
FROM GML_IMPORT_ITEMMSTR new
LEFT JOIN GML_IMPORT_ITEMMSTR_OS Old ON new.ID_STK_NO=old.ID_STK_NO
WHERE (nvl(new.ID_DESC,'x') != nvl(old.ID_DESC,'x') Or nvl(new.ID_BRAND,'x') != nvl(old.ID_BRAND,'x'))
And  ( new.ID_SOURCE in ('F','P') Or old.ID_SOURCE in ('F','P'))
and
  (
   new.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')
   Or
   old.ID_BRAND in ('ALBRT', 'AMIGO', 'CMRKT', 'CUBFD', 'DMNCK',
                 'FLRIT', 'FDLAN', 'GRTVL', 'IGA..', 'RCHFD',
                 'RILEY', 'SAFWY', 'SCOTT', 'SH&'||'SV', 'SHPVL',
                 'WEGMN')
   )
Commented:
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