Help to write using anlytical functions or singe count instead of many

Question

HI,
Could you some one help to write as single count instead of many (.Or) Is there any way to write below query using analytical functions?
SELECT paper_code,paper_code_description, numCandidates, cast(numAwaitingApproval as varchar2(10)) as numAwaitingApproval, (numawaitingtrans + numawaitingibtran) as numAwaitingSubmission, (numibsub + numsub) as numSubmittedForMarking
       FROM(
         SELECT e.paper_code,
  translate_paper(e.paper_code,:v_year,:v_month,:v_iblanguage,:v_paper_type) AS paper_code_description,
  COUNT(e.candidate)                                                     AS numcandidates,
  COUNT(DECODE(status, 'AWAITING AUTHENTICATION',1))                     AS numAwaitingApproval,
  COUNT(DECODE(status, 'AWAITING TRANSFER',1))                           AS numawaitingtrans,
  COUNT(DECODE(status, 'AWAITING IB TRANSFER',1))                        AS numawaitingibtran,
  COUNT(DECODE(status, 'SUBMITTED',1))                                   AS numsub,
  COUNT(DECODE(status, 'IB SUBMITTED',1))                                AS numibsub
FROM e_assessment_cands e,
  candidate_component_reg ccr,
  person_subject_session pss
WHERE e.year                = :v_year
AND e.month                 = :v_month
AND e.e_coursework          = :v_e_coursework
AND e.school_code           = :v_school_code
AND ccr.split_session_year  = e.year
AND ccr.split_session_month = e.month
AND ccr.candidate           = e.candidate
AND ccr.paper_code          = e.paper_code
AND ccr.subject             =:v_subject
AND ccr.subject_option      =COALESCE(:v_subject_option,ccr.subject_option)
AND ccr.lvl                 =COALESCE(:v_lvl,ccr.lvl)
AND ccr.language            =COALESCE(:v_language,ccr.language)
AND ccr.component           =COALESCE(:v_component,ccr.component)
AND pss.year                = ccr.split_session_year
AND pss.month               = ccr.split_session_month
AND pss.subject             = ccr.subject
AND pss.lvl                 = ccr.lvl
AND pss.subject_option      = ccr.subject_option
AND pss.language            = ccr.language
AND pss.role                = :v_role
AND pss.person_code         = :v_person_code
GROUP BY e.paper_code)

Answer 1

Hi,
user575115 wrote:
HI,
Could you some one help to write as single count instead of many (.Or) If you're using Oracle 11, look at SELECT ... PIVOT.
If you'd like help. post CREATE TABLE and INSERT statements for some sample data, and the results you want from that data.
Always say which version of Oracle you're using.
Given that you need numCnadidates and numAwaitingApproval, using COUNT twice seems to be the simplest and most efficient way to do it.
If you don't need the other COUNTs, such as numawaitingtrans, then don't compute them.
Is there any way to write below query using analytical functions?Analytic functions can give you a COUNT without reducing the result set to one row per group. It lookw like you do want to reduce the result set to one row per group, however, so I don't see how analytic functions would help in this problem.