Can I do this in merge?

Question

This query
select
--count(CONRTRM_PIDM),
conrtrm_pidm,
conrtrm_aidy_code,
conrtrm_fund_code,
conrtrm_offer_amt,
conrtrm_offer_date ,
conrtrm_activity_date,
conrtrm_disb_final_ind,
conrtrm_memo_exp_date,
conrtrm_orig_offer_amt,
conrtrm_orig_offer_date,
conrtrm_accept_amt,
conrtrm_accept_date
from
conrtrm
where
conrtrm_pidm = 102366 produce the following results
CONRTRM_PIDM CONRTRM_AIDY_CODE   CONRTRM_FUND_CODE               CONRTRM_OFFER_AMT              CONRTRM_OFFER_DAT E                    CONRTRM_ACTIVITY_DATE         CONRTRM_DISB_FINAL_IND
102366                                   0708                          FSTAFS                                             1,000                                         20070207                                      20110413                                             Y
102366                                   0708                          FSTAFS                                             1,000                                         20070207                                      20110413                                             Y
102366                                   0708                          FWS                                                    950                                           20070207                                      20110413                                            Y
102366                                   0708                          FWS                                                    950                                           20070207                                      20110413                                            Y
102366                                   0708                          SKIDGR                                             8,425                                          20070207                                      20110413                                            Y
102366                                   0708                          SKIDGR                                            8,425                                           20070207                                      20110413                                            YI need the following results I need to merge the amounts?
IF
CONRTRM_PIDM CONRTRM and CONRTRM_AIDY_CODE and CONRTRM_FUND_CODE are the same I need to merge the amounts and choose the max(actiovity date) the activity date can be different
for example the code
FSTAFS
should be ended in the results
As a
102366 0708 FSTAFS AS 2000 (one row) merge the amounts and with the max activity date (CONRTRM_ACTIVITY_DATE )
FWS one row 1900
SKIDGR one row (16850)
How I can do this using merge (not too much experience with the merge queries)
Thank you

Answer 1

Hi,
MERGE is a DML statement that can do both INSERT (add new rows to a table) and UPDATE (change existing rows).
Do you want to change the table, or do you want to run a query (that is, a SELECT statement) that shows data already in the table, without changing what is stored?
If you just want a query, then you want GROUP BY, where each row of output may represent more than one row from the original table. (I think that is what you meant when you said "merge".)
I think you want something like this:
SELECT    conrtrm_pidm, conrtrm_aidy_code, conrtrm_fund_code
,       SUM (conrtrm_offer_amt)     AS total_amt
,       MAX (conrtrm_activity_date)     AS last_activity_date
FROM       conrtrm
WHERE       conrtrm_pidm     = 102366
GROUP BY  conrtrm_pidm, conrtrm_aidy_code, conrtrm_fund_code
I hope this answers your question.
If not, post a little sample data (CREATE TABLE and INSERT statements, relevant columns only), and also post the results you want from that data.
Explain, using specific examples, how you get those results from that data.
If you really do want to change the table, then the INSERT statements you post should show how the tables are before the DML, and the results will be the contents of the changed table(s) after the DML.
Always say which version of Oracle you're using.
Edited by: Frank Kulash on May 12, 2011 3:25 PM