help with this group of
Hello
I need your help to make a group in a query (for ORACLE 11 g) for some columns and a particular column, get the latest (or value of that column) it's my table example:
| CODE | MOBILE | AMOUNT | COUNTRY | RECORD_DATE |
|---|---|---|---|---|
| 1000 | 99999999 | 10 | U.S.. | 18 JUNE 14 |
| 1000 | 99999999 | 5 | Italy | JUNE 13, 14 |
| 2000 | 99999999 | 20 | France | 16 JUNE 14 |
| 2000 | 88888888 | 3 | Germany | 17 JUNE 14 |
| 2000 | 88888888 | 11 | France | 14 JUNE 14 |
| 1000 | 88888888 | 32 | Canada | JUNE 10, 14 |
So my query result should make a 'group', CODE, MOBILE, and the AMOUNT of MONEY and give the latter country registered in this form:
| CODE | MOBILE | AMOUNT | COUNTRY |
|---|---|---|---|
| 1000 | 99999999 | 15 | U.S.. |
| 2000 | 99999999 | 20 | France |
| 1000 | 88888888 | 32 | Canada |
| 2000 | 88888888 | 14 | Germany |
Is just an example, I can make the query and group by statement, but I can't show just the last country (though I think that in the recent record of column RECORD_DATE).
Can you help me with this pls? I don't know much about oracle 11 g
Thank you much in advance.
Best regards
Mauro
Hi, Mauro,
So, you don't want to MAX (record_date); you want to the country which is on the same line as the MAX (record_date); Isn't it?
This looks like a job for the fucntion LAST aggregation.
Since I have not phew copy your table, I'll use scott.emp (which is probably on your system) to illustrate.
SELECT deptno, job
The SUM (sal) AS total_sal
MIN (ename) DUNGEON (DENSE_RANK LAST ORDER BY hiredate)
AS most_recent
FROM scott.emp
GROUP BY deptno, job
ORDER BY deptno, job
;
Output:
DEPTNO JOB TOTAL_SAL MOST_RECENT
---------- --------- ---------- -----------
THE 10 1300 MILLER CLERK
10 MANAGER 2450 CLARK
10. PRESIDENT KING 5000
20 ANALYST SCOTT 6000
20 CLERK 1900 ADAMS
20 MANAGER 2975 JONES
JAMES CLERK 30 950
30 MANAGER 2850 BLAKE
30 SELLER 5600 MARTIN
What happens if one is be a tie for the most recent line, i.e. If the MAX (record_date) in a group we produce 2 or more lines, with different countries?
I hope that answers your question.
If not, post a small example of data (CREATE TABLE and only relevant columns, INSERT statements) for all of the tables involved and the results desired from these data.
Point where the above query is to produce erroneous results, and explain, using specific examples, how you get the right results from data provided in these places.
If you change the query at all, post your modified version.
Always say what version of Oracle you are using (for example, 11.2.0.2.0).
See the FAQ forum: https://community.oracle.com/message/9362002#9362002
Tags: Database
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