Querying on a value and using that to pull other data in the same query

Question

I am having some issues pulling the correct data in a query. There is a table that houses application decision data that has a certain decision code in it, WA, for a particular population of applicants. These applicants also may have other records in the same table with different decision codes. Some applicants do NOT have WA as a decision code at all. What I need to do is pull anyone whose maximum sequence number in the table is associated with the WA decision code, then list all other decision codes that are also associated with the same applicant. These do not necessarily need pivoted, so long as I can pull all the records for a person whose highest sequence number is associated with WA and all of the other decision codes for that applicant for the same term code and application number also appear as rows in the output.
I do not have the rights in Oracle to create tables, so please pardon if this code to make the table is incorrect or doesn't show up here as code. This is not the entire SARAPPD table framework, just the pertinent columns, along with some data to put in them.
DROP TABLE SARAPPD;
CREATE TABLE SARAPPD
(PIDM              NUMBER(8),
TERM_CODE_ENTRY   VARCHAR2(6 CHAR),
APDC_CODE         VARCHAR2(2 CHAR),
APPL_NO        NUMBER(2),
SEQ_NO             NUMBER(2));
INSERT INTO SARAPPD VALUES (12345,'201280','WA',1,4);
INSERT INTO SARAPPD VALUES (12345,'201280','RE',1,3);
INSERT INTO SARAPPD VALUES (12345,'201280','AC',1,2);
INSERT INTO SARAPPD VALUES (23456,'201280','RE',1,2);
INSERT INTO SARAPPD VALUES (23456,'201280','WA',1,3);
INSERT INTO SARAPPD VALUES (23456,'201280','SC',1,1);
INSERT INTO SARAPPD VALUES (34567,'201280','AC',1,1);
INSERT INTO SARAPPD VALUES (45678,'201210','AC',2,1);
INSERT INTO SARAPPD VALUES (45678,'201280','AC',1,2);
INSERT INTO SARAPPD VALUES (45678,'201280','WA',1,3);
INSERT INTO SARAPPD VALUES (56789,'201210','SC',1,2);
INSERT INTO SARAPPD VALUES (56789,'201210','WA',1,3);
COMMIT;I have attempted to get the data with a query similar to the following:
WITH CURR_ADMIT AS
      SELECT   C.SEQ_NO "CURR_ADMIT_SEQ_NO",
                        C.PIDM "CURR_ADMIT_PIDM",
                        C.TERM_CODE_ENTRY "CURR_ADMIT_TERM",
                        C.APDC_CODE "CURR_ADMIT_APDC",
                        C.APPL_NO "CURR_ADMIT_APPNO"
                          FROM SARAPPD C
                          WHERE C.TERM_CODE_ENTRY IN ('201210','201280')
                          AND C.APDC_CODE='WA'
                         AND C.SEQ_NO=(select MAX(d.seq_no)
                                               FROM   sarappd d
                                               WHERE   d.pidm = C.pidm
                                               AND d.term_code_entry = C._term_code_entry)
select sarappd.pidm,
       sarappd.term_code_entry,
       sarappd.apdc_code,
       curr_admit.CURR_ADMIT_SEQ_NO,
       sarappd.appl_no,
       sarappd.seq_no
from sarappd,curr_admit
WHERE sarappd.pidm=curr_admit.PIDM
and sarappd.term_code_entry=curr_admit.TERM_CODE_ENTRY
AND sarappd.appl_no=curr_admit.APPL_NOIt pulls the people who have WA decision codes, but does not include any other records if there are other decision codes. I have gone into the user front end of the database and verified the information. What is in the output is correct, but it doesn't have other decision codes for that person for the same term and application number.
Thanks in advance for any assistance that you might be able to provide. I am doing the best I can to describe what I need.
Michelle Craig
Data Coordinator
Admissions Operations and Transfer Systems
Kent State University

Answer 1

Hi, Michelle,
903509 wrote:
I do not have the rights in Oracle to create tables, so please pardon if this code to make the table is incorrect or doesn't show up here as code. This is not the entire SARAPPD table framework, just the pertinent columns, along with some data to put in them. You really ought to get the necessary privileges, in a schema that doesn't have the power to do much harm, in a development database. If you're expected to develop code, you need to be able to fabricate test data.
Until you get those privileges, you can post sample data in the form of a WITH clause, like this:
WITH     sarappd    AS
     SELECT 12345 AS pidm, '201280' AS term_code_entry, 'WA' AS apdc_code , 1 AS appl_no, 4 AS seq_no     FROM dual UNION ALL
     SELECT 12345,           '201280',                    'RE',               1,             3                 FROM dual UNION ALL
     SELECT 12345,           '201280',                  'AC',            1,          2               FROM dual UNION ALL
... I have attempted to get the data with a query similar to the following:
WITH CURR_ADMIT AS
      SELECT   C.SEQ_NO "CURR_ADMIT_SEQ_NO",
C.PIDM "CURR_ADMIT_PIDM",
C.TERM_CODE_ENTRY "CURR_ADMIT_TERM",
C.APDC_CODE "CURR_ADMIT_APDC",
C.APPL_NO "CURR_ADMIT_APPNO"
FROM SARAPPD C
WHERE C.TERM_CODE_ENTRY IN ('201210','201280')
AND C.APDC_CODE='WA'
AND C.SEQ_NO=(select MAX(d.seq_no)
FROM   sarappd d
WHERE   d.pidm = C.pidm
AND d.term_code_entry = C._term_code_entry)
Are you sure this is what you're actually running? There are errors. such as referencing a column called termcode_entry (starting with an underscore) at the end of the fragment above. Make sure what you post is accurate.
Here's one way to do what you requested
WITH     got_last_values  AS
     SELECT  sarappd.*     -- or list all the columns you want
     ,     FIRST_VALUE (seq_no)    OVER ( PARTITION BY  pidm
                                    ORDER BY      seq_no     DESC
                              )           AS last_seq_no
     ,     FIRST_VALUE (apdc_code) OVER ( PARTITION BY  pidm
                                    ORDER BY      seq_no     DESC
                              )           AS last_apdc_code
     FROM    sarappd
     WHERE     term_code_entry     IN ( '201210'
                       , '201280'
SELECT     pidm
,     term_code_entry
,     apdc_code
,     last_seq_no
,     appl_no
,     seq_no
FROM     got_last_values
WHERE     last_apdc_code     = 'WA'
;Don't forget to post the results you want from the sample data given.
This is the output I get from the sample data you posted:
`     PIDM TERM_C AP LAST_SEQ_NO    APPL_NO     SEQ_NO
     23456 201280 WA           3          1          3
     23456 201280 RE           3          1          2
     23456 201280 SC           3          1          1
     45678 201280 WA           3          1          3
     45678 201280 AC           3          1          2
     45678 201210 AC           3          2          1
     56789 201210 WA           3          1          3
     56789 201210 SC           3          1          2I assume that the combination (pidm, seq_no) is unique.
There's an analytic LAST_VALUE function as well as FIRST_VALUE. It's simpler (if less intuitive) to use FIRST_VALUE in this problem because of the default windowing in analytic functions that have an ORDER BY clause.