CASE with DATE_SUB and SELECT

Hello again,
im looking for some help again.
I have a table TAB_EVENT where some dates are stored to some events.
An event can have more than one date of course.
Im trying to code a SELECT statement and it looks like this by now:
,CASE
WHEN (to_date(TEST_DATE)) in (SELECT to_date(ev.EVENT_DATE) FROM TAB_L2EVENT ev, TAB_LINK lnk, TAB_TREE tr WHERE ev.EVENT_ID = 1 AND ev.OBJ_ID = lnk.OBJ_ID AND lnk.LINK_ID = tr.NEXT_ID AND tr.NEXT = BM_NUMBER)
THEN 'YES'
ELSE 'NO'
END as F_EVENTMy problem now is, that TEST_DATE can also be in a plus/minus 30-days interval inside the in-line query.
I searched forum and found something like
DATE_SUB(TEST_DATE, INTERVAL 30 DAY)but im getting errors, if I just replace TEST_DATE with the code above.
Maybe some1 can help?
Thank you and regards
Chris

Hi,
If ev.event_date stores dates, then its datatype should be DATE. You'll avoid lots of problems if you make that change.
If it already is a DATE, don't use TO_DATE.
At any rate, you can get the results you want by changing the IN sub-query to an EXISTS sub-query:
,   CASE
          WHEN EXISTS ( SELECT 1
                            FROM   TAB_L2EVENT ev, TAB_LINK lnk, TAB_TREE tr
               WHERE ev.EVENT_ID = 1 AND ev.OBJ_ID = lnk.OBJ_ID AND lnk.LINK_ID = tr.NEXT_ID AND tr.NEXT = BM_NUMBER
               AND    TO_DATE (ev.event_date, 'DD-Mon-YYYY') - TO_DATE (test_date, 'DD-Mon-YYYY')
                                  BETWEEN -30
                           AND     30
     THEN 'YES'
     ELSE 'NO'
    END as F_EVENTWhenever you do use TO_DATE, always specify the format in the second argument. (I used 'DD-Mon-YYYY' above, but I don't know if that's actually how your strings are formatted.)
I'm not familiar with DATE_SUB. What is it?

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Hi,
I'm using Discoverer 9.0.4.
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Hi there
I think therefore you have answered your own question and determined that using CASE in aggregations is not a good idea. I only threw out the two CASE options as ideas not as solutions, just in case (pardon the pun) one of these worked in your situation.
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When this behaviour occurs, are perhaps guides included in your selection?

Simple test case with NL and table order .

Hi,
did some tests on my 9.2.0.8 and got few questions:
SQL> select count(*) from p;
COUNT(*)
      2000
SQL> select count(*) from c;
COUNT(*)
      1000
SQL> select count(*) , id from p group by id having count(*) > 1;
no rows selected
SQL> select count(*) , id from c group by id having count(*) > 1;
COUNT(*)         ID
       100         10
SQL> desc p
           Name
    1      ID number
    2      FILLER varchar2(100)
SQL> desc c
           Name
    1      ID number
    2      FILLER varchar2(100)
Got 10046 traces:
case A
select /*+ use_nl(p) leading(c) */ *
from
p , c where p.id = c.id and c.id in (10)
Rows     Row Source Operation
    100 TABLE ACCESS BY INDEX ROWID P
    201   NESTED LOOPS
    100    TABLE ACCESS BY INDEX ROWID C
    100     INDEX RANGE SCAN C_ID (object id 411255)
    100    INDEX RANGE SCAN P_ID (object id 411256)
Case B optimal
select /*+ use_nl(c) leading(p) */ *
from
p , c where p.id = c.id and c.id in (10)
Rows     Row Source Operation
    100 TABLE ACCESS BY INDEX ROWID C
    102   NESTED LOOPS
      1    TABLE ACCESS BY INDEX ROWID P
      1     INDEX RANGE SCAN P_ID (object id 411256)
    100    INDEX RANGE SCAN C_ID (object id 411255)So its simple nested loop with postponed inner table access .
Why in row source operation we have got 102 rows (NL level) ? (It means NL was executed 102 times ?)
And why 201 in other case ?
Regards
GregG

I am not sure about the calculation/reason for those A-ROWS figures but the NL operation executes only once (but accesses inner rowsource 100 times in case one and once in second case) in both cases (which is as expected).
A closer test case (to OP) is
SQL> select * from v$version ;
BANNER
Oracle Database 10g Release 10.2.0.5.0 - Production
PL/SQL Release 10.2.0.5.0 - Production
CORE     10.2.0.5.0     Production
TNS for Linux: Version 10.2.0.5.0 - Production
NLSRTL Version 10.2.0.5.0 - Production
SQL> create table p nologging as select level as id, cast(dbms_random.string('a', 100) as varchar2(100)) as filler from dual connect by level <= 2000 ;
Table created.
SQL> exec dbms_stats.gather_table_stats(user, 'P') ;
PL/SQL procedure successfully completed.
SQL> create index p_id on p(id) nologging ;
Index created.
SQL> select count(*) from p;
COUNT(*)
      2000
SQL> select count(*) , id from p group by id having count(*) > 1;
no rows selected
SQL> create table c nologging as select level as id, cast(dbms_random.string('a', 100) as varchar2(100)) as filler from dual connect by level <= 900 union all select 10, cast(dbms_random.string('a', 100) as varchar2(100)) as filler from dual connect by level <= 99 ;
Table created.
SQL> select count(*) , id from c group by id having count(*) > 1;
COUNT(*)         ID
       100         10
SQL> exec dbms_stats.gather_table_stats(user, 'C') ;
PL/SQL procedure successfully completed.
SQL> create index c_id on c(id) nologging ;
Index created.
SQL> select /*+ use_nl(p) leading(c) gather_plan_statistics */ * from p , c where p.id = c.id and c.id in (10) ;
        ID FILLER                                                                                                       ID
FILLER
        10 opKRJynLxjeCiOScvOklQBXfpnfgvlhHNLzlKKrFaNzQLODKSnKMxpzecqyFkVSLvdosZJhWckBcQbpIaqttahlqBxrugKQVrnIk         10
zrGZSmUFXNyNMOViUYSvPDdfznSlMvaFnQakopPtcBvXQkWmMlWCnrPyeZLfhuLLeYyAEkcwZNSfoASLYpoAnpESqlQWkaEGatXV
        10 opKRJynLxjeCiOScvOklQBXfpnfgvlhHNLzlKKrFaNzQLODKSnKMxpzecqyFkVSLvdosZJhWckBcQbpIaqttahlqBxrugKQVrnIk         10
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        10 opKRJynLxjeCiOScvOklQBXfpnfgvlhHNLzlKKrFaNzQLODKSnKMxpzecqyFkVSLvdosZJhWckBcQbpIaqttahlqBxrugKQVrnIk         10
ncSqclZvOGgyXDPaaouGaUqXmJtFNbNyFzUalDknEMvTsBRwGmTxOCIalLvqMnuTFBZJGzNfBqaSVHUtvNDceVZqKQQyqeGKOUdz
100 rows selected.
SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST')) ;
PLAN_TABLE_OUTPUT
SQL_ID 1f55m4rabtu3h, child number 0
select /*+ use_nl(p) leading(c) gather_plan_statistics */ * from p , c where p.id = c.id and
c.id in (10)
Plan hash value: 2553281496
| Id | Operation                     | Name | Starts | E-Rows | A-Rows |   A-Time   | Buffers | Reads |
|   0 | SELECT STATEMENT              |      |      0 |        |      0 |00:00:00.01 |       0 |      0 |
|   1 | TABLE ACCESS BY INDEX ROWID | P    |      1 |      1 |    100 |00:00:00.01 |     112 |      2 |
|   2 |   NESTED LOOPS                |      |      1 |      1 |    201 |00:00:00.02 |     110 |      2 |
|   3 |    TABLE ACCESS BY INDEX ROWID| C    |      1 |      1 |    100 |00:00:00.01 |       7 |      1 |
|* 4 |     INDEX RANGE SCAN          | C_ID |      1 |      1 |    100 |00:00:00.01 |       3 |      1 |
|* 5 |    INDEX RANGE SCAN           | P_ID |    100 |      1 |    100 |00:00:00.01 |     103 |      1 |
Predicate Information (identified by operation id):
   4 - access("C"."ID"=10)
   5 - access("P"."ID"=10)
24 rows selected.
SQL> select /*+ use_nl(c) leading(p) gather_plan_statistics */ * from p , c where p.id = c.id and c.id in (10) ;
        ID FILLER                                                                                                       ID
FILLER
        10 opKRJynLxjeCiOScvOklQBXfpnfgvlhHNLzlKKrFaNzQLODKSnKMxpzecqyFkVSLvdosZJhWckBcQbpIaqttahlqBxrugKQVrnIk         10
zrGZSmUFXNyNMOViUYSvPDdfznSlMvaFnQakopPtcBvXQkWmMlWCnrPyeZLfhuLLeYyAEkcwZNSfoASLYpoAnpESqlQWkaEGatXV
        10 opKRJynLxjeCiOScvOklQBXfpnfgvlhHNLzlKKrFaNzQLODKSnKMxpzecqyFkVSLvdosZJhWckBcQbpIaqttahlqBxrugKQVrnIk         10
hKtrWPCfAmWWLGMXfwHCusSwVpehEnZdxYPLouIuBlMMiSKlIJWwklZCAXZaCbIxKlhzBVRhhTPdLcheyAdoYyfxwomqWRrMXuMk
        10 opKRJynLxjeCiOScvOklQBXfpnfgvlhHNLzlKKrFaNzQLODKSnKMxpzecqyFkVSLvdosZJhWckBcQbpIaqttahlqBxrugKQVrnIk         10
ncSqclZvOGgyXDPaaouGaUqXmJtFNbNyFzUalDknEMvTsBRwGmTxOCIalLvqMnuTFBZJGzNfBqaSVHUtvNDceVZqKQQyqeGKOUdz
100 rows selected.
SQL> select * from table(dbms_xplan.display_cursor(null, null, 'ALLSTATS LAST')) ;
PLAN_TABLE_OUTPUT
SQL_ID 7hvf1zvsvfhdp, child number 0
select /*+ use_nl(c) leading(p) gather_plan_statistics */ * from p , c where p.id =
c.id and c.id in (10)
Plan hash value: 2133717140
| Id | Operation                     | Name | Starts | E-Rows | A-Rows |   A-Time   | Buffers |
|   0 | SELECT STATEMENT              |      |      0 |        |      0 |00:00:00.01 |       0 |
|   1 | TABLE ACCESS BY INDEX ROWID | C    |      1 |      1 |    100 |00:00:00.01 |      11 |
|   2 |   NESTED LOOPS                |      |      1 |      1 |    102 |00:00:00.01 |       7 |
|   3 |    TABLE ACCESS BY INDEX ROWID| P    |      1 |      1 |      1 |00:00:00.01 |       4 |
|* 4 |     INDEX RANGE SCAN          | P_ID |      1 |      1 |      1 |00:00:00.01 |       3 |
|* 5 |    INDEX RANGE SCAN           | C_ID |      1 |      1 |    100 |00:00:00.01 |       3 |
Predicate Information (identified by operation id):
   4 - access("P"."ID"=10)
   5 - access("C"."ID"=10)
24 rows selected.
SQL> drop table p purge ;
Table dropped.
SQL> drop table c purge ;
Table dropped.
SQL> spool offEdited by: user503699 on Jan 18, 2012 11:49 PM

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Edited by: SUDHEER on Dec 30, 2008 12:52 PM

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FROM promo,     promo_plan ,     event_promotion
WHERE      promo.promo_id = promo_plan.promo_id
AND     promo_plan.promo_plan_id = event_promotion.promo_plan_id
AND     event_promotion.detail_id = '33532282'
when blah then 'blah';

Hello
AH i see what you are driveing at, yes i am just using case slect to determin which >routine to run, as the name is stored in a diferent location depending on the event kind >code. are are you saying i need multiple selects within the case statment? one for each >type of kind code?Well it depends really. If the select
select kind_code from event where
event.event_id = event.container_event_idIs going to return more than one row for any given run, you're going to need to take a bit of a different approach. Is it the case that this query will return more than one row which would mean that you want value X and value Y for each row?
Using the test data and everything from before:
SQL> CREATE OR REPLACE PROCEDURE p_GetStuff(ac_Result   OUT sys_refcursor)
2 IS
3
4 BEGIN
5     /*
6             This uses a cartesian product i.e. repeat every row in
7             dt_test_data against every row in dt_test_event
8     */
9     OPEN Ac_Result FOR
10     SELECT
11             CASE dt_test_event.kind_code
12             WHEN 1 THEN
13                     dt_test_data.object_name
14             WHEN 2 THEN
15                     dt_test_data.object_type
16             END
17     FROM
18             dt_test_data,
19             dt_test_event;
20
21 END;
22 /
Procedure created.
SQL> var x refcursor
SQL> exec p_getstuff(:x)
PL/SQL procedure successfully completed.
SQL> print x
CASEDT_TEST_EVENT.KIND_CODEWHEN1THENDT_TEST_DATA.OBJECT_NAMEWHEN2THENDT_TEST_DAT
ABC
ABC4
AD1
AD2
ADHOC_CONTACT_LOG
AK_CD_CLAIM_VALIDATION_SOURCE
AK_CD_CLAIM_VALIDATION_TYPE
AK_CLAIM_ACTION_ROWSOURCE
APPROVAL_LIST_MEM_IE
APPROVE_GRP_HIST_IE
10 rows selected.
SQL> insert into dt_test_event values(2);
1 row created.
SQL> exec p_getstuff(:x)
PL/SQL procedure successfully completed.
SQL> print x
CASEDT_TEST_EVENT.KIND_CODEWHEN1THENDT_TEST_DATA.OBJECT_NAMEWHEN2THENDT_TEST_DAT
ABC
ABC4
AD1
AD2
ADHOC_CONTACT_LOG
AK_CD_CLAIM_VALIDATION_SOURCE
AK_CD_CLAIM_VALIDATION_TYPE
AK_CLAIM_ACTION_ROWSOURCE
APPROVAL_LIST_MEM_IE
APPROVE_GRP_HIST_IE
TABLE
CASEDT_TEST_EVENT.KIND_CODEWHEN1THENDT_TEST_DATA.OBJECT_NAMEWHEN2THENDT_TEST_DAT
TABLE
TABLE
TABLE
TABLE
INDEX
INDEX
INDEX
INDEX
INDEX
20 rows selected.Or an alternative to that would be, if you have a fixed number of event ids and they relate to a fixed number of attributes you could use something like:
CREATE OR REPLACE PROCEDURE p_GetStuff3(ac_Result     OUT sys_refcursor)
IS
BEGIN
          The SUBSTR
          is just there to make sure the data fit on screen, my SQL*Plus
          is a bit weird!
     OPEN Ac_Result FOR
     SELECT
          SUBSTR(MAX(DECODE(dt_test_event.kind_code,1,dt_test_data.object_name,NULL)),1,30) attribute_1,
          SUBSTR(MAX(DECODE(dt_test_event.kind_code,2,dt_test_data.object_type,NULL)),1,30) attribute_2
     FROM
          dt_test_data,
          dt_test_event
     GROUP BY
          object_name;
END;
SQL> delete from dt_test_event where kind_code=2;
1 row deleted.
SQL> exec p_getstuff3(:x)
PL/SQL procedure successfully completed.
SQL> print x
ATTRIBUTE_1                    ATTRIBUTE_2
ABC
ABC4
AD1
AD2
ADHOC_CONTACT_LOG
AK_CD_CLAIM_VALIDATION_SOURCE
AK_CD_CLAIM_VALIDATION_TYPE
AK_CLAIM_ACTION_ROWSOURCE
APPROVAL_LIST_MEM_IE
APPROVE_GRP_HIST_IE
10 rows selected.
SQL> insert into dt_test_event values(2);
1 row created.
SQL> exec p_getstuff3(:x)
PL/SQL procedure successfully completed.
SQL> print x
ATTRIBUTE_1                    ATTRIBUTE_2
ABC                            TABLE
ABC4                           TABLE
AD1                            TABLE
AD2                            TABLE
ADHOC_CONTACT_LOG              TABLE
AK_CD_CLAIM_VALIDATION_SOURCE INDEX
AK_CD_CLAIM_VALIDATION_TYPE    INDEX
AK_CLAIM_ACTION_ROWSOURCE      INDEX
APPROVAL_LIST_MEM_IE           INDEX
APPROVE_GRP_HIST_IE            INDEX
10 rows selected.Message was edited by:
david_tyler
Oops, copy + pasted the wrong comments for the 2nd proc.

Insert, Case and Select

I try to do one insert with case and select and I can't, I don't know why:
This is what I want
I have one column in the TAUX_MEDIA_PPM named GRAU. IF GRAU = 'TIPO', the I have to do one type of INSERT, if is = 'ATRIBUTO' I have to do another type of INSERT and ELSE, another type of INSERT.
This is what I tested for the last time:
SELECT T1.GRAU,
CASE
WHEN T1.GRAU = 'TIPO' THEN
INSERT INTO TF_MEDIA_PPM__TESTE (
MEDIA_PPM_SEQ, DATA_SK, ESCOPO_SK, MOTIVO_SK, PERIODO_TIPO, MEDIA_PPM_TIPO, TRES_SIGMA_TIPO, SEIS_SIGMA_TIPO,
PERIODO_ATRIBUTO, MEDIA_PPM_ATRIBUTO, TRES_SIGMA_ATRIBUTO, SEIS_SIGMA_ATRIBUTO, PERIODO_ATRIBCOMPL, MEDIA_PPM_ATRIBCOMPL,
TRES_SIGMA_ATRIBCOMPL, SEIS_SIGMA_ATRIBCOMPL
) VALUES (
SEQ_TF_MEDIA_PPM.nextval, T2.DATA_SK, T1.ESCOPO_SK, T1.MOTIVO_SK, NULL, T2.MEDIA, T2.ALERTA, T2.ATENCAO, NULL,
0, 0, 0, NULL, 0, 0, 0
WHEN T1.GRAU = 'ATRIBUTO' THEN
INSERT INTO TF_MEDIA_PPM__TESTE (
MEDIA_PPM_SEQ, DATA_SK, ESCOPO_SK, MOTIVO_SK, PERIODO_TIPO, MEDIA_PPM_TIPO, TRES_SIGMA_TIPO, SEIS_SIGMA_TIPO,
PERIODO_ATRIBUTO, MEDIA_PPM_ATRIBUTO, TRES_SIGMA_ATRIBUTO, SEIS_SIGMA_ATRIBUTO, PERIODO_ATRIBCOMPL, MEDIA_PPM_ATRIBCOMPL,
TRES_SIGMA_ATRIBCOMPL, SEIS_SIGMA_ATRIBCOMPL
) VALUES (
SEQ_TF_MEDIA_PPM.nextval, T2.DATA_SK, T1.ESCOPO_SK, T1.MOTIVO_SK, NULL, 0, 0, 0, NULL,
T2.MEDIA, T2.ALERTA, T2.ATENCAO, NULL, 0, 0, 0
WHEN T1.GRAU = 'ATRIB_COMPL' THEN
INSERT INTO TF_MEDIA_PPM__TESTE (
MEDIA_PPM_SEQ, DATA_SK, ESCOPO_SK, MOTIVO_SK, PERIODO_TIPO, MEDIA_PPM_TIPO, TRES_SIGMA_TIPO, SEIS_SIGMA_TIPO,
PERIODO_ATRIBUTO, MEDIA_PPM_ATRIBUTO, TRES_SIGMA_ATRIBUTO, SEIS_SIGMA_ATRIBUTO, PERIODO_ATRIBCOMPL, MEDIA_PPM_ATRIBCOMPL,
TRES_SIGMA_ATRIBCOMPL, SEIS_SIGMA_ATRIBCOMPL
) VALUES (
SEQ_TF_MEDIA_PPM.nextval, T2.DATA_SK, T1.ESCOPO_SK, T1.MOTIVO_SK, NULL, 0, 0, 0, NULL,
0, 0, 0, NULL, T2.MEDIA, T2.ALERTA, T2.ATENCAO
END
FROM TAUX_MEDIA_PPM
JOIN TX_MEDIA T2 ON T2.CHAVE = T1.CHAVE;
I don't know what I have to do now...
Regards,
Tiberio
Edited by: MrTiberio on 27/03/2012 06:55
Fixing code formatting

I used this:
INSERT INTO tf_media_ppm__teste
(media_ppm_seq,data_sk,escopo_sk,motivo_sk,periodo_tipo,media_ppm_tipo,tres_sigma_tipo,seis_sigma_tipo,periodo_atributo,media_ppm_atributo
,tres_sigma_atributo,seis_sigma_atributo,periodo_atribcompl,media_ppm_atribcompl,tres_sigma_atribcompl,seis_sigma_atribcompl)
SELECT seq_tf_media_ppm.nextval,t2.data_sk,t1.escopo_sk,t1.motivo_sk,NULL
,CASE t1.grau WHEN 'TIPO' THEN t2.media ELSE 0 END
,CASE t1.grau WHEN 'TIPO' THEN t2.alerta ELSE 0 END
,CASE t1.grau WHEN 'TIPO' THEN t2.atencao ELSE 0 END
,NULL
,CASE t1.grau WHEN 'ATRIBUTO' THEN t2.media ELSE 0 END
,CASE t1.grau WHEN 'ATRIBUTO' THEN t2.alerta ELSE 0 END
,CASE t1.grau WHEN 'ATRIBUTO' THEN t2.atencao ELSE 0 END
,NULL
,CASE t1.grau WHEN 'ATRIB_COMPL' THEN t2.media ELSE 0 END
,CASE t1.grau WHEN 'ATRIB_COMPL' THEN t2.alerta ELSE 0 END
,CASE t1.grau WHEN 'ATRIB_COMPL' THEN t2.atencao ELSE 0 END
FROM TAUX_MEDIA_PPM T1
JOIN TX_MEDIA T2 ON T2.CHAVE = T1.CHAVE;
and worked fine.
Thanks for both of you !

CASE with DATE_SUB and SELECT

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