Subquery scalar to select max

Hi all

Oracle Version
11.2.0.1.0


I need to write a query update one table based on the following criteria:
create table trades (tid number, descp varchar2(20));

create table trade_descp (tid number, aud_desc varchar2(20), c_date date)


insert into trades
values
(1,NULL)

insert into trades
values
(3,NULL)

insert into trades
values
(4,NULL)

insert into trade_descp values
(1,'abdc(M)','1-Jan-2012')

insert into trade_descp values
(1,'abdc(M)','1-Jan-2013')

insert into trade_descp values
(1,'abdc(N)','1-Jan-2014')
The output I need is to update the table of trades with a description with the maximum date of trade_descp table based on a filter for example descp like "%M %.
There is an index on the column tid trade_descp table (with huge files).

Can this be achieved in direct SQL.


Thank you and best regards,
Nik

Nikhil Juneja wrote:
but that is a full table of trade_descp table scan. Can we make us of the index built on the TID column?

SQL> merge
  2    into trades a
  3    using (
  4           select  tid,
  5                   max(aud_desc) keep(dense_rank last order by c_date) descp
  6             from  trade_descp
  7             where aud_desc like '%M%'
  8             group by tid
  9          ) b
 10      on (
 11          b.tid = a.tid
 12         )
 13    when matched
 14      then update
 15              set a.descp = b.descp
 16  /

1 row merged.

SQL> select  *
  2    from  trades
  3  /

       TID DESCP
---------- --------------------
         1 abdc(M)
         3
         4

SQL> explain plan for
  2  merge
  3    into trades a
  4    using (
  5           select  tid,
  6                   max(aud_desc) keep(dense_rank last order by c_date) descp
  7             from  trade_descp
  8             where aud_desc like '%M%'
  9             group by tid
 10          ) b
 11      on (
 12          b.tid = a.tid
 13         )
 14    when matched
 15      then update
 16              set a.descp = b.descp
 17  /

Explained.

SQL> @?\rdbms\admin\utlxpls

PLAN_TABLE_OUTPUT
-----------------------------------------------------------------------------------------------------------------------------
Plan hash value: 1775522890

----------------------------------------------------------------------------------------------------
| Id  | Operation                       | Name             | Rows  | Bytes | Cost (%CPU)| Time     |
----------------------------------------------------------------------------------------------------
|   0 | MERGE STATEMENT                 |                  |     2 |    48 |     5  (20)| 00:00:01 |
|   1 |  MERGE                          | TRADES           |       |       |            |          |
|   2 |   VIEW                          |                  |       |       |            |          |
|   3 |    SORT GROUP BY                |                  |     2 |   142 |     5  (20)| 00:00:01 |
|   4 |     NESTED LOOPS                |                  |       |       |            |          |
|   5 |      NESTED LOOPS               |                  |     2 |   142 |     4   (0)| 00:00:01 |
|   6 |       TABLE ACCESS FULL         | TRADES           |     3 |   111 |     3   (0)| 00:00:01 |
|*  7 |       INDEX RANGE SCAN          | TRADE_DESCP_IDX1 |     3 |       |     0   (0)| 00:00:01 |
|*  8 |      TABLE ACCESS BY INDEX ROWID| TRADE_DESCP      |     1 |    34 |     1   (0)| 00:00:01 |
----------------------------------------------------------------------------------------------------

Predicate Information (identified by operation id):
---------------------------------------------------

   7 - access("TID"="A"."TID")
   8 - filter("AUD_DESC" IS NOT NULL AND "AUD_DESC" LIKE '%M%')

Note
-----
   - dynamic sampling used for this statement (level=2)

25 rows selected.

SQL>

SY.

Tags: Database

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name2 address_e
name3 address_f 

3 rows selected

    Published by: Cyn on December 17, 2009 16:39

  • SQL select max value in a group

    Hi all!

    Newbie question here... I'm a bit confused by how accomplish getting the maximum value for a group within a game when I have several tables going on results.

    I need to capture only the T2. BI_TASK_CD and MAX (T2. BI_WRKFLW_TASK_SEQ_NBR) for each unique "SO NBR.

    So, in this example below, I should finish with only 3 rows for re ' 2227510 ', ' 2211700', 2227515'


    I have:
    SELECT 
T1.MSTR_SO_NBR AS "SO NBR",
T1.BI_WRKFLW_TASK_SEQ_NBR,
T1.BI_TASK_CD,
T1.BI_EVENT_DT_TM,
T1.BI_CRITICAL_TASK_SW,
T2.BI_TASK_CD as "T2.BI_TASK_CD",
T2.BI_WRKFLW_TASK_SEQ_NBR as "T2.BI_WRKFLW_TASK_SEQ_NBR",
T2.BI_EVENT_DT_TM as "T2.BI_EVENT_DT_TM",
T2.BI_CRITICAL_TASK_SW as "T2.BI_CRITICAL_TASK_SW"

FROM
(SELECT DISTINCT
  BI_SO_MASTER.BI_SO_NBR as "MSTR_SO_NBR",
  BI_SO_DET_VIEW_1.BI_SO_NBR,
  BI_WRKFLW_TASKS.BI_WRKFLW_TASK_SEQ_NBR,
  BI_WRKFLW_TASKS.BI_TASK_CD,
  BI_WRKFLW_TASKS.BI_EVENT_DT_TM,
  BI_WRKFLW_TASKS.BI_CRITICAL_TASK_SW
FROM(XXX)
...
) T1

LEFT OUTER JOIN

 (SELECT DISTINCT
       --BI_SO_MASTER.BI_SO_NBR,
       BI_SO_DET_VIEW_1.BI_SO_NBR,
       BI_WRKFLW_TASKS.BI_WRKFLW_TASK_SEQ_NBR,
       BI_WRKFLW_TASKS.BI_TASK_CD,
       BI_WRKFLW_TASKS.BI_EVENT_DT_TM,
       BI_WRKFLW_TASKS.BI_CRITICAL_TASK_SW 
 FROM(XXX)  
...
) T2

ON 
T1.BI_SO_NBR = T2.BI_SO_NBR 

WHERE
T2.BI_WRKFLW_TASK_SEQ_NBR < T1.BI_WRKFLW_TASK_SEQ_NBR
AND T1.BI_SO_NBR IN ('2227510', '2211700', '2227515')

ORDER BY 
"SO NBR" ASC,
T2.BI_WRKFLW_TASK_SEQ_NBR DESC
    Current result set:
    SO NBR  BI_WRKFLW_TASK_SEQ_NBR BI_TASK_CD BI_EVENT_DT_TM      BI_CRITICAL_TASK_SW T2.BI_TASK_CD T2.BI_WRKFLW_TASK_SEQ_NBR T2.BI_EVENT_DT_TM   T2.BI_CRITICAL_TASK_SW                                         
------- ---------------------- ---------- ------------------- ------------------- ------------- ------------------------- ------------------- ----------------------                                         
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   ENGWORVIPG    20                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   SERVCOORD     19                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   ENGWORVIPG    17                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   ENGSTKASGN    16                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   ENGNWO        13                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   PAYCOLLECT    12                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   PRESENTVAL    11                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   RATEMINDEM    10                        2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   STKREVIEW     9                         2012-01-16 11:37:14 Y                                                              
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   ENGROWIPG     8                         2012-01-16 11:37:14 Y                                                              
2227510 33                     OPSCREW    2012-08-27 10:50:25 Y                   PAYCOLLECT    21                        2012-08-27 10:51:47 Y                                                              
2227510 33                     OPSCREW    2012-08-27 10:50:25 Y                   PRESENTVAL    20                        2012-08-27 10:51:44 Y                                                              
2227510 33                     OPSCREW    2012-08-27 10:50:25 Y                   RATEMINDEM    19                        2012-08-27 10:51:41 Y                                                              
2227510 33                     OPSCREW    2012-08-27 10:50:25 Y                   CHARGES       9                         2012-08-27 10:51:35 Y                                                              
2227510 33                     OPSCREW    2012-08-27 10:50:25 Y                   CBMRETIRE     1                         2012-08-27 10:50:45 Y                                                              
2227515 33                     OPSCREW    2012-08-27 11:01:46 Y                   PAYCOLLECT    21                        2012-08-27 11:03:07 Y                                                              
2227515 33                     OPSCREW    2012-08-27 11:01:46 Y                   PRESENTVAL    20                        2012-08-27 11:03:04 Y                                                              
2227515 33                     OPSCREW    2012-08-27 11:01:46 Y                   RATEMINDEM    19                        2012-08-27 11:03:02 Y                                                              
2227515 33                     OPSCREW    2012-08-27 11:01:46 Y                   CHARGES       9                         2012-08-27 11:02:58 Y                                                              
2227515 33                     OPSCREW    2012-08-27 11:01:46 Y                   CBMRETIRE     1                         2012-08-27 11:02:08 Y                                                              
    Desire the result set:
    SO NBR  BI_WRKFLW_TASK_SEQ_NBR BI_TASK_CD BI_EVENT_DT_TM      BI_CRITICAL_TASK_SW T2.BI_TASK_CD T2.BI_WRKFLW_TASK_SEQ_NBR T2.BI_EVENT_DT_TM   T2.BI_CRITICAL_TASK_SW                                         
------- ---------------------- ---------- ------------------- ------------------- ------------- ------------------------- ------------------- ----------------------                                         
2211700 21                     OPSCREW    2012-01-16 11:37:14 Y                   ENGWORVIPG    20                        2012-01-16 11:37:14 Y                                                                                                 
2227510 33                     OPSCREW    2012-08-27 10:50:25 Y                   PAYCOLLECT    21                        2012-08-27 10:51:47 Y                                                                                                 
2227515 33                     OPSCREW    2012-08-27 11:01:46 Y                   PAYCOLLECT    21                        2012-08-27 11:03:07 Y                                                                                                 
    Thanks for your help!

    :) John

    This sounds like a job for and analytic function. Something like:

    SELECT "SO NBR", BI_WRKFLW_TASK_SEQ_NBR, BI_TASK_CD, BI_EVENT_DT_TM,
       BI_CRITICAL_TASK_SW, "T2.BI_TASK_CD", "T2.BI_WRKFLW_TASK_SEQ_NBR",
       "T2.BI_EVENT_DT_TM", "T2.BI_CRITICAL_TASK_SW"
FROM (SELECT T1.MSTR_SO_NBR AS "SO NBR",
             T1.BI_WRKFLW_TASK_SEQ_NBR,
             T1.BI_TASK_CD,
             T1.BI_EVENT_DT_TM,
             T1.BI_CRITICAL_TASK_SW,
             T2.BI_TASK_CD as "T2.BI_TASK_CD",
             T2.BI_WRKFLW_TASK_SEQ_NBR as "T2.BI_WRKFLW_TASK_SEQ_NBR",
             T2.BI_EVENT_DT_TM as "T2.BI_EVENT_DT_TM",
             T2.BI_CRITICAL_TASK_SW as "T2.BI_CRITICAL_TASK_SW",
             ROW_NUMBER() OVER (PARTITION BY T1.MSTR_SO_NBR
                                ORDER BY T2.BI_WRKFLW_TASK_SEQ_NBR desc) rn
      FROM (SELECT DISTINCT BI_SO_MASTER.BI_SO_NBR as "MSTR_SO_NBR",
                            BI_SO_DET_VIEW_1.BI_SO_NBR,
                            BI_WRKFLW_TASKS.BI_WRKFLW_TASK_SEQ_NBR,
                            BI_WRKFLW_TASKS.BI_TASK_CD,
                            BI_WRKFLW_TASKS.BI_EVENT_DT_TM,
                            BI_WRKFLW_TASKS.BI_CRITICAL_TASK_SW
            FROM(XXX)
              ...) T1
               LEFT OUTER JOIN (SELECT DISTINCT BI_SO_DET_VIEW_1.BI_SO_NBR,
                                       BI_WRKFLW_TASKS.BI_WRKFLW_TASK_SEQ_NBR,
                                       BI_WRKFLW_TASKS.BI_TASK_CD,
                                       BI_WRKFLW_TASKS.BI_EVENT_DT_TM,
                                       BI_WRKFLW_TASKS.BI_CRITICAL_TASK_SW
                                FROM(XXX)
                                ...) T2
                  ON T1.BI_SO_NBR = T2.BI_SO_NBR
      WHERE T2.BI_WRKFLW_TASK_SEQ_NBR < T1.BI_WRKFLW_TASK_SEQ_NBR
        AND T1.BI_SO_NBR IN ('2227510', '2211700', '2227515'))
WHERE rn = 1
ORDER BY "SO NBR" ASC, T2.BI_WRKFLW_TASK_SEQ_NBR DESC

    John

  • If you select max value using over()

    Hi, I am unable to choose the query below max rated
    could you please help me in this
    with T as 
(select 100001 ID , 'SLNG' RATING ,  'AA-' RAT_SYBL , 1 TYPE  FROM DUAL UNION ALL
SELECT 100001   , 'SLNG'   ,  'AA--'  ,   2    FROM DUAL 
)
SELECT ID,RATING,CASE WHEN (RATING='SLNG')
                                         THEN  MAX(RAT_SYBL) OVER (PARTITION BY ID)
                                         ELSE NULL
                                         END AS SEL_RATING ,TYPE
 FROM T
    I have the 2 lines of the above, but I don't need that single line to display
    Thank you

    I don't need that single line to display

    Maybe:

    SQL> with t as (
  select 100001 id, 'SLNG' rating, 'AA-' rat_sybl, 1 type from dual union all
         select 100001, 'SLNG', 'AA--', 2 from dual
)
--
--
select id, rating, sel_rating, type
  from (select id,
               rating,
               rat_sybl,
               case when (rating = 'SLNG') then max (rat_sybl) over (partition by id) else null end as sel_rating,
               type
          from t)
 where rat_sybl = sel_rating
/
        ID RATING SEL_RATING       TYPE
---------- ------ ---------- ----------
    100001 SLNG   AA--                2
1 row selected.

    ?

  • How to model in OWB, if you have a subquery in your select statement? (11.2)

    What operator (ie the Table operator) to use if I have a subquery as part of my select statement? (As I do works, but is not elegant. What I do is to create a table for the subquery, and join with other sources to point to my goal.) But, would appreciate the best way with the characteristics of OWB.

    Here is the entire SQL (including the subquery):

    SELECT to_numbe (null), course_id
    at. Book, lp.NAME,
    (by selecting b.pricing in qp_pricing_attributes b
    where b.list_id = ll.list_id and b.product = at.product) sign.
    LL. Operand price, lhb.comments
    Of
    pricing_attribs to,.
    He's list_lines,
    list_h lp,
    Lhb Liste_B
    WHERE 1 = 1
    and ll.list_line_id = atrib.list_line_id
    AND ll.list_header_id = lp.list_header_id
    AND lp.list_header_id = lhb.list_header_id



    Thank you.

    Hello

    Didn't need to be a table in the target. A very simple example, let's say you wanted to do the following:
    Select ename, (select dname dept d where d.deptno = e.deptno) of emp e

    Then DEPT is the table of your choice and EMP is your table of conduct.

    1. Add EMP on the canvas.
    2. Add to the search operator
    3 link research DEPT
    4. tap on finish
    5 card EMP. Department at the Dept. INGRP1 (search operator)
    6. change the search operator, on tab Lookup Conditions for lookup column DEPTNO and DEPTNO of entry attribute
    7. Search full now

    You can add to a table operator target and map of the EMP source table and attributes for release of the search operator. You can change the step 4 to complete the wizard and define the list of choices, but I chose to do 5, to automatically get the names and the data types of the inputs. There are many other options currently in GR 11, 2 in the search.

    Hope it makes sense.

    See you soon
    David

  • SELECT max query

    Hello

    I'm trying to select the record from the scenario below.
    Oracle Database 10 g Enterprise Edition release 10.2.0.3.0 - 64bi
    CREATE TABLE T4
(
  MID       NUMBER,
  PID       NUMBER,
  SID       VARCHAR2(32 BYTE),
  SUPPLIER  NUMBER,
  UPDT      TIMESTAMP(6),
  EDT       DATE
)

Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT, EDT)
 Values
   (44333949, 136349891, '36219891030F', 4447, TO_TIMESTAMP('1/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'), TO_DATE('01/05/2010 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT, EDT)
 Values
   (47016634, 670608153, '36219891030F', 4447, TO_TIMESTAMP('1/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'), TO_DATE('01/01/2010 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT, EDT)
 Values
   (44333951, 136349891, '36219891030F', 4447, TO_TIMESTAMP('1/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'), TO_DATE('01/04/2010 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT)
 Values
   (47123075, 670095796, '46919640411M', 4447, TO_TIMESTAMP('4/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT)
 Values
   (44258745, 137364687, '46919640411M', 4447, TO_TIMESTAMP('1/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT, EDT)
 Values
   (47123075, 670095796, '46919640412M', 4447, TO_TIMESTAMP('1/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'), TO_DATE('01/01/2010 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT, EDT)
 Values
   (21475309, 28688687, '90820050905M', 4447, TO_TIMESTAMP('4/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'), TO_DATE('01/04/2010 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT, EDT)
 Values
   (45059090, 163943597, '90820050905M', 4447, TO_TIMESTAMP('1/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'), TO_DATE('01/01/2010 00:00:00', 'MM/DD/YYYY HH24:MI:SS'));
Insert into T4
   (MID, PID, SID, SUPPLIER, UPDT)
 Values
   (42383558, 97371230, '90820050905M', 4447, TO_TIMESTAMP('5/1/2010 12:00:00.000000 AM','fmMMfm/fmDDfm/YYYY fmHH12fm:MI:SS.FF AM'));
COMMIT;

Scenario


if all Edt is populated pick the latest based on edt  

select * from t4 where sid='46919640412M' and SUPPLIER=4447

MID         PID         SID             SUPPLIER    UPDT         EDT        PICK
47123075    670095796    46919640412M    4447       1/1/2010     1/1/2010    1


if all edt is null pick the latest based on updt 

select * from t4 where sid='46919640411M'  and SUPPLIER=4447

MID             PID         SID         SUPPLIER    UPDT    EDT    PICK
44258745    137364687    46919640411M    4447    1/1/2010         
47123075    670095796    46919640411M    4447    4/1/2010           1


if edt is populated pick the one based on latest updt with out considering the edt not null 
select * from t4 where sid='90820050905M'  and SUPPLIER=4447

MID          PID             SID        SUPPLIER        UPDT    EDT             PICK
45059090    163943597    90820050905M    4447        1/1/2010   1/1/2010    
42383558    97371230    90820050905M    4447        5/1/2010                    1
21475309    28688687    90820050905M    4447        4/1/2010    1/4/2010    

if all edt is found pic the latest based on edt. 

select * from t4 where sid='36219891030F'  and SUPPLIER=4447


MID         PID             SID         SUPPLIER    UPDT         EDT        PICK
47016634    670608153    36219891030F    4447     1/1/2010     1/1/2010    
44333949    136349891    36219891030F    4447     1/1/2010     1/5/2010       1
44333951    136349891    36219891030F    4447     1/1/2010     1/4/2010   
    I tried like this its not satisfying all the scenarios.


    SOME mediums,
    nest,
    SID,
    provider,
    Shift,
    EDT,
    ROW_NUMBER)
    MORE THAN
    (
    ORDER BY CASE WHEN edt IS NOT NULL THEN ELSE END DESC edt SYSDATE
    )
    Pick
    T4
    WHERE sid = '36219891030F' AND provider = 4447


    Thank you

    Alen

    With the help of analytical functions;

    select sid,
       supplier,
       updt,
       edt,
       case
          when (cnt_edt = cnt_all and edt = max_edt)
               or (cnt_edt != cnt_all and updt = max_updt) then
           1
        end pick1
from (select t4.*,
             count(edt) over(partition by sid, supplier) cnt_edt,
             count(*) over(partition by sid, supplier) cnt_all,
             max(updt) over(partition by sid) max_updt,
             max(edt) over(partition by sid) max_edt
      from t4)
order by 1,2,3,4;

SID             SUPPLIER UPDT                      EDT         PICK1
------------- ---------- ------------------------- ----------- -----
36219891030F        4447 10-01-01 00:00:00,000000  01/01/2010
36219891030F        4447 10-01-01 00:00:00,000000  04/01/2010
36219891030F        4447 10-01-01 00:00:00,000000  05/01/2010      1
46919640411M        4447 10-01-01 00:00:00,000000
46919640411M        4447 10-04-01 00:00:00,000000                  1
46919640412M        4447 10-01-01 00:00:00,000000  01/01/2010      1
90820050905M        4447 10-01-01 00:00:00,000000  01/01/2010
90820050905M        4447 10-04-01 00:00:00,000000  04/01/2010
90820050905M        4447 10-05-01 00:00:00,000000                  1

    Edited by: MScallion may 7, 2010 14:24 - replaced braces with! =

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