SQL LOGIC

I have a question regarding a SQL statement that I wrote. The following SQL statement brings back no records:
SELECT PROP_BOOK_SI.EMP_ID,
AMPEMP.CLOCK_NUMBER,
AMPEMP.LAST_NAME,
AMPEMP.FIRST_NAME
FROM PROP_BOOK_SI
LEFT JOIN AMPEMP
ON AMPEMP.EMP_ID = PROP_BOOK_SI.EMP_ID
LEFT JOIN ENDED_MISSION
ON ENDED_MISSION.EMP_ID = PROP_BOOK_SI.EMP_ID
WHERE PROP_BOOK_SI.EMP_ID != ENDED_MISSION.EMP_ID
AND PROP_BOOK_SI.AUDIT_DATE IS NULL
However, if I write the SQL statement in this fashion, it brings back records:
(SELECT PROP_BOOK_SI.EMP_ID,
AMPEMP.CLOCK_NUMBER,
AMPEMP.LAST_NAME,
AMPEMP.FIRST_NAME
FROM PROP_BOOK_SI
LEFT JOIN AMPEMP
ON AMPEMP.EMP_ID = PROP_BOOK_SI.EMP_ID
LEFT JOIN ENDED_MISSION
ON ENDED_MISSION.EMP_ID = PROP_BOOK_SI.EMP_ID
WHERE PROP_BOOK_SI.AUDIT_DATE IS NULL)
MINUS+
(SELECT
PROP_BOOK_SI.EMP_ID,
AMPEMP.CLOCK_NUMBER,
AMPEMP.LAST_NAME,
AMPEMP.FIRST_NAME
FROM PROP_BOOK_SI
LEFT JOIN AMPEMP
ON AMPEMP.EMP_ID = PROP_BOOK_SI.EMP_ID
LEFT JOIN ENDED_MISSION
ON ENDED_MISSION.EMP_ID = PROP_BOOK_SI.EMP_ID
WHERE PROP_BOOK_SI.EMP_ID = ENDED_MISSION.EMP_ID)
Logically, it appears to me that both SQL statements are the same. Why the difference in output?
Edited by: 969700 on Nov 5, 2012 10:19 PM

I don't exactly understand the human logic you need to implement - please, explain your purpose. Do you need to return the result of the left join, where the rows doesn't match and the resulting outer joined field contains null?
If so, try smth like this:
SELECT PROP_BOOK_SI.EMP_ID,
AMPEMP.CLOCK_NUMBER,
AMPEMP.LAST_NAME,
AMPEMP.FIRST_NAME
FROM PROP_BOOK_SI
LEFT JOIN AMPEMP
ON AMPEMP.EMP_ID = PROP_BOOK_SI.EMP_ID
LEFT JOIN ENDED_MISSION
ON ENDED_MISSION.EMP_ID = PROP_BOOK_SI.EMP_ID
WHERE (ENDED_MISSION.EMP_ID IS NULL AND PROP_BOOK_SI.EMP_ID IS NOT NULL)
AND PROP_BOOK_SI.AUDIT_DATE IS NULL
It must return all pairs where fields doesn't match and exclude rows with both null fields
Edited by: apiminov on 05.11.2012 23:47

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Hi,
Keen2Learn wrote:
Hi All,
I am really greatful to all fo you for all your replies and comments. I change ORDER table to ORDERS. All you replies worked for me but there is some slight change in scenario which i need to discuss with you all.
E.g: Table A has 10 rows like below:
Id Counts Type
99 10 A
999 13 A
9999 7 C
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999 2 C
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888 2 CIf you'd like help, please post CREATE TABLE and INSERT statements for your sample data (including table b as it is before the UPDATE or MERGE).
I populate data in Orders column Table B based on id, by grouping sum of counts for that id in table A.
Id 999 has highest sum(count) as 15, so it has orders as 1 in Table B and do same for descending counts for each Id.
Table B has 5 rows like below:
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99 2
999 1
88 4
777 3
555 5
Assume Table B as static(no new record comes in it) but only its Orders changes for each Id based on counts for that Id in Table A. As you see, Table B has id 555 which is not in Table A, so we need to update its orders to the highest number by taking its Count as 0(zero). Sorry, it's unclear what you want to do.
Post what you'd like table b to look like after the UPDATE or MERGE.
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GROUP BY Id
ORDER BY rnk DESC;
i NUMBER := 1;
begin
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loop
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Kramer wrote:
Hi
So.. do we have to pay for the feature regarding sql tuning advisor?
Can we use the dbms_sqltune package for free in oracle?
No, you need the license. Please read below,
http://download.oracle.com/docs/cd/E11882_01/license.112/e10594/options.htm#CIHFIHFG
I `m doing below test on my Linux. I installed an oracle on it and only for study purpose so didn`t pay.
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GENERAL INFORMATION SECTION
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http://download.oracle.com/docs/cd/E11882_01/server.112/e16638/sql_tune.htm
HTH
Aman....

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SQL and PL/SQL FAQ
I have no idea what data is in the DB & no idea what the result set should be or why?

Help with sql logic

I have two tables some_table1 and some_table2
desc some_table1
Name Type
ID NOT NULL VARCHAR2(16)
NAME VARCHAR2(25)
desc some_table2
Name Type
ID NOT NULL VARCHAR2(16)
STATUS VARCHAR(20);
The requirement is to concatenate INATIVE status value to ID with status = 'INACTIVE' in some_table2.
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'INACTIVE' || some_table1 name, the question is some_table1 have a lots of names that the length is already 25
characters, the requirement want Inative||' '||name inrespective of the name length, I am not allow to increase the name datatype length , but can reduce name to allow for the Inactive||' '||
declare
cursor c1 IS
select cst1.id,cst1.name,cst2.status
from some_table1 cst1, some_table2 cst2
where cst1.orgid = cst2.orgid
and cst2.status = 'INACTIVE';
c1_data c1%rowTYpe;
BEGIN
OPEN c1;
LOOP
FETCH C INTO c1_data ;
EXIT WHEN C1%NOTFOUND;
UPDATE some_table1
SET NAME = c1_data.status||' '|| c1_data.name
where id = c1_data.id;
END LOOP;
CLOSE;
END;
ORA-12899: value too large for column "TEST"."ID"."NAME" (actual: 34, maximum: 25)
I want to be able to fit the update in inrespctive of the name length, I need a logic to truncate the name so as not to exceed the maximum size.
Thank you.

I found the solution. sometable2.status||' '||substr(sometable1.name,1,25-9) since inactive with a space is 9 xters.
Thank you everyone.
Edited by: Ade2 on Feb 11, 2009 5:26 PM

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     select d.area_id
             , d.ORGANIZATION_NUMBER org_id
             , d.PARAM_INFO_KEY
             , i.PARAM_INFO_NAME
             , case when d.param_info_key in (400)
                                  then 'Gas'
                      when d.param_info_key in (410, 700)
                              then 'Ethane'
                      when d.param_info_key in (420, 680)
                              then 'Propane'
                      when d.param_info_key in (430, 690)
                              then 'Butane'
                      when d.param_info_key in (440, 670)
                              then 'Pentane'
                end as product
             , d.old_value
             , d.new_value
             , m.CHANGE_DATE_TIME
             , max(m.CHANGE_DATE_TIME) over(partition by area_id, organization_number,d.param_info_key) max_change_date
             , m.PERIOD_KEY
             , m.change_comment
     from accruals2.accrual_parm_chng_hist_detail d
           , accruals2.accrual_parm_chng_hist_master m
           , accruals2.accrual_period p
           , accruals2.accrual_param_info i
     where d.PARM_CHNG_HIST_MASTER_KEY = m.PARM_CHNG_HIST_MASTER_KEY
            and m.PERIOD_KEY = p.PERIOD_KEY
            and d.PARAM_INFO_KEY = i.PARAM_INFO_KEY
            and d.param_info_key in (400, 410, 700, 680, 430, 690, 440, 670)
            and area_id = 1013
            and p.ACCOUNTING_DATE = date '2010-04-30'
) x
where x.change_date_time = x.max_change_date
order by x.area_id, x.org_id
       , x.product, x.PARAM_INFO_KEYIt returns a data set that looks like this:
AREA_ID     ORG_ID     PRODUCT     FACILITY_AVERAGE_PRICE     ROYALTY_RATE_ADJUSTMENT
1013          1     Butane          0.08
1013          1     Butane                                             0.0015
1013          1     Ethane          0.06
1013          1     Ethane                                             0.003
1013          1     Gas               -0.1
1013          1     Pentane          0.09
1013          1     Pentane                                             0.006
1013          1     Propane                                             0.007

And...............?

SQL LOGIC

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