Update using Merge

Hi all

I'm using Oracle 11.2.0.3.

I am trying to run this code:

MERGE INTO prop p
  USING ad a
    ON (a.prop_id = p.id)
  WHEN MATCHED THEN
    UPDATE SET p.description = a.description;

But I get this error.

ORA-30926: failed to get a stable set of rows in the source tables.

How can I perform this update taking into account the reason for that error is the relationship of 1 m between PROP and AD picture.

Where each Prop story line has 1 or more child table AD that have the same Description

Create Table PROP (ID number PRIMARY KEY,  description varchar2 (4000))


Create Table AD  (ID number PRIMARY KEY , PROP_ID NUMBER , description varchar2 (4000))
ALTER TABLE "AD" ADD CONSTRAINT "AD_PROP_FK" FOREIGN KEY ("PROP_ID")
REFERENCES "PROP" ("ID").

Kind regards

Hello

Similar to the solution of Paul:

MERGE INTO prop p

WITH THE HELP OF)

SELECT prop_id

MIN (description) AS min_description

From ad

GROUP BY prod_id

)         a

WE (a.prop_id = p.id)

WHEN MATCHED THEN UPDATE

SET a.min_description = p.description

;

The difference is that this statement does not raise an error if the description is not unique for each value of prod_id in ad.  (Maybe it's a good or a bad feature.)

Instead of MIN, you can use MAX, STATS_MODE or, with a few adjustments, LISTAGG.

Tags: Database

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    Summary of the issue: My table contains duplicate data (only difference being 2 fields reason viewer_org & interest) and rather than the operation/processing multuple lines I want to assign the org of duplicate records Viewer and then I can hold 1 row, which has a list of org that can consult them.

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5AA             12345 5BB        5430
5BB             32165 5CC        430
5BB             32165 5AA        5430
5BB             32165 5BB        6543
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from COPY_TEST 
order by GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG;
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---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
     12345 5AA        6543       5AA        5AA        5BB        0          0                   1
     12345 5BB        5430       5AA        5BB        0          0          0                   2
     32165 5AA        5430       5BB        5AA        5BB        5CC        0                   1
     32165 5BB        6543       5BB        5BB        5CC        0          0                   2
     32165 5CC        430        5BB        5CC        0          0          0                   3
     98765 5AA        0          YAA        5AA        5BB        0          0                   1
     98765 5BB        543        YAA        5BB        0          0          0                   2
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12345     5BB     5430     5AA                    
32165     5AA     5430     5BB                    
32165     5BB     6543     5BB     5BB     5AA     5CC     
32165     5CC     430     5BB                    
98765     5AA     0     YAA                    
98765     5BB     543     YAA     5AA     5BB          
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     RANK() OVER (PARTITION BY GEN_REC ORDER BY GEN_REC ,VIEWER_ORG ,INTEREST_REASON,OWNER_ORG) rank
FROM
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ORDER BY
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     VIEWER_ORG ,
     INTEREST_REASON,
     OWNER_ORG
)
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               decode(cl_3,'0',null,cl_3)
          FROM
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     CASE
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          WHERE
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FROM
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GEN_REC                VIEWER_ORG INTEREST_REASON CL_1       CL_2       CL_3       CL_4
---------------------- ---------- --------------- ---------- ---------- ---------- ----------
12345                  5AA        6543            5AA        5BB
12345                  5BB        5430
32165                  5AA        5430
32165                  5BB        6543            5AA        5BB        5CC
32165                  5CC        430
98765                  5AA        0
98765                  5BB        543             5AA        5BB                              

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  • Must use MERGE, COPY or UPDATE to restore data

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                                           --and wo.item = '114R2050-35'
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                                        and wo_rtg.operation = rt.operation
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)
    {color: #ff0000} ORA-01427: einreihig subquery returns multiple rows

    {color} {color:#000000}__________________________________________________
    * Just to show you an idea of what I {color: #00ff00} + really + want. * {color}
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select 5 pk_id, 103 rout_key, 0 val from dual UNION ALL
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update
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when not matched then
  insert (WORT.pk_id,
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          NULL);

select * from WORT;

drop table RMT succeeded.
drop table WORT succeeded.
create table succeeded.
create table succeeded.
alter table WORT succeeded.
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PK_ID                  ROUT_KEY               VAL
---------------------- ---------------------- ----------------------
1                      101                    20
2                      101                    20
3                      102                    10
4                      102                    10
5                      103                    -30
6                      103                    -30
7                      105                    0                      

7 rows selected

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    -Abe

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/
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