Subselect in update

Hello,
i want to write an sql-update statement where a field through a part of another field will be supplemented.
example:
update tabelle set targetDirectiory = ' export/home/VALUE_FROM_FIELD x' where blablabla
This should work as a subselect ?but I do not know how i can merge the strings
Thanks a lot.
Lutz

It could have been better if you would have provided some supporting data. Anyway
You can do it like
UPDATE emp       e
   SET dept_name = 'DEPT-'||(SELECT d.dept_name
                               FROM dept          d
                              WHERE d.dept_id     = e.dept_id
WHERE blahblahblah;Regards
Arun

Similar Messages

Nested Subselect in UPDATE statement

Hi everybody,
I have the following problem: There are two tables FOO and BAR that both have columns X and Y and a primary key. I want to fill the values X and Y of FOO with the values X and Y from BAR where FOO.key = BAR.key . There may be multiple rows from BAR with the same key so I simply select the first one. The query would look like
UPDATE foo f
   SET ( x, y ) = ( SELECT *
                      FROM ( SELECT b.x, b.y
                               FROM bar b
                              WHERE f.key = b.key )
                     WHERE ROWNUM = 1 );However, this doesn't work because the alias F is not known inside the nested subquery. If I remove the outer subquery ( the one with ROWNUM=1 ) it works fine. But I need to limit the result to a single row ( in the real application I sort the innermost query by date ). Why does Oracle forget the meaning of alias F within the nested subquery?
Pat

Hi, Pat,
A subquery can be correlated only to its immediate parent query, not its grandparent.
You can get the results you want using MERGE instead of UPDATE.
You can also get the same results with only one sub-query, something like this:
UPDATE foo f
   SET ( x, y ) = ( SELECT MAX (x) KEEP (DENSE_RANK LAST ORDER BY a_date)
                           ,        MAX (y) KEEP (DENSE_RANK LAST ORDER BY a_date)
              FROM   bar
              WHERE key     = f.key
            );I suspect MERGE will be more efficient.
Edited by: Frank Kulash on Mar 9, 2010 11:02 AM

For r in (select) loop: execution plan question

Hi there,
I have a procedure which does the following (on Oracle 11.1.0.7):
begin
for r in (select col1,max(col2) as col2 from tab@remote_db group by col1 ) loop
    update tab2
       set col_a = r.co1
       where col_b = r.col2;
    commit;
end loop;
end;The subselect from the remote table delivers about 4000 rows.
When executing fast, the procedure runs about 20 seconds, the trace shows that the select is executed 1 time, fetches 49 times. The update executes 4000 times.
When executing slow, the procedure runs about 20 minutes (!), the trace shows that the select is executed 1 times, fetches 4000 times. The update executes 4000 times.
This happens without changing the code, from the same client (sqlplus on the server, same version as database).
Can anyone probably give me a clue how I could track down the plsql execution steps like the optimizer trace that let you see why a certain sqlplan was not taken or what might cause that change in behavior?
I cannot produce that behavior at will - most times the procedure runs fast.
thanks,
Heimo

Hi again,
regarding the "faulty test" and what is fastest: user tested both versions and came up with the for-loop to satisfy him best. I would, of course, utilize event 10046 and tkprof and a repeatable dataset to have solid data. Sorry for not setting enough emphasis on my real question, which is described in the following.
But, and that is what is really causing awkward feelings for me: when doing plain sql, I can use events 10046, 10053 and learn from the tracefiles why a decision was taken (now that is making me feel good, actually). But when it comes to plsql, I have not yet such a handy toolset that helps me understand what influences the plsql-engine to go this or that way.
Thus, I valued the posts pointing to dbms_trace and plsql_optimization_level as helpful answers.
Because of that I learned about the views %_PLSQL_OBJECT_SETTINGS and remembered to check for other plsql-initora settings.
I also verified that neither the 10046 nor the 10053 trace files contain any reference to plsql-parameters/settings, and that the 10053 trace only shows the subselect and update, but no info if it would "bulkify" or not.
Meanwhile I did start to utilize dbms_trace (which causes the statement to go the unbulkifyed by the way) and maybe I can learn from that output or from following posts?
best regards
Heimo

UPDATE with subselect

I'm trying to write an update statement using a subselect. I'm comfortable doing this in MS SQL, but am new to Oracle.
Can someone please show me why my DDL is not liked? I'm getting an error "SQL command not properly ended".
Any help would be appreciated.
Thank you.
Robert
DDL:
update lai
set registrationEndDate=firstMeeting-2
from
(select laim.learningActivityInstanceID,
     min(meetingStart) as firstMeeting
     from DRlearningActivityInstance lai
     inner join drLAInstanceMeeting laim
     on lai.id=laim.learningActivityInstanceID
     group by laim.learningActivityInstanceID) A,
     drLearningActivityInstance lai
     where a.learningActivityInstanceID= lai.id

Not sure to understand what your update should do, but the correct syntax could be something like :
update drLearningActivityInstance lai
set registrationEndDate=
(select min(meetingStart) -2
from drLAInstanceMeeting laim
where lai.id=laim.learningActivityInstanceID
group by laim.learningActivityInstanceID)
where lai.id = <value>;
Without the where condition with an external value, all drLearningActivityInstance rows would be updated.
See [url http://download-west.oracle.com/docs/cd/B14117_01/server.101/b10759/statements_10007.htm#sthref7335]UPDATE documentation
By the way, UPDATE is a DML, not a DDL.

Using NVL function in subselect of an update

Hi,
nvl is not working in my situation
Here is my select
SELECT nvl(a.id, 'WAS NULL') FROM table_1 a, table_2 b
WHERE a.id=b.id;
Now here I get NULL instead of 'WAS NULL' as I accepted.
Table a and table b do not have any identical ids, still I need to be a value returned.
Is there a way?
Thanks

Well this works for me:
SQL> CREATE TABLE table_1 (id INT NOT NULL, val VARCHAR2(10) NOT NULL);
Table created.
SQL> CREATE TABLE table_2 (id INT NOT NULL, val VARCHAR2(10) NOT NULL);
Table created.
SQL> INSERT INTO table_1 VALUES (1, 'A');
1 row created.
SQL> INSERT INTO table_2 VALUES (2, 'B');
1 row created.
SQL> UPDATE table_1 t1
2 SET    val =
3         ( SELECT NVL(t2.val,'Was NULL') FROM table_2 t2
4           WHERE t2.id = t1.id );
SET    val =
ERROR at line 2:
ORA-01407: cannot update ("WILLIAM"."TABLE_1"."VAL") to NULL
SQL> UPDATE table_1 t1
2 SET    val =
3         NVL
4         ( ( SELECT t2.val
5             FROM   table_2 t2
6             WHERE t2.id = t1.id )
7         , 'Was NULL');
1 row updated.
SQL> SELECT * FROM table_1;
        ID VAL
         1 Was NULL
1 row selected.

Help in update instruction, please

hi,
i can't make progress in my update instruction and need some help. Oracle makes an ora-00907 message and says that a bracket is missing but in this case it doesn't make sense.
update DM_MESSDATEN
set DM_MESSDATEN.FAUNA_ID=1 where MISSION_ID in (select DM_MESSDATEN.MISSION_ID from
DM_MISSION, DM_MESSDATEN where DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID AND
measure_name='Transit CT-WB' AND DM_MESSDATEN.FAUNA_ID=999999 AND rownum <2 order by mission_id);
i used this as standalone and it works fine but within update i need a subselect and can't use this join,
select DM_MESSDATEN.MISSION_ID from
DM_MISSION, DM_MESSDATEN where DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID AND
measure_name='Transit CT-WB' AND DM_MESSDATEN.FAUNA_ID=999999 AND rownum <2 order by mission_id;

Furthrmore, I don't understand your query :
You wrote :
update DM_MESSDATEN
set DM_MESSDATEN.FAUNA_ID=1
where MISSION_ID in (select DM_MESSDATEN.MISSION_ID
                     from   DM_MISSION, DM_MESSDATEN
                     where DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID
                     AND    measure_name='Transit CT-WB'
                     AND    DM_MESSDATEN.FAUNA_ID=999999
                     AND rownum <2But where DM_MISSION.MISSION_ID=DM_MISSION.MISSION_ID seems always true, so why add this one ? Or is it a mistake ?
That's not very clear in my head...
Nicolas.

Subselect in EJB 2.1

Hi,
what's the best way to do a query like this
UPDATE
   table
WHERE id = (
   SELECT
      id
   FROM
      table
   WHERE
      <condition>
   ORDER BY id
   LIMIT 1
)in EJB 2.1 while taking into consideration that subselects are not transaction safe? If you have any idea, please tell me :-)
Thanks
-Danny

Hm... looks, better, right! :)
But I guess this can't be done using EJBQL. Is is race condition safe to
write a finder with the join part like this:
SELECT OBJECT(a) FROM tableA AS a, tableB as B
WHERE a.id = b.id AND a.reservedForID = 0 AND b.<col> = <condition>and then do a
TableAValue aVal= aLocal.findBy...();
aVal.setReservedForID(id);
aLocal.update(aVal);without havind a second thread finding the exact same entry? Is it correct,
that the container has to lock the entry that is returned?

Update with join

Hello Everybody
I have 3 tables in a maxdb 7.6 database
rbarbeitsplanpos key=rbarbeitsplanposid column gewichtung,...
rbaplposausf key=rbaplposausfid columns rbarbeitsplanposid,...
rbqspruefpos key=rbqspruefposid columns rbaplposausfid,gewichtung,...
Now i want to update gewichtung in rbqspruefpos with the value of gewichtung in the corresponding record in rbarbeitsplanpos.
The way to find the correct value is:
From rbqspruefpos with rbaplposausfid into rbaplposausf
From rbaplposausf with rbarbeitsplanposid to rbarbeitsplanpos
I found this hit:
A simple example of the power of including joins in an Update Statement:
Update Tbl1 set tbl1.field1=tbl2.field2*.10,
from Tbl1 join tbl2 on tbl1.PKfield=tbl2.tbl1FK
This will update all the joined rows in tbl1 to 10% of the values in tbl2.
I code:
update rbqspruefpos set gewichtung = rbarbeitsplanpos.gewichtung,
from rbqspruefpos
join rbaplposausf on rbqspruefpos.rbaplposausfid = rbaplposausf.rbaplposausfid
join rbarbeitsplanpos on rbarbeitsplanpos.rbarbeitsplanposid = rbaplposausf.rbarbeitsplanposid
General error;-5016 POS(73) Missing delimiter: =
This one works without errors:
update rbqspruefpos set gewichtung = (select rbarbeitsplanpos.gewichtung from rbarbeitsplanpos
join rbaplposausf on rbarbeitsplanpos.rbarbeitsplanposid = rbaplposausf.rbarbeitsplanposid
join rbqspruefpos on rbqspruefpos.rbaplposausfid = rbaplposausf.rbaplposausfid)
but all rbqspruefpos.gewichtung are filled with the same value?
The first value found in rbarbeitsplanpos.
Any help welcomed
Best regards
Albert

> I code:
> update rbqspruefpos set gewichtung = rbarbeitsplanpos.gewichtung,
> from rbqspruefpos
> join rbaplposausf on rbqspruefpos.rbaplposausfid = rbaplposausf.rbaplposausfid
> join rbarbeitsplanpos on rbarbeitsplanpos.rbarbeitsplanposid = rbaplposausf.rbarbeitsplanposid
>
> General error;-5016 POS(73) Missing delimiter: =
>
>
> This one works without errors:
> update rbqspruefpos set gewichtung = (select rbarbeitsplanpos.gewichtung from rbarbeitsplanpos
> join rbaplposausf on rbarbeitsplanpos.rbarbeitsplanposid = rbaplposausf.rbarbeitsplanposid
> join rbqspruefpos on rbqspruefpos.rbaplposausfid = rbaplposausf.rbaplposausfid)
>
> but all rbqspruefpos.gewichtung are filled with the same value?
> The first value found in rbarbeitsplanpos.
Looks like you're doing it wrong.
Subselects need to be enclosed in brackets.
See [Subquery (subquery)|http://maxdb.sap.com/doc/7_6/60/515f3eca2a11d2a97100a0c9449261/content.htm]
Only scalar subselects (these are the ones that by their very structure can only produce zero or one rows in the result set) can omit the brackets.
The database cannot know that there is only one value in this column - you may try and put a aggregation function round it.
regards,
Lars

Update a subst() with other substr() value from same row

Oracle 10.2.4.0
Given table MYTEST:
Name                                      Null?    Type
NAME_IND                                           VARCHAR2(15)
LOCAL_DATA                                         VARCHAR2(30)need to update every row, effectivley doing something like this:
update mytest
set substr(local_data,1,4) = substr(local_data,27,30)Obviously that code doesn't actually work, but at least implies what I need to do, and am having a hard time getting my head wrapped around exactly how to make it happen.
Expected input would be like:
NAME_IND        LOCAL_DATA
bert            12345678901234567890123456AAAA
bigbird         12345678901234567890123456BBBB
ernie           12345678901234567890123456CCCC and expected result would be
NAME_IND        LOCAL_DATA
bert            AAAA5678901234567890123456AAAA
bigbird         BBBB5678901234567890123456BBBB
ernie           CCCC5678901234567890123456CCCC

Frank Kulash wrote:
Hi,
In the SET clause of an UPDATE statement, the items to the left of the = signs must be columns in your table.
If you want to change local_data, in whole, or in part, then you say
SET local_data = ...Now, what is the value to which you want to set it? If I understand correctly, it's the concatenation of two things
(1) The 4 characters starting a position 27 of the original local_data, and
(2) the part of the original local_data starting at position 5
The way to code that is
UPDATE mytest
SET     local_data = SUBSTR (local_data, 27, 4)
            || SUBSTR (local_data, 5)Remember, the 3rd argument to SUBSTR is the length of the substring you want to extract, not the ending position.Right. Actually I had thought of that, but for some reason was thinking there would need to be a subselect, or even possibly an anonymous block of PL/SQL to get the value of the substr()'s for the 'current' row. After posting, shutting down, and heading home, my head cleared a bit and so was all set to give it a try, and it was exactly what I needed. Thanks for the lead.

Automatically Update a UDF in the Item Master

Hi Experts,
I am new to SAP Business One. I need to update automatically the value of a UDF. The value will be calculated using data from related tables. Calculation includes -summation, divide and minus etc. Could you provide guide.
For example a new UDF should contain the suggested quantity to order in the Item Master Data. This is calculated considering the running average sales quantity as of current time for this month and deduct the available quantity on hand and also deduct the quantity already ordered (arriving soon to be delivered to warehouse).
Formula:      = ( S / N ) * D - ( OnHand ) - ( Ordered )
where   S = Quantity sold so far within this month
              N = days count ( if today is March 18, N = 18 )
              D = number of days for this month. (can be 28, 30 or 31 days)
This means that the data in the database must also be updated. I appreciate your input.
If possible, the OITW, MinOrder will be updated instead of a UDF.

Haven't tested it properly, but something like this....
select
(s0.qty / datepart(day,getdate())) * datepart(day,(DateAdd(day, -1, DateAdd(month, DateDiff(month, 0, getdate())+1, 0)))) - t0.onhand - t0.onorder
from
oitm t0
left join
(select     t0.itemcode,
          sum(t0.quantity) as qty
          from inv1 t0
          inner join
          oinv t1
          on t0.docentry = t1.docentry
          where datepart(month,t1.docdate) = datepart(month,getdate())
          and datepart(year,t1.docdate) = datepart(year,getdate())
          group by t0.itemcode) s0
on t0.itemcode = s0.itemcode
where t0.itemcode = $[OITM.ITEMCODE]
Currently this adds up the qty from all invoices, if you want to subtract credit notes you just have to build in a second subselect from ORIN and RIN1 and subtract them off.
Hope this helps.

Update returned more then one row

Hi ,
Can you help me with this?
I have the following:
update admuser.udfvalue
set udf_number=
(select sum(nvl(uv.udf_number,0))
from admuser.projwbs pw, admuser.udfvalue uv
where pw.proj_id=uv.proj_id
group by pw.proj_id, pw.parent_wbs_id, pw.phase_id,
uv.proj_id,pw.wbs_name, pw.wbs_name)
where proj_id = any
(select pw.proj_id
from admuser.projwbs pw, admuser.udfvalue uv
where pw.proj_id=uv.proj_id
group by pw.proj_id, pw.parent_wbs_id, pw.phase_id,
uv.proj_id,pw.wbs_name, pw.wbs_name)
and the error: ERROR at line 3:
ORA-01427: single-row subquery returns more than one row
thank you

Hi,
You subselect isn't linked to your target table,
update admuser.udfvalue target
   set udf_number =
          ( select sum(nvl(uv.udf_number, 0))
               from admuser.projwbs pw
              where pw.proj_id = target.proj_id
           group by pw.proj_id
                   ,pw.parent_wbs_id
                   ,pw.phase_id
                   ,pw.proj_id
                   ,pw.wbs_name
                   ,pw.wbs_name)
where proj_id = any ( select pw.proj_id
                          from admuser.projwbs pw, admuser.udfvalue uv
                         where pw.proj_id = uv.proj_id
                      group by pw.proj_id
                              ,pw.parent_wbs_id
                              ,pw.phase_id
                              ,uv.proj_id
                              ,pw.wbs_name
                              ,pw.wbs_name);Regards
Peter

What is a easy way to update colors in a FW design?

Hello is it possible to use Fireworks swatch to update colors at once?
In this example if I want to update the color #9A6600 I must update the menu buttons submenu and the text (the origal contains more items)
For recurring items I am using the style option but every style has one of the basic colors of the thema.

Interesting question!
Styles are like symbols. If you change a style definition, you can update all instances of that style on the canvas. So one way to change color quickly across multiple objects would be to select an object with a style attached to it, change its fill color, and then click the Redefine Style button in the Properties panel. All the instances of that style will be changed to reflect the new fill color.
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Tecra M9-136 - BSOD during Vista SP2 update

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It will start in Safe Mode but on a normal boot-up, Vista SP1 gets through the fingerprint recognition and then fails with the same BSOD (it doesn't get as far as displaying the desktop).
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thanks

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I tried System Restore but the only available restore point was the SP2 installation. I thought Vista was supposed to save a restore point every 24 hours even if nothing new had been installed.
I've now found in System Information / Windows Error Reporting several messages like this:
28/09/2009 12:08 Windows Error Reporting Fault bucket 0x7E_NULL_IP_DRVNDDM+57bd, type 0
Event Name: BlueScreen
Response: None
Cab Id: 0

Problem signature:
P1: 
P2: 
P3: 
P4: 
P5: 
P6: 
P7: 
P8: 
P9: 
P10: 

Attached files:
C:\Windows\Minidump\Mini0928 09-04.dmp
C:\Users\me\AppData\Local\Te mp\WER-75660-0.sysdata.xml
C:\Users\me\AppData\L ocal\Temp\WER7D78.tmp.version.txt
& #x000d;
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C:\Users\me\AppData\Local\Mic rosoft\Windows\WER\ReportArchive\Report06d1c4b5

Cannot open and update IPhoto after upgrading to OXYosemite

From the App store, I downloaded and installed OXYosemite. There are 2 more updates available: iPhoto and iMovie. When I try to upload them, the notice I get is "Update Unavailable with This Apple ID This update is not available for this Apple ID either because it was bought by a different user or the item was refunded or cancelled."
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Thanks, Sev

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Error message: "playlists selected for updating no longer exist"

I tried to update my ipod nano and I guess I had deleted a playlist, but since then, I have not been able to update. Every time I try, I get the following message:
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I read through the manual and thought that maybe rebooting the whole system might work. So I deleted Itunes from my computer and re-installed.
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Subselect in update

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