I have a table A with null dates (CREATED_ON_DT) in BI database. I need to update those nulls with the right dates from AFLDEV DB using a DB link mtl_system_items_b#afldev. Common key is inventory_item_id in AFLDEV and integration_id in BI DB. I have framed the following query but it does not work:
UPDATE w_product_d
SET w_product_d.CREATED_ON_DT = (SELECT min(creation_date)
FROM mtl_system_items_b#afldev B
where to_char(B.inventory_item_id)=w_product_d.integration_id
and B.organization_id = '102'
AND w_product_d.CREATED_ON_DT IS NULL
and w_product_d.integration_id in (SELECT T.integration_id
FROM (SELECT * FROM w_product_d ORDER BY w_product_d.integration_id )T
WHERE T.CREATED_ON_DT IS NULL)
);
If I run this query it updates all the dates to nulls but I need the opposite to happen i.e. replace null with the right dates.
Please help me out with this! I am doing this on SQL Developer for Oracle DB.
I think you've gotten all tied up between the rows you're updating and the rows you're using to update the column values with.
If you think about it, you're wanting to update rows in your w_product_d table where the created_on_dt is null, which means that your update statement will have a basic structure of:
update w_product_d wpd
set ...
where wpd.created_on_dt is null;
Once you have that, it's easy then to slot in the column you're updating and what you're updating it with:
update w_product_d wpd
set wpd.created_on_dt = (select min(creation_date)
from mtl_system_items_b#afldev b
where to_char(b.inventory_item_id) = wpd.integration_id)
where wpd.created_on_dt is null;
Related
This code is only updating one row, why? It has to do with one of the sub-queries but I am not sure. I'm thinking the WHERE..IN in the UPDATE statement but I am not sure.
UPDATE [sde].[sy1].[Valve_evw]
SET [sde].[sy1].[Valve_evw].[MA]
= (SELECT [sde].[sy1].[Valve_Join_evw].[MC]
FROM [sde].[sy1].[Valve_Join_evw])
WHERE [sde].[sy1].[Valve_evw].[PrimaryKey]
IN (SELECT [sde].[sy1].[Valve_Join_evw].[PrimaryKey]
FROM [sde].[sy1].[Valve_Join_evw]
WHERE [sde].[sy1].[Valve_Join_evw].[MA]
!= [sde].[sy1].[Valve_Join_evw].[MC])
Context:
What I am trying to do is update the MA column in Valve_evw using the MC column in Valve_Join_evw. The PrimaryKey in Valve_evw references equivalent rows as the PrimaryKey in Valve_Join_evw. As in, a single row in Valve_Join_evw will have the same PrimaryKey as a single row in Valve_evw, thus that equivalency can be used to update the records in Valve_evw. Also the MA column is equivalent in both tables. [Note: The Valve_Join_evw table is created with ESRI mapping software using the spatial relationship between the Valve_evw and a separate table, this is how the duplicate rows exist]
I am using database views (hence the '_evw') in SQL Server with a default INSTEAD OF UPDATE trigger. This combination, views and trigger, prevents the use of table joins to do this update. I have also tried MERGE but that will not work either. Therefore I am stuck with the ANSI standard, hence the sub-queries. This script runs with no errors but it only updates a single row whereas there are about 9000 thousand rows in the tables.
The output message:
(1 row(s) affected)
(0 row(s) affected)
First of all let's reduce the eye hurting SQL to what it really is:
update sde.sy1.valve_evw
set ma = (select mc from sde.sy1.valve_join_evw)
where primarykey in (select primarykey from sde.sy1.valve_join_evw where ma <> mc)
WHERE clause
We look for all primarykey in valve_join_evw where a record's ma <> mc. We update all valve_evw records with such primarykey.
SET clause
For a record we want to update, we set ma to the value found with:
select mc from sde.sy1.valve_join_evw
But this query has no where clause, so what value does it select to fill the record's ma field? It selects all mc from valve_join_evw, so the DBMS probably picks one of these values arbitrarily. (It would be better, it raised an error.)
Conclusion
It is very easy to see which records the statement will update.
Which primarykey:
select primarykey from sde.sy1.valve_join_evw where ma <> mc
Which rows:
select *
from sde.sy1.valve_evw
where primarykey in (select primarykey from sde.sy1.valve_join_evw where ma <> mc)
As to the SET clause: Add a WHERE clause to your subquery that relates the record to select to the record to update (same ma? same primarykey?) E.g.:
set ma =
(
select mc
from sde.sy1.valve_join_evw vj
where vj.primarykey = valve_evw.primarykey
and vj.ma = valve_evw.ma
)
Hi there i recomend first to do the select statement and when you are ok with te records retrieved use the same where for the update statement
Here is what the final script looks like.
UPDATE [Valve_evw]
SET [Valve_evw].[MA] =
(
SELECT [Valve_Join_evw].[MC]
FROM [Valve_Join_evw]
WHERE[Valve_Join_evw].[PrimaryKey] = [Valve_evw].[PrimaryKey]
)
WHERE [Valve_evw].[PrimaryKey]
IN (
SELECT [Valve_Join_evw].[PrimaryKey]
FROM [Valve_Join_evw]
WHERE [Valve_Join_evw].[MA]
!= [Valve_Join_evw].[MC]
);
I have an update query in which I am trying to locate data in a column from a single table. All while taking other defined data listed in the query to update another column in the same table once a match has been found with that original search. Below is an example of my update statement. My end goal is to find '003447710' then update AltId to '540112'
UPDATE Site
SET AltId = ('540112'
'540129'
'540142'
'540143')
WHERE CCMFStatus in ('003447710',
'002754540',
'003564370',
'005942870')
I am sure there may already be something like this out there but I am really having trouble on an easy method on how to do this quickly and accurately.
Try this
update site
set altid = a.altid
from
(select altid,CCMFstatus from site) as a
where site.CCMFstatus = a.CCMFstatus
The best way might be multiple update statements:
UPDATE Site
SET AltId = '540112'
WHERE CCMFStatus = '003447710';
And so on.
If not, you can do this with a giant case statement or a join:
WITH values as (
SELECT '003447710' as oldstatus, '540112' as newaltid UNION ALL
SELECT '002754540', '540129' UNION ALL
SELECT '003564370', '540142' UNION ALL
SELECT '005942870', '540143'
)
UPDATE s
SET AltId = va.newaltid
FROM site s JOIN
values v
ON s.CCMFStatus = v.oldstatus;
If you already have the values in a table, then you don't need the WITH statement. You can just use the table.
Have you tried using CASE statement?
UPDATE SITE SET AltID = (CASE
WHEN CCMFStatus = '003447710' THEN '540112'
WHEN CCMFStatus = '002754540' THEN '540129'
END)
WHERE
CCMFStatus in ('003447710', '002754540', '003564370', '005942870');
BR,
I have two databases.
Alarm
TMP
I have a table in Alarm, where in a table there is one empty column with null values.
And I have a single column table in TMP.
I want to copy this single column values to my table in Alarm database.
What I tried so far is,
update [Alarm].[dbo].[AlarmDetails] set Alarm_Message = (select * from [TMP].[dbo].[AlarmDetails$])
where 1=1
The error is
Subquery returned more than 1 value.
Please note this,
NOTE: There is no id column in source table. Only one table & one column, Alarm Message.
I know the cause of error, but how should I modify my SQL.
Thank You.
Here's an example of copying a column:
update dst
set Alarm_Message = src.AlarmMessage
from Alarm.dbo.AlarmDetails dst
join TMP.dbo.AlarmDetails src
on dst.id = src.id
You did not specify how the tables are related, so I assumed they both have an id column.
You need something like this.
update t1
set
t1.<something1> = t2.<something2>
from
[Alarm].[dbo].[AlarmDetails] t1
join [TMP].[dbo].[AlarmDetails] t2 on (t1.<cols1> = t2.<cols2>)
UPDATE results SET results.platform_to_insert = (
SELECT correct_platform
FROM build
WHERE results.BuildID=build.BuildID LIMIT 1
);
I've tried searching for this particular topic here, but haven't found the answer... Anyway, my aim is to update table (let's call it t_item), specifically column owner_id with values depending on another table (t_item_geo which is in turn linked to t_geo).
I'm not entirely sure whether the syntax below is actually valid for update statements.
UPDATE t_item SET owner_id= 6993 WHERE t_item.owner_id in
(SELECT t_item.owner_id FROM
t_item,
t_item_geo,
t_geo
WHERE
t_item.id = t_item_geo.item_id and
t_item_geo.geo_id = t_geo.id and
t_item.owner_id in (SELECT id FROM t_user WHERE network_id='fffffff') and
t_geo.id in (SELECT id FROM t_geo WHERE full_name = 'yyyyyyy')
);
Anyway, my problem with this query is that it updates far more rows than it should - if I separate just the select statement Oracle returns ~750 rows but the udpate itself updates more than 4000 rows. It's almost as if the condition was completely ignored - which would point me to perhaps incorrect syntax.
I need to update specific value in the table based on the select from few other 'joined' tables. Hope it makes sense.
Thanks for any contribution!
UPDATE: sorry - maybe it wasn't clear from the question itself, but the correct number of edited items should be ~750 and not ~4000. Thanks!
try this
MERGE INTO t_item
USING
(
SELECT t_item.owner_id FROM
t_item,
t_item_geo,
t_geo,
t_item.rowid rowid_sub
WHERE
t_item.id = t_item_geo.item_id and
t_item_geo.geo_id = t_geo.id and
t_item.owner_id in (SELECT id FROM t_user WHERE network_id='fffffff') and
t_geo.id in (SELECT id FROM t_geo WHERE full_name = 'yyyyyyy')
) on (rowid = rowid_sub)
WHEN MATCHED THEN
UPDATE SET owner_id= 6993;
I've been trying for a few hours (probably more than I needed to) to figure out the best way to write an update sql query that will dissallow duplicates on the column I am updating.
Meaning, if TableA.ColA already has a name 'TEST1', then when I'm changing another record, then I simply can't pick a value for ColA to be 'TEST1'.
It's pretty easy to simply just separate the query into a select, and use a server layer code that would allow conditional logic:
SELECT ID, NAME FROM TABLEA WHERE NAME = 'TEST1'
IF TableA.recordcount > 0 then
UPDATE SET NAME = 'TEST1' WHERE ID = 1234
END IF
But I'm more interested to see if these two queries can be combined into a single query.
I am using Oracle to figure things out, but I'd love to see a SQL Server query as well. I figured a MERGE statement can work, but for obvious reasons you can't have the clause:
..etc.. WHEN NOT MATCHED UPDATE SET ..etc.. WHERE ID = 1234
AND you can't update a column if it's mentioned in the join (oracle limitation but not limited to SQL Server)
ALSO, I know you can put a constraint on a column that prevents duplicate values, but I'd be interested to see if there is such a query that can do this without using constraint.
Here is an example start-up attempt on my end just to see what I can come up with (explanations on it failed is not necessary):
ERROR: ORA-01732: data manipulation operation not legal on this view
UPDATE (
SELECT d.NAME, ch.NAME FROM (
SELECT 'test1' AS NAME, '2722' AS ID
FROM DUAL
) d
LEFT JOIN TABLEA a
ON UPPER(a.name) = UPPER(d.name)
)
SET a.name = 'test2'
WHERE a.name is null and a.id = d.id
I have tried merge, but just gave up thinking it's not possible. I've also considered not exists (but I'd have to be careful since I might accidentally update every other record that doesn't match a criteria)
It should be straightforward:
update personnel
set personnel_number = 'xyz'
where person_id = 1001
and not exists (select * from personnel where personnel_number = 'xyz');
If I understand correctly, you want to conditionally update a field, assuming the value is not found. The following query does this. It should work in both SQL Server and Oracle:
update table1
set name = 'Test1'
where (select count(*) from table1 where name = 'Test1') > 0 and
id = 1234