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
);
Related
Assume I have a table named tab. Tab has a field called "version". Version is sequential.
In Redshift, I would like to update rows in Tab with the value from a previous row. Please tell me how to do this. Essentially:
UPDATE tab
SET tab.fieldA = tabPrior.fieldA
FROM tab tabPrior
WHERE tab.version = tabPrior.version + 1;
I would love to use a JOIN, but this does not seem to work in Redshift.
To Update with a JOIN statement you are better off writing it in a subquery.
UPDATE table
SET
col1 = TT.col1
col2 = TT.col2
FROM (SELECT T1.id, T1.col1, T2.col2
FROM T1
JOIN T2 ON T1. id ON T2. id) AS TT
WHERE table.id = TT.id
Also, I noticed that your syntax is the SET is not correct:
SET fieldA = tabPrior.fieldA
Redshift does not allow for you to pass the table when selecting the column since it goes under the assumption that you are updating 1 table at a time.
SET column = One or more columns that you want to modify. Columns that
aren't listed retain their current values. Do not include the table
name in the specification of a target column. For example, UPDATE tab
SET tab.col = 1 is invalid.
Link: https://docs.aws.amazon.com/redshift/latest/dg/r_UPDATE.html
I am trying to execute a query which is something like:
update table set column=(select column1 from table1);
I just want to store the value from other table to my column
but when i try my sql query it says
ERROR 1242 (21000): Subquery returns more than 1 row
definitely this means my table1 contains more than 1 row so i want to know that is there any way to store data into column from other table with multiple row.
or basically saving content of other table as a text something like
update table set column='Data in text from other table';
You probably need a correlation clause:
update table
set column = (select column1 from table1 where table.col = table1.col);
You need to decide what column(s) are used for the correlation.
it will work as i am getting your requirement.Please let me know if your requirement is other i ll make changes in query
update table_name t1
inner join table1 t2 on t1.id =t2.id
set column =column1
Your nested query returns multiple rows so you encountered this error.
Try in this way
UPDATE FirstTable
SET FirstTable.ColumnName =tbl2.ColumnName
FROM SecondTable tbl2 WHERE tbl2.Id = FirstTable.Id
There should be a common id or something that will help to find exact row.
I appreciate any advice on this..
I have two tables where I have to update a column in my primary table with data that resides in another secondary table. I cannot rely on views, etc as this data has to be able to be edited by the user in APEX in the future. I am basically pre-populating the data for the users to reduce their manual entry.
Primary Table = Table 1
Secondary Table = Table 2
Columns to be updated in Table 1 = FTE_ID, ACCOUNT_TYPE
Columns where the data will come from Table 2 = R_ID, ACCOUNT_TYPE
Common column in both tables = TABLE1.FID AND TABLE2.FID
Here is what I have tried, but I get "single-row subquery returns more than one row" because there are multiple table1.fid rows in table1. I basically want to perform this update for ALL rows where TABLE1.FID = TABLE2.FID.
Here is my attempt:
UPDATE TABLE1
SET TABLE1.FTE_ID =
(SELECT TABLE2.R_ID FROM TABLE2 WHERE TABLE1.FID = TABLE2.FID);
Error:
single-row subquery returns more than one row
Thanks for your help,
You can fix the proximate problem by using aggregation or row number:
UPDATE TABLE1
SET TABLE1.FTE_ID = (SELECT MAX(TABLE2.R_ID)
FROM TABLE2
WHERE TABLE1.FID = TABLE2.FID
);
The subquery can only return one row; it is an "arbitrary" value from the possible matching values.
If the field is a character field and you want all matching values, then perhaps listagg is more appropriate:
UPDATE TABLE1
SET TABLE1.FTE_ID = (SELECT LISTAGG(t2.R_ID, ',') WITHIN GROUP (ORDER BY t2.R_ID)
FROM TABLE2 t2
WHERE TABLE1.FID = t2.FID
);
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;
I have one table with the following columns:
T_RESOLVED_DATE
I_HOUSEHOLD_NUMBER
I_RESOLVED_SET_NUMBER
I_STATION_CODE
I_RESOLVED_START_MIN
I_DURATION
I_PERSON_NUMBER
I_COVIEW_DEMO_ID
Initially, I_COVIEW_DEMO_ID is set to null.
Then I have another table with the following columns:
T_RESOLVED_DATE
I_HOUSEHOLD_NUMBER
I_PERSON_NUMBER
I_AGE
T_GENDER
I_COVIEW_DEMO_ID
I am trying to update I_COVIEW_DEMO_ID in the first table by using the value of I_COVIEW_DEMO_ID in the second table where the T_RESOLVED_DATE, I_HOUSEHOLD_NUMBER, and I_PERSON_NUMBER are equal in both tables. The first table may contain multiple rows with the same DATE, HOUSEHOLD_NUMBER, and PERSON_NUMBER, because the rows can vary by the rest of the columns.
I have tried to do a select and a group by which seems to get me part way there, but I am getting a "single-row subquery returns more than one row" error when I try to update the columns in the first table. This is what I've tried, along with variations of it:
UPDATE
Table1
SET
I_COVIEW_DEMO_ID =
(SELECT
b.I_COVIEW_DEMO_ID
FROM Table1 a,
Table2 b
WHERE a.I_HOUSEHOLD_NUMBER = b.I_HOUSEHOLD_NUMBER AND
a.I_PERSON_NUMBER = b.I_PERSON_NUMBER AND
a.T_RESOLVED_DATE = b.T_RESOLVED_DATE
GROUP BY b.I_COVIEW_DEMO_ID);
Any suggestions?
I was able to get it to work using this statement:
MERGE INTO table1 a
USING
(
SELECT DISTINCT
T_RESOLVED_DATE,
I_HOUSEHOLD_NUMBER,
I_PERSON_NUMBER,
I_COVIEW_DEMO_ID
FROM
table2
) b
ON
(
a.T_RESOLVED_DATE = b.T_RESOLVED_DATE
AND a.I_HOUSEHOLD_NUMBER = b.I_HOUSEHOLD_NUMBER
AND a.I_PERSON_NUMBER = b.I_PERSON_NUMBER
) WHEN MATCHED THEN
UPDATE SET
a.I_COVIEW_DEMO_ID = b.I_COVIEW_DEMO_ID;
As per our discussion on the comments this would be a simple PLSQL block to do what you need. I'm doing direct from my head without test, so you may need to fix some sintaxe mistake.
BEGIN
FOR rs IN ( SELECT I_HOUSEHOLD_NUMBER,
I_PERSON_NUMBER,
I_COVIEW_DEMO_ID,
T_RESOLVED_DATE
FROM Table2 ) LOOP
UPDATE Table1
SET I_COVIEW_DEMO_ID = rs.I_COVIEW_DEMO_ID
WHERE I_PERSON_NUMBER = rs.I_PERSON_NUMBER
AND I_HOUSEHOLD_NUMBER = rs.I_HOUSEHOLD_NUMBER
AND T_RESOLVED_DATE = rs.T_RESOLVED_DATE;
END LOOP;
--commit after all updates, if there is many rows you should consider in
--making commits by blocks. Define a count and increment it whithin the for
--after some number of updates you commit and restart the counter
COMMIT;
END;