I am selecting two values into a temp table.
After I have done this, I want to do an update, to one of the tables I select from, on all the Id's that I just selected into my temp table.
How do I do this?
It sounds pretty simple I just can't really figure out where to begin.
I tried
update table set value = #tempTable.value where id = #temptable.id
but of course that didn't work.
I can, of course, do a select that gives me the update commands, for each entry in the temp table, but I would very much like to do this, in one process instead of having to execute the update commands afterwards.
Do I need to make some foreach from the temp table?
Try this way:
update tab
set value = tt.value
from #temptable tt
where tab.id = tt.id
Try this one -
UPDATE t
SET value = t2.value
FROM [table] t
JOIN #temptable t2 ON t.id = t2.id
Related
I need to get a value from one database for a customer and update another database with that value.
The procedure below works but I need to have it go through table2 and update every customer in table1 with a matching CustomerID. I hate to use the word loop through but as I said, I am very new to this and lost. I have watched videos, and tried to search with no luck. Can someone point me to a tutorial or tell me if I am trying to do something I shouldn't be?
CREATE PROCEDURE dbo.bhshSample
as
BEGIN;
update table1 set
ptall = (
SELECT TOP (1) nsma1_ans
from table2
where nsma1_code = 'ptall'
order by nsma1_tm
)
where CustomerID = '4'
End;
In php, I would loop and do a select distinct CustomerID from table 2
then do the update using the variable I set but I can't seem to figure it out with stored procedure.
Use a correlated subquery, like this:
update table1 set
ptall = (
SELECT TOP (1) nsma1_ans
from table2
where nsma1_code = 'ptall'
and CustomerID = table1.CustomerID
order by nsma1_tm
)
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'm using Oracle SQL Developer and I'm trying combine an update and a select statment into one. I know that Oracle dosen't support FROM or JOINS directly in the update statement and I therefor put the select in a subquery but it still don't work.
I have got two tables; MASTERTABLE and TESTTABLE.
MASTERTABLE contain an ID_NUMBER column and a TESTTABLE_ID column.
TESTTABLE contains a TESTTABLE_ID column and a TEST_COLUMN column.
What I want to do is to update the TEST_COLUMN value while only knowing the ID_NUMBER.
What my statement looks like:
UPDATE TESTTABLE
SET TEST_COLUMN= 'Testvalue'
WHERE TESTTABLE.TESTTABLE_ID IN (SELECT MASTERTABLE.TESTTABLE_ID
FROM MASTERTABLE
WHERE ID_NUMBER=11);
But I get stuck in some kind of loop. Where did I go wrong?
I have faced the same problem. The solution is usage of MERGE operation instead of UPDATE.
MERGE INTO TESTTABLE t
USING
(
SELECT m.ID_NUMBER num,
m.TESTTABLE_ID id
FROM MASTERTABLE m
) newnum ON (t.TESTTABLE_ID = newnum.id)
WHEN MATCHED THEN UPDATE
SET t.TEST_COLUMN = newnum.num;
You can try any one of this in Oracle
Normal Update
UPDATE
TESTTABLE
SET
TEST_COLUMN= 'Testvalue'
WHERE
EXISTS
(SELECT MASTERTABLE.TESTTABLE_ID
FROM MASTERTABLE
WHERE ID_NUMBER=11);
Using Inline View (If it is considered updateable by Oracle)
Note: If you face a non key preserved row error add an index to resolve the same to make it update-able
UPDATE
(SELECT
TESTTABLE.TEST_COLUMN AS OLD,
'Testvalue' AS NEW
FROM
TESTTABLE
INNER JOIN
MASTERTABLE
ON TESTTABLE.TESTTABLE_ID = MASTERTABLE.TESTTABLE_ID
WHERE ID_NUMBER=11) T
SET
T.OLD = T.NEW;
Using Merge
MERGE INTO
TESTTABLE
USING
(SELECT
T1.ROWID AS RID,
T2.TESTTABLE_ID
FROM
TESTTABLE T1
INNER JOIN
MASTERTABLE T2
ON TESTTABLE.TESTTABLE_ID = MASTERTABLE.TESTTABLE_ID
WHERE ID_NUMBER=11)
ON
( ROWID = RID )
WHEN MATCHED
THEN
UPDATE SET TEST_COLUMN= 'Testvalue';
The problem was as Tom H wrote a blocking problem. When I started working on the project today all of the solutions worked.
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 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
);