I'm probably overthinking this so here goes.
I have two tables. The first one I want to populate the CorporationId based off it's TokenId value.
dbo.UsersAccountLink:
And the table that I want to get the value from:
Company.Token:
Here is what I have but it's not set right so it will not run. I'm not sure how to do this:
INSERT INTO dbo.UsersAccountLink.CorporationId
Select CorporationId
From Company.Token
Where Company.Token.TokenId = dbo.UsersAccountLink.TokenId
I want to populate dbo.UsersAccountLink.CorporationId with the value in Company.Token.CorporationId based on the TokenId.
Help?!
Looks like you want to update versus insert...
update dbo.UsersAccountLink
set CorporationID =
(Select CorporationId
From Company.Token
Where Company.Token.TokenId = dbo.UsersAccountLink.TokenId)
Related
I have a table that I need to add the same values to a whole bunch of items
(in a nut shell if the item doesn't have a UNIT of "CTN" I want to add the same values i have listed to them all)
I thought the following would work but it doesn't :(
Any idea what i am doing wrong ?
INSERT INTO ICUNIT
(UNIT,AUDTDATE,AUDTTIME,AUDTUSER,AUDTORG,CONVERSION)
VALUES ('CTN','20220509','22513927','ADMIN','AU','1')
WHERE ITEMNO In '0','etc','etc','etc'
If I understand correctly you might want to use INSERT INTO ... SELECT from original table with your condition.
INSERT INTO ICUNIT (UNIT,AUDTDATE,AUDTTIME,AUDTUSER,AUDTORG,CONVERSION)
SELECT 'CTN','20220509','22513927','ADMIN','AU','1'
FROM ICUNIT
WHERE ITEMNO In ('0','etc','etc','etc')
The query you needs starts by selecting the filtered items. So it seems something like below is your starting point
select <?> from dbo.ICUNIT as icu where icu.UNIT <> 'CTN' order by ...;
Notice the use of schema name, terminators, and table aliases - all best practices. I will guess that a given "item" can have multiple rows in this table so long as ICUNIT is unique within ITEMNO. Correct? If so, the above query won't work. So let's try slightly more complicated filtering.
select distinct icu.ITEMNO
from dbo.ICUNIT as icu
where not exists (select * from dbo.ICUNIT as ctns
where ctns.ITEMNO = icu.ITEMNO -- correlating the subquery
and ctns.UNIT = 'CTN')
order by ...;
There are other ways to do that above but that is one common way. That query will produce a resultset of all ITEMNO values in your table that do not already have a row where UNIT is "CTN". If you need to filter that for specific ITEMNO values you simply adjust the WHERE clause. If that works correctly, you can use that with your insert statement to then insert the desired rows.
insert into dbo.ICUNIT (...)
select distinct icu.ITEMNO, 'CTN', '20220509', '22513927', 'ADMIN', 'AU', '1'
from ...
;
I'm copying the contents of a table into another identical table. But there are already data in the destination table.
Some data in the destination table has the same code as the source table.
Is it possible to skip the duplicates and not to block the insertion for the rest of the data without it failing?
insert into [DB2].[dbo].[MAN] values([MAN],[DES])
SELECT [MAN]
,[DES]
FROM [DB1].[dbo].[MAN]
You can use NOT EXISTS :
INSERT INTO [DB2].[dbo].[MAN] ([MAN], [DES])
SELECT M.[MAN], M.[DES]
FROM [DB1].[dbo].[MAN] AS M
WHERE NOT EXISTS (SELECT 1 FROM [DB2].[dbo].[MAN] M1 WHERE M1.COL = M.COL);
You need to change the M1.COL = M.COL with your actual column name from which you can identify the duplicate values.
If you have your unique col then you can go like this.
insert into [DB2].[dbo].[MAN] values([MAN],[DES])
SELECT [MAN]
,[DES]
FROM [DB1].[dbo].[MAN] WHERE uniqueCol NOT IN (SELECT uniqueCol FROM [DB2].[dbo].[MAN])
Otherwise append few columns to get unique one and compare like that.
I’m trying to create a trigger to change the value of a column in table B if it finds the information in a column in table A.
An example of my database is below:
[TableA],
itemID
[TableB],
itemID
itemInStock
Once a user creates an entry in Table A declaring an itemID, the trigger needs to change the TableB.itemInStock column to ‘Yes’
I’m still learning SQL so excuse me if I’ve missed something, let me know if you need any more info.
I understand there are better ways of doing this but I've been told I need to do this using a trigger.
I've attempted a few different things, but as it stands nothing is working, below is the current solution I have however this updates all itemInStock rows to 'Yes', where as I only want the ones to update where the TableB.itemID matches the itemID entered in TableA.
ALTER TRIGGER [itemAvailability] ON [dbo].[TableA] FOR
INSERT
AS
BEGIN
UPDATE [dbo].[TableB] set itemInStock = 'Yes' WHERE
TableB.itemID = itemID
END
Two problems -
you're not looking at the Inserted pseudo table which contains the
newly inserted rows
you're assuming the trigger is called once per row - this is not the
case, the trigger is called once per statement and the Inserted
pseudo table will contain multiple rows - and you need to deal with
that
So, your code should look like this -
ALTER TRIGGER [itemAvailability] ON [dbo].[TableA]
FOR INSERT
AS
UPDATE TB
SET itemInStock = 'Yes'
FROM [dbo].[TableB] TB JOIN inserted I
on TB.itemID = I.itemID
This is probably a very simple question for you SQL folks out there.
I have a temp table (TMP_VALIDATION_DATA) in which I've stored the old and new values of some fields I wish to update in a production table (PROVIDER_SERVICE), plus the uuids of the PROVIDER_SERVICE records that need to be updated.
What I want to accomplish is this, in pseudo-code:
For every prov_svc_uuid uuid in TMP_VALIDATION_DATA table
Set PROVIDER_SERVICE_RATE.END_DATE = NewPvSvcEndDate
Where [uuid in temp table] = [uuid in PROVIDER_SERVICE table]
end for
Is this Update statement going to accomplish what I need?
update PROVIDER_SERVICE
set END_DATE = (
select NewPvSvcEndDate
from TMP_VALIDATION_DATA T
where T.PROVIDER_SERVICE_UUID = PROVIDER_SERVICE.PROVIDER_SERVICE_UUID
)
If my UPDATE is incorrect, will you please provide the correction? Thanks.
Your query will update all records and you might get an error if you have more than one record in your subquery. I would also change your syntax to a JOIN similar to below.
update P
set END_DATE = T.NewPvSvcEndDate
FROM PROVIDER_SERVICE P
JOIN TMP_VALIDATION_DATA T
ON P.PROVIDER_SERVICE_UUID = T.PROVIDER_SERVICE_UUID
If you don't want to UPDATE all records, then add a WHERE clause.
My suggestion is if you don't know how many records would be included in the UPDATE, write your query as a SELECT first, then change it to an UPDATE. So for this one:
SELECT P.END_DATE, T.NewPvSvcEndDate
FROM PROVIDER_SERVICE P
JOIN TMP_VALIDATION_DATA T
ON P.PROVIDER_SERVICE_UUID = T.PROVIDER_SERVICE_UUID
This will either update all records, or error out (not sure what happens when you try to update a column with multiple values like that).
OK. I'm doing an update on a single row in a table.
All fields will be overwritten with new data except for the primary key.
However, not all values will change b/c of the update.
For example, if my table is as follows:
TABLE (id int ident, foo varchar(50), bar varchar(50))
The initial value is:
id foo bar
-----------------
1 hi there
I then execute UPDATE tbl SET foo = 'hi', bar = 'something else' WHERE id = 1
What I want to know is what column has had its value changed and what was its original value and what is its new value.
In the above example, I would want to see that the column "bar" was changed from "there" to "something else".
Possible without doing a column by column comparison? Is there some elegant SQL statement like EXCEPT that will be more fine-grained than just the row?
Thanks.
There is no special statement you can run that will tell you exactly which columns changed, but nevertheless the query is not difficult to write:
DECLARE #Updates TABLE
(
OldFoo varchar(50),
NewFoo varchar(50),
OldBar varchar(50),
NewBar varchar(50)
)
UPDATE FooBars
SET <some_columns> = <some_values>
OUTPUT deleted.foo, inserted.foo, deleted.bar, inserted.bar INTO #Updates
WHERE <some_conditions>
SELECT *
FROM #Updates
WHERE OldFoo != NewFoo
OR OldBar != NewBar
If you're trying to actually do something as a result of these changes, then best to write a trigger:
CREATE TRIGGER tr_FooBars_Update
ON FooBars
FOR UPDATE AS
BEGIN
IF UPDATE(foo) OR UPDATE(bar)
INSERT FooBarChanges (OldFoo, NewFoo, OldBar, NewBar)
SELECT d.foo, i.foo, d.bar, i.bar
FROM inserted i
INNER JOIN deleted d
ON i.id = d.id
WHERE d.foo <> i.foo
OR d.bar <> i.bar
END
(Of course you'd probably want to do more than this in a trigger, but there's an example of a very simplistic action)
You can use COLUMNS_UPDATED instead of UPDATE but I find it to be pain, and it still won't tell you which columns actually changed, just which columns were included in the UPDATE statement. So for example you can write UPDATE MyTable SET Col1 = Col1 and it will still tell you that Col1 was updated even though not one single value actually changed. When writing a trigger you need to actually test the individual before-and-after values in order to ensure you're getting real changes (if that's what you want).
P.S. You can also UNPIVOT as Rob says, but you'll still need to explicitly specify the columns in the UNPIVOT clause, it's not magic.
Try unpivotting both inserted and deleted, and then you could join, looking for where the value has changed.
You could detect this in a Trigger, or utilise CDC in SQL Server 2008.
If you create a trigger FOR AFTER UPDATE then the inserted table will contain the rows with the new values, and the deleted table will contain the corresponding rows with the old values.
Alternative option to track data changes is to write data to another (possible temporary) table and then analyse difference with using XML. Changed data is being write to audit table together with column names. Only one thing is you need to know table fields to prepare temporary table.
You can find this solution here:
part 1
part 2
If you are using SQL Server 2008, you should probably take a look at at the new Change Data Capture feature. This will do what you want.
OUTPUT deleted.bar AS [OLD VALUE], inserted.bar AS [NEW VALUE]
#Calvin I was just basing on the UPDATE example. I am not saying this is the full solution. I was giving a hint that you could do this somewhere in your code ;-)
Since I already got a -1 from the above answer, let me pitch this in:
If you don't really know which Column was updated, I'd say create a trigger and use COLUMNS_UPDATED() function in the body of that trigger (See this)
I have created in my blog a Bitmask Reference for use with this COLUMNS_UPDATED(). It will make your life easier if you decide to follow this path (Trigger + Columns_Updated())
If you're not familiar with Trigger, here's my example of basic Trigger http://dbalink.wordpress.com/2008/06/20/how-to-sql-server-trigger-101/