Hi,
I have a view that looks something like this -
CREATE VIEW myview AS SELECT
myudf(col1) as col1, col2, col3
FROM mytable
The view has an 'INSTEAD OF' trigger on it to do the correct thing on
insert. When I run the bcp, it runs successfully, but the value
inserted into col1 is always NULL. I modified my trigger to get a
better idea of what was happening, and when I look at the values of
INSERTED.col1, they are all null. It appears that bcp is setting the
column value to null, presumable because the view definintion for this
column is a derived column.
Does any one know a way around this?
Thanks! 5 3915
On 10 Jan 2006 11:28:32 -0800, bs******@gmail. com wrote: Hi,
I have a view that looks something like this -
CREATE VIEW myview AS SELECT myudf(col1) as col1, col2, col3 FROM mytable
The view has an 'INSTEAD OF' trigger on it to do the correct thing on insert. When I run the bcp, it runs successfully, but the value inserted into col1 is always NULL. I modified my trigger to get a better idea of what was happening, and when I look at the values of INSERTED.col 1, they are all null. It appears that bcp is setting the column value to null, presumable because the view definintion for this column is a derived column.
Does any one know a way around this?
Thanks!
Hi bsandell,
By default, triggers are not fired for bulk copy statements.
To override this default, add the option
-h "FIRE_TRIGG ERS"
--
Hugo Kornelis, SQL Server MVP
Hi Hugo,
Thanks, I am using the -h "FIRE TRIGGERS". The trigger is definitely
being executed. I have added the following line to my trigger code -
SELECT inserted.* into pubs..dummy from inserted
My input file looks like this -
aaa,aaa,aaa
bbb,bbb,bbb
ccc,ccc,ccc
but when the code above runs in my trigger, the output is -
NULL,aaa,aaa
NULL,bbb,bbb
NULL,ccc,ccc
so it looks like bcp has somehow determined that the first column in my
view does not have a 1-to-1 mapping with a column on the database
(because it's based on a udf) and set it to null? I'd like to find a
way to work around this if possible, without changing the view
definition or the underlying table.
Any ideas?
Thanks,
Bruce
(bs******@gmail .com) writes: Thanks, I am using the -h "FIRE TRIGGERS". The trigger is definitely being executed. I have added the following line to my trigger code -
SELECT inserted.* into pubs..dummy from inserted
My input file looks like this - aaa,aaa,aaa bbb,bbb,bbb ccc,ccc,ccc
but when the code above runs in my trigger, the output is - NULL,aaa,aaa NULL,bbb,bbb NULL,ccc,ccc
so it looks like bcp has somehow determined that the first column in my view does not have a 1-to-1 mapping with a column on the database (because it's based on a udf) and set it to null? I'd like to find a way to work around this if possible, without changing the view definition or the underlying table.
Smells bug to me. To wit, it works with BULK INSERT, which uses OLE DB
in difference of BCP which uses ODBC. The behaviour is the same in
SQL 2000 and SQL 2005, so I've field a bug for it, http://lab.msdn.microsoft.com/Produc...ckId=FDBK43711
You can vote for it, if you like.
The repro below is also in the bug report:
USE tempdb
go
CREATE TABLE sandell (col1 int NULL,
col2 int NULL,
col3 int NULL)
go
CREATE FUNCTION myudf(@c int) RETURNS int AS
BEGIN
RETURN (SELECT 80 - @c)
END
go
CREATE VIEW sandell_vy AS
SELECT col1 = dbo.myudf(col1) , col2, col3
FROM sandell
go
CREATE TRIGGER sandell_tri ON sandell_vy INSTEAD OF INSERT AS
INSERT sandell(col1, col2, col3)
SELECT 80 - col1, col2 + 20, col3 + 20 FROM inserted
go
INSERT sandell_vy (col1, col2, col3)
SELECT 12, 98, 23
go
SELECT * FROM sandell_vy
go
EXEC master..xp_cmds hell 'ECHO 9, 2, 98 > C:\TEMP\bulk.cs v', 'no_output'
EXEC master..xp_cmds hell 'ECHO 76, 23, 87 >> C:\TEMP\bulk.cs v', 'no_output'
go
BULK INSERT sandell_vy FROM 'C:\temp\bulk.c sv'
WITH (FIELDTERMINATO R = ',',
DATAFILETYPE = 'char',
FIRE_TRIGGERS)
go
DECLARE @bcp nvarchar(4000)
SELECT @bcp = 'bcp tempdb..sandell _vy in C:\temp\bulk.cs v -T -c -t, -h "FIRE_TRIGG ERS" -S ' + @@servername
EXEC master..xp_cmds hell @bcp
go
SELECT * FROM sandell_vy
go
DROP VIEW sandell_vy
DROP FUNCTION myudf
DROP TABLE sandell
EXEC master..xp_cmds hell 'DEL C:\temp\bulk.cs v', 'no_output'
--
Erland Sommarskog, SQL Server MVP, es****@sommarsk og.se
Books Online for SQL Server 2005 at http://www.microsoft.com/technet/pro...ads/books.mspx
Books Online for SQL Server 2000 at http://www.microsoft.com/sql/prodinf...ons/books.mspx
Hi Erland,
As always, I really appreciate your help. Any guesses on the liklihood
that this would get fixed? I didn't think there was much going on with
bcp support these days. Thanks again for you time and effort.
Bruce
(bs******@gmail .com) writes: As always, I really appreciate your help. Any guesses on the liklihood that this would get fixed? I didn't think there was much going on with bcp support these days. Thanks again for you time and effort.
I would guess that it is more likely that it will be fixed in SQL 2005 than
in SQL 2000. Whether the fix will come in SP1 for SQL 2005, I don't want to
speculate in.
If this is critical for you, and you need a hotfix, you will have to open
a case with Microsoft, and try to convince them.
--
Erland Sommarskog, SQL Server MVP, es****@sommarsk og.se
Books Online for SQL Server 2005 at http://www.microsoft.com/technet/pro...ads/books.mspx
Books Online for SQL Server 2000 at http://www.microsoft.com/sql/prodinf...ons/books.mspx This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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