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Update multiple tables with view SQL Server 2008

Posted on 2009-06-30
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Last Modified: 2012-05-07
I have a view which is connected to at least two tables. I need this view for data entry but whenever I try to enter a new record I get an error. Is there anyway to accomplish this?
Thanks.
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Question by:Atouray
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Expert Comment

by:brejk
ID: 24748394
Why don't you create a stored procedure to perform inserts to multiple tables in a transaction?
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Kevin Cross earned 500 total points
ID: 24748403
An approach I know would be to add an INSTEAD OF UPDATE trigger on your view and then you can write individual update statements for each of the tables identifying which values should be updated to which table.

You can also join in the DELETED table to see if there was actual a change to a value to save on updating a column that didn't change, but hopefully you get the basic point.
-- example
CREATE TRIGGER {trigger name}
ON {schema name}.{view name}
INSTEAD OF UPDATE
AS
-- update first table
UPDATE t
SET t.column_name = i.column_name
FROM table_1_name t 
INNER JOIN inserted i ON t.id_column = i.id_column;
 
-- update second table
UPDATE t
SET t.other_column_name = i.other_column_name
FROM table_2_name t 
INNER JOIN inserted i ON t.id_column = i.id_column;

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Expert Comment

by:Kevin Cross
ID: 24748462
I forgot, you can also use the Update() function to test, like this:

IF UPDATE(column_name)
BEGIN
-- update table with column_name
UPDATE t
SET t.column_name = i.column_name
FROM table_1_name t
INNER JOIN inserted i ON t.id_column = i.id_column;
END
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Expert Comment

by:brejk
ID: 24748538
And the trigger shouls start with:

IF @@ROWCOUNT = 0
RETURN
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Expert Comment

by:brejk
ID: 24748562
Oh, please ignore my previous post :-) In case of triggers like mentioned here my suggestion is not very useful.
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