In DML triggers, the inserted and deleted tables are primarily used to perform the following: If trigger actions depend on the number of rows a data modification effects, use tests (such as an examination of @@ROWCOUNT) for multirow data modifications (an INSERT, DELETE, or UPDATE based on a SELECT statement), and take appropriate actions.
SQL Server 2017 does not allow for text, ntext, or image column references in the inserted and deleted tables for AFTER triggers.
While that is a true statement, it ignores the fact that "their update" that is being honored is not, in any way, required to be the particular update you are wanting.
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MHMOT='MAG' then 1 ELSE 0 end, '0' from INSERTED INS WHERE ins.mhan8 not in(select mdan8 from crpdta.f55MRKT11) END TRIGGER #2: CREATE TRIGGER trg Upd_Summary ON [CRPDTA].[F55MRKT119] FOR Update AS BEGIN UPDATE CRPDTA. F55MRKT11 on(ins.mhan8=mdan8) END For instance if I do the following insert: INSERT INTO CRPDTA.
MHMOT'MAG' then 0 MDMAG end from INSERTED INS JOIN CRPDTA.
But this is recursive and I don't want that, causes deadlocks and other weirdness. I see that INSTEAD OF triggers are non-recursive, but if I do that do I have to check every other column in the Inserted to see if it got updated or will SQL Server handle that for me? @ypercubeᵀᴹ not a bad idea, but it won't work if the user expressly tries to update [Last Updated] along with the other columns will it? When the user updates the column manually in takes their update, and doesn't cause recursion when they don't. I've also seen this done using the SET MAXRECURSION command but since this is a database level setting, I usually prefer not to mess with it too much on a single operation.
As @ypercubeᵀᴹ pointed out in the comments, How do I add a “last updated” column in a SQL Server 2008 R2 table? Checking to see if the column has been updated just skips the logic and works the way I expect it to. Last Updated = GETDATE() 90 FROM Contact ct WHERE ...
DML trigger statements use two special tables: the deleted table and the inserted tables.
SQL Server automatically creates and manages these tables.
WHat I have tried so far is setting the trigger order for the update to run first and vice-versa, but still no luck. The insert part works fine in that it iserts in both tables with thecorrect values.
However it seems as if the Update protion is failingfor some reason.
SET NOCOUNT ON; -- Insert statements for trigger here declare @value int select @value=column B from inserted update triggertest Table set column [email protected] END GO If Column B gets updated then (1) Column A should be, also, updated or (2) Column A should be updated only if the old and the new values of Column B are different?
What happens if are inserted values in both columns (Column A and Columb B) ?
Below code handles INSERT only , please help me how to handle both Insertion and Updation of table ie when column B value gets inserted or updated.