Trigger updating same table sql server 100 free no sign up sex chat
X INTO @T VALUES(1),(2),(3) /*Both have 3 rows*/ SELECT * FROM #T SELECT * FROM @T ROLLBACK /*Only table variable now has rows*/ SELECT * FROM #T SELECT * FROM @T DROP TABLE #T transaction log.
A common misconception is that this is not the case for table variables so a script demonstrating this is below, it declares a table variable, adds a couple of rows then updates them and deletes them.
There are restrictions on when this caching can occur however that are possible to violate for function does not work and the internal name is entirely system generated with no relationship to the variable name.
Alter both of the triggers as follows: 1 RETURN UPDATE dbo.tbl_Trigger Test SET Updated = GETDATE() FROM dbo.tbl_Trigger Test t INNER JOIN inserted i ON t.pk_Trigger Test = i.pk_Trigger Test END GO ALTER TRIGGER dbo.tr_Trigger Test_Sample ON dbo.tbl_Trigger Test AFTER UPDATE AS BEGIN IF TRIGGER_NESTLEVEL() If you run the above test script again, you will see that the error is now resolved.The deleted table contains the rows that were updated with their values before the update; the inserted table contains the rows that were updated with their new values.To test the trigger, we will run the following script to insert a row into our sample table then perform an update: CREATE TRIGGER dbo.tr_Trigger Test_Sample ON dbo.tbl_Trigger Test AFTER UPDATE AS UPDATE dbo.tbl_Trigger Test SET Trigger Sample = 'updated ' CAST(GETDATE() AS NVARCHAR(20)) FROM dbo.tbl_Trigger Test t INNER JOIN inserted i ON t.pk_Trigger Test = i.pk_Trigger Test Notice that both triggers are updating the table that causes the triggers to fire.No column statistics Having a more accurate table cardinality doesn't mean the estimated row count will be any more accurate however (unless doing an operation on all rows in the table).SQL Server does not maintain column statistics for table variables at all so will fall back on guesses based upon the comparison predicate (e.g.
However the results shown in the previous section do show an accurate DECLARE @T TABLE(I INT); INSERT INTO @T VALUES(1),(2),(3),(4),(5) CREATE TABLE #T(I INT) /*Reference to #T means this statement is subject to deferred compile*/ SELECT * FROM @T WHERE NOT EXISTS(SELECT * FROM #T) DROP TABLE #T Plan shows accurate estimated row count following deferred compile.