@@transcount in sql server

-
Returns the number of BEGIN TRANSACTION statements that have occurred on the current connection .
For ex :
PRINT @@TRANCOUNT
--  The BEGIN TRAN statement will increment the
--  transaction count by 1.
BEGIN TRAN
    PRINT @@TRANCOUNT
    BEGIN TRAN
        PRINT @@TRANCOUNT
--  The COMMIT statement will decrement the transaction count by 1.
    COMMIT
    PRINT @@TRANCOUNT
COMMIT
PRINT @@TRANCOUNT
--Results
0
1
2
1
0



Ex2 :- >

  Step 1:




create table a(m varchar(max), i int)


go


 


Step2 : 






declare @cnt int
--Explicit transaction
begin tran
set @cnt=@@trancount
insert into a select 'inside', @@trancount
insert into a select 'inside cnt', @cnt
commit tran

set @cnt=@@trancount

--Implicit transcation
insert into a select 'outside', @@trancount
insert into a select 'outside cnt', @cnt


 


 


Step 3 : 


 





select * from a


 


Output :

inside    2 
inside cnt             1


outside 2 
outside cnt         0



References :   http://blogs.msdn.com/b/jenss/archive/2010/07/10/usage-of-trancount-in-dml-statements.aspx 




http://technet.microsoft.com/en-us/library/ms187967


 




















































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