Concurrent Transaction in SQL server

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Hi there,

How to do concurrent transaction in two tables using SQL???

I've two tables.Say tab1 and tab2. I wanna insert some data to both the tables. But any one of the table alone never gets inserted. I wanna ensure that, either both tables get inserted or none. How to apply Transaction to this task???

Thanks in advance

Posted 13-Oct-11 20:30pm

aswathy.s.88

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RaviRanjanKr · Answer 1 · 2011-10-13T20:55:00

hey aswathy.s.88 I tried to gather some information for you to let know about Commit and Rollback condition.

BEGIN TRANSACTION starts a local transaction for the connection issuing the statement. Depending on the current transaction isolation level settings, many resources acquired to support the Transact-SQL statements issued by the connection are locked by the transaction until it is completed with either a COMMIT TRANSACTION or ROLLBACK TRANSACTION statement
COMMIT TRANSACTION only at a point when all data referenced by the transaction is logically correct
and
ROLLBACK TRANSACTION erases all data modifications made from the start of the transaction or to a savepoint. It also frees resources held by the transaction.
Reference Link:-
COMMIT TRANSACTION (Transact-SQL)[^]
ROLLBACK TRANSACTION (Transact-SQL)[^]

Mehdi Gholam · Answer 2 · 2011-10-13T20:40:00

Solution 1

Do the following

SQL

begin transaction
insert into tab1 (col1,col2) values (1,1)
insert into tab2 (col11,col22) values (2,2)

To commit and save to both tables:

SQL

commit transaction

To rollback and nothing is saved in both tables:

SQL

rollback transaction

Posted 13-Oct-11 20:40pm

Mehdi Gholam

Comments

aswathy.s.88 14-Oct-11 2:46am

What should be the condition to give to execute Commit and Rollback?

Mehdi Gholam 14-Oct-11 2:53am

That depends on you and your business requirements.

RaviRanjanKr 14-Oct-11 2:55am

Take a look at my answer to know about Commit and Rollback condition.

RaviRanjanKr 14-Oct-11 2:48am

My 5+

Mehdi Gholam 14-Oct-11 2:53am

Thanks