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Implicit Transactions

Posted on 2010-08-14
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Last Modified: 2012-05-10
Hi experts, what is the appropriate setting to work with implicit transactions?
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Question by:enrique_aeo
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Expert Comment

by:man2002ua
ID: 33435960
What do you mean by "appropriate settings"?
Just call "SET IMPLICIT_TRANSACTIONS ON"
and don't forget to commit your work. This mode is similar to Oracle default behaviour.
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by:enrique_aeo
ID: 33435996
sorry, wrong question. scenarios in which I use
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man2002ua earned 250 total points
ID: 33436048
Understood, this mode is mostly used for Oracle developers, who switching to MSSQL.
In this mode any DDL, DML will start one transaction (untill next COMMIT). The default setting for MSSQL server - each DDL/DML use single transaction.
Exmaple:
-- default mode
delete from tableA;
go
delete from tableB;
go
-- all changes already in DB.
Here you dont need to commit, MSSQL did it for you.
but for:
set implicit_transaction on
go
delete from tableA;
go
delete from tableB;
go
-- at this point you can call rollback and rollback changed
-- or commit to save cahnges
commit
go
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