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Discuss content posted by Honza Mensdorff
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Triggers and Transactions
32 posts, Page 4 of 4
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Triggers and Transactions
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honza.mf
honza.mf
Posted Tuesday, October 05, 2010 8:31 AM
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Tom.Thomson (10/5/2010)
Nice question.
But is there something wrong with the documentation? The BoL page referenced states
@@TRANCOUNT is incremented by one when entering a trigger, even when in autocommit mode. (The system treats a trigger as an implied nested transaction.)
which suggests that the two rows logged for the insert of value 2 (which occurred in an explicit transaction) should have tc = 2 not tc = 1.
I don't know. You are right but experiments show this behaviour.
Many times I read BOL or some other documentation I feel like being in the helicopter.
See, understand, learn, try, use efficient
© Dr.Plch
Post #998402
L' Eomot Inversé
L' Eomot Inversé
Posted Tuesday, October 05, 2010 12:39 PM
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honza.mf (10/5/2010)
I don't know. You are right but experiments show this behaviour.
Many times I read BOL or some other documentation I feel like being in the helicopter.
BoL often makes me feel like that. And the experiment in this case shows another oddity: when in autocommit mode, a reference to @@tc in the statement bring auto-committed will be evaluated before the transaction is started (hence the 0 count in the first and fourth rows).
I've written quite a lot of things that look at @@tc for various reasons, but results like these make me very very careful about doing it!
Tom
Is minic a gheibheann béal oscailte dorn dúnta.
Is minig a cheapas beul fosgailte dòrn dùinte.
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