@@identity contains the last value inserted into an IDENTITY column in the current user session. @@identity is set each time an insert, select into, or bcp attempts to insert a row into a table. The value of @@identity is not affected by the failure of an insert, select into, or bcp statement or the rollback of the transaction that contained it. @@identity retains the last value inserted into an IDENTITY column, even if the statement that inserted it fails to commit.
If a statement inserts multiple rows, @@identity reflects the IDENTITY value for the last row inserted. If the affected table does not contain an IDENTITY column, @@identity is set to 0.
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