问题
I have a table with an identity column that have incremented by 1 for all its records then suddenly last week it started incrementing in a weird way.
For example:
Identity - Date
31891 2010-02-27 09:47:41
39258 2010-02-27 13:13:03
41994 2010-02-27 13:43:56
45119 2010-02-27 14:44:43
45120 2010-02-27 14:51:33
45121 2010-02-27 15:01:12
63943 2010-02-27 19:38:24
63944 2010-02-27 20:14:11
73344 2010-02-27 22:06:35
78298 2010-02-27 22:54:43
124007 2010-02-28 07:02:51
130482 2010-02-28 07:35:34
130483 2010-02-28 08:05:02
144470 2010-02-28 10:11:57
164253 2010-02-28 11:30:00
254921 2010-02-28 16:59:51
254922 2010-02-28 17:06:28
If you look at the time you can see that the longer time it is between inserts the highter the increment is. I am totally lost to why this is happening. I do not perform any delete queries on the table so it can't be deleted rows.
回答1:
An identity sequence is incremented any time an insert is attempted -- this includes a failed or rolled back INSERT. Do you have any processes generating insert errors or rolling back?
回答2:
Each failed insert results in the identity value being incremented. Is it possible something is trying to insert new rows and failing?
来源：https://stackoverflow.com/questions/2387285/sql-server-2005-identity-incrementing-by-itself