At 15:17 +0530 9/12/05, [EMAIL PROTECTED] wrote:
This is from the docs ..... "The auto-increment value of a deleted
record will only not be reused until the server is restarted, then
it will be reused. In other words, if you insert 10 rows into an
InnoDB table and then delete them the AUTO_INCREMENT value will stay
at 11 until the server is shutdown at which point it will revert to
1!!!""
Now if i have records 1 to 10 and i delete some records in between ,
say, 5, 7, 8. Now when i restart my server, will these values of 5,
7 and 8 be reused??
No. If there is a value present in the column with a value higher than the
unused values, those values won't be reused.
Does it mean that the autoincrement values of deleted records will
be reused only if ALL records are deleted and then server restarted??
All records with values higher than the deleted records.
From docs .... " Note that you may see gaps in the sequence of
values assigned to the AUTO_INCREMENT column if you roll back
transactions that have gotten numbers from the counter. "
Does InnoDB reuse these gap values at any time ???
If all records with values higher than the deleted records are deleted
and you restart.
--
Paul DuBois, MySQL Documentation Team
Madison, Wisconsin, USA
MySQL AB, www.mysql.com
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