quickie: can auto_increment wrap?
I have a system that uses mysql for temporary storage of
data. The records are kept unique in the usual lazy man's
way of having an auto_increment ID field.
A large number of records come and go from this database.
At SOME point in the future, the integer value of auto_increment
will exceed that which can be carried by the largest unsigned
integer data type available.
Is there a way to modify the auto_increment "extra" on the
field to allow it to wrap around, keeping it from exceeding
the maximum encodable value and thereby keeping inserts
from failing on a non-unique primary key error?
Assuming record 1 (why not zero?) has already been deleted
when mysqld tries to write record MAXINT+1, would it not be
natural to re-use the sequence?
The only kludge I've found around this is to, at some point,
delete everything from the table.
Suggestions?
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dcampbel - duncan campbell
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