Is there a way in postgresql to have an auto-incrementing column reset back to zero at a specified time every day?
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Is there a way in postgresql to have an auto-incrementing column reset back to zero at a specified time every day?
It could be pretty trivial with a cronjob
Alternately, you could set your “serial” column DEFAULT to call a stored procedure, which would check for a day rollover, reset the sequence if appropriate, and then return the result of nextval().
But other than that, no, I wouldn’t expect that there’s a magic ALTER SEQUENCE my_seq RESET AT INERVAL ‘1 day’ or anything like that.
Edit: incorporated duckyfuzz’s comment.