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How to list gaps in sequence id

Beauty_and_dBestJan 22 2017 — edited Jan 24 2017

Hi ALL,

Oracle 11gR2

OL6

I have student_id column in my STUD table generated by student_seq.

I want to reuse sequence id gaps to save the number system.

How do I list the unused numbers or the gaps?

For example, my student_id has values:

1

3

4

6

12

How do I select 2,5,7,8,9,10,11?

Please help...

Kind regards,

jc
This post has been answered by Beauty_and_dBest on Jan 22 2017
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Locked on Feb 21 2017
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