On 07/04/2018 03:53 PM, Melvin Davidson wrote:
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>
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> The problem is, AFAICS, none of the changes induced were really
> necessary or increased performance.
The folks that wanted transactional ALTER SEQUENCE might disagree:):
https://www.postgresql.org/docs/10/static/release-10.html
"Move sequences' metadata fields into a new pg_sequence system catalog
(Peter Eisentraut)
A sequence relation now stores only the fields that can be modified by
nextval(), that is last_value, log_cnt, and is_called. Other sequence
properties, such as the starting value and increment, are kept in a
corresponding row of the pg_sequence catalog. ALTER SEQUENCE updates are
now fully transactional, implying that the sequence is locked until
commit. The nextval() and setval() functions remain nontransactional.
...
"
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>
> *Melvin Davidson**
> Maj. Database & Exploration Specialist**
> Universe Exploration Command – UXC***
> Employment by invitation only!
--
Adrian Klaver
adrian.klaver@aklaver.com