On Wed, Nov 11, 2020 at 7:54 PM Eugen Konkov <kes-kes@yandex.ru> wrote:
Hello David,
I have a table with services, each service have a period. After which service is auto renewal
Services also could be one-time. At this case its interval is '00:00:00'
In which case the concept of interval is undefined - there is no meaningful "second date" here, just the one expiration date - yet you are choosing to keep it in order to introduce an artificial similarity between one-time service and auto-renewal service. This use case isn't convincing for me. Writing the one-time service query without generate_series leaves out extraneous stuff that isn't important, which I would recommend even if generate_series were to work as described.
If you are going to introduce code-specific stuff to make this work just write: SELECT * FROM generate_series( '2020-11-09', '2020-11-09', INTERVAL '1000 years' ); It is just as much a construction of code as the other.
