Hello Simon,
Does raise the further question of how psql behaves when we connect to
a pre-10 server, so we have SERVER_VERSION_NUM but yet it is not set.
How does this
\if SERVER_VERSION_NUM < x
The if does not have expressions (yet), it just handles TRUE/ON/1 and
FALSE/0/OFF.
Do we need some macro or suggested special handling?
If "SERVER_VERSION_NUM" is available in 10, then:
-- exit if version < 10 (\if is ignored and \q is executed)
\if false \echo "prior 10" \q \endif
-- then test version through a server side expression, will work
SELECT :SERVER_VERSION_NUM < 110000 AS prior_11 \gset
\if :prior_11
-- version 10
\else
-- version 11 or more
\endif
--
Fabien.
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