I'm trying to get a series of datetimes using func.datetime. The format of
input is func.datetime(basetime, '+ NNN seconds'), which works nicely if
the shift applied is constant. However I need to add 10, 20, 30 seconds,
etc to this base time. So I want something like func.datetime(basetime,
concat('+', seconds.c.n, ' seconds')), but concat doesn't work for sqlite,
which concatenates using the '||' operator. Is there working method to
concat in sqlite?
Failing that, is there another way to get at what I want with datetime
arithmetics?
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