21 lines
783 B
SQL
21 lines
783 B
SQL
-- začátek aktuálního (+offset) 15min slotu v Europe/Prague jako timestamptz (UTC instants)
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create or replace function ems.fn_planning_slot_boundary_prague(p_offset_slots int default 0)
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returns timestamptz
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language sql
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stable
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as $fn$
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select (
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(date_trunc('day', loc.ts)
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+ make_interval(
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hours => extract(hour from loc.ts)::int,
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mins => (floor(extract(minute from loc.ts) / 15) * 15)::int
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)
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)::timestamp at time zone 'Europe/Prague'
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) + make_interval(mins => coalesce(p_offset_slots, 0) * 15)
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from (select now() at time zone 'Europe/Prague' as ts) loc;
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$fn$;
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comment on function ems.fn_planning_slot_boundary_prague(int) is
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'Začátek 15min slotu v časové zóně site provozu (Europe/Prague floor); offset v násobcích 15 min.';
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