util.dates.sql

#if 0
-- Copyright (c) 2023 Guillaume Outters
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-- N.B.: ce fichier étant destiné à être inclus, l'ensemble de ses commentaires est encadré de #if 0 pour éviter de polluer l'incluant de nos notes.

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-- Pseudo-jour

-- Le pseudo-jour est le jour dans le mois, mais en comptant en négatif à partir du 20.
-- Sur un mois de 31 jours, le 31 est compté comme -1 du mois suivant (et non 0), le 30 comme -2, etc.

#endif
#if defined(:pilote) && :pilote == 'oracle'
#define DERNIERDUMOIS(j) ((trunc(j, 'MM') + interval '1' month) - interval '1' day)
#else
#define DERNIERDUMOIS(j) date_trunc('month', j) + interval '1 month - 1 day'
#endif
#define PSEUDOJOUR(j) \
	extract(day from j) - case when extract(day from j) >= 20 then extract(day from DERNIERDUMOIS(j)) + 1 else 0 end