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public function ExisteRecouvrementPeriode(prmClefOutil as long, prmDateDebut as date, prmDateFin as date) as boolean
dim result as boolean
dim compteIntersection
dim critere as string
'On va regarder pour l'outil courant
critere = "[ClefOutil]=" & prmClefOutil
critere = critere & " and ("
'La periode commence-t-elle dans une période existante
critere = critere & "#" & format$(prmDateDebut,"yyyy/mm/dd") & "# between [date_debut] and [date_fin]"
critere=critere & " or "
'La periode finit-elle dans une période existante
critere = critere & "#" & format$(prmDateFin,"yyyy/mm/dd") & "# between [date_debut] and [date_fin]"
critere=critere & " or "
'La periode englobe-t-elle dans une période existante ?
critere = critere & "[date_debut] between #" & format$(prmDateDebut,"yyyy/mm/dd") & " and #" & format$(prmDateFin,"yyyy/mm/dd") & "#"
critere=critere & " or "
critere = critere & "[date_fin] between #" & format$(prmDateDebut,"yyyy/mm/dd") & " and #" & format$(prmDateFin,"yyyy/mm/dd") & "#"
'Ferme la parenthèse du and
critere = critere & ")"
compteIntersection=DCount("[TaClefReservation]", "Reservation", critere)
if compteIntersection<>0 then
result=true
else
result=false
end if
ExisteRecouvrementPeriode=result
end function |
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