There are two sheets, in which there is two colums :
– from A1 to A3 with dates (example : 01/01/2016),
– from B1 to B3 with titles (example : formation n°1),
In a second sheet, there are :
– in A1, the list of the titles (with a scrolling menu, related to the sheet 2 B1:B3),
– in A2, a cell where we indicate the free date,
How to put in the A3 cell the formula that allow to say : if the date entered in the cell in more ancient than a date related to this title in sheet 2 then FALSE, otherwise TRUE.
Example :
Sheet 2
A B
01/04/2016 Formation 1
01/05/2016 Formation 2
01/06/2016 Formation 3
Sheet 1
A1
Formation 2
A2
01/04/2016
A2
FALSE (because the date for this formation is more ancient than the referential > Formation 2 that starts from 01/05/2016
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