How to verify if two range dates clash

[lucaslopesp]

I have a database where I can find the following informations: Resource, project, start date and end date. I would like to create a function that is able to check if the resource's projects dates clash. The outcome would be like the Status column bellow:

The dates follow the formula DD/MM/YYYY

If it's not clear, let me know

Thank you !

[vicky_]

We can break down the problem into 2 steps - find the start date of the previous and next time a resource is used, and then check if that date lies between the start and end dates of the current entry. 

Status = 

var prevTime = CALCULATE(MAX(Table[Start]),

    FILTER('Table', 'Table'[Resource] = EARLIER('Table'[Resource]) &&

        'Table'[Start] < EARLIER('Packing Scan'[Start])

    )

)

var nextTime = CALCULATE(MIN(Table[Start]),

    FILTER('Table', 'Table'[Resource] = EARLIER('Table'[Resource]) &&

        'Table'[Start] > EARLIER('Packing Scan'[Start])

    )

)

return IF(prevTime > [Start] || nextTime < [End], "Check", "OK")

You might need to fiddle with the formula (e.g. null checks) but it should help get you started.