Compare two columns and filters

[mecasteel]

I would like to use DAX to compare [SiteID] of the same [AsOfDate] and [CustomerPartNo] and add the [LastUsedDate] to the opposite [SiteID].  After creating the two new columns and adding [LastUsedDate] to each, I’m at a lost on how to proceed. I hope someone would know the best way to do this.  Below is sample output.

AsOfDate	SiteID	CustomerPartNo	LastUsedDate	MC LastDate Used	SC LastDate Used
8/2/21	SC	00309SR37010	7/27/21	7/26/21	7/27/21
8/2/21	MC	00309SR37010	7/26/21	7/26/21	7/27/21
8/2/21	SC	95060XC30009	7/22/21	7/21/21	7/22/21
8/2/21	MC	95060XC30009	7/21/21	7/21/21	7/22/21
9/6/21	SC	95060XC30004	BLANK	8/16/21	BLANK
9/6/21	MC	95060XC30004	8/16/21	8/16/21	BLANK

[smpa01]

@mecasteel  Can you please attach your pbix here through 1drive/gdrive?

[mecasteel]

can't right now, traveling.

[smpa01 · Accepted solution]

@mecasteel  please try this

[mecasteel]

your PBIX works great, but when i apply it to the full table - I get error 'EARLIER/EARLIEST  refers to an earlier row context which doesn't exist.'