I use this to import data from another SHEET1:
=LET(data,importrange("MY_ID", "SHEET!1:1000"),
FILTER(data,IFNA(XMATCH(INDEX(data,1),{"timestamp"}))))
The formula works great, but I wanted to know if it is possible only to import the first Column that matches the name "timestamp"?
Because in some cases, I have 4-5 columns with the name "timestamp"...but I only need the FIRST always.
You can use INDEX to select one column based on the first match of the headers
=LET(data,importrange("MY_ID", "SHEET!1:1000"),
INDEX(data,,XMATCH("timestamp",INDEX(data,1))))
Or, the same with CHOOSECOLS
=LET(data,importrange("MY_ID", "SHEET!1:1000"),
CHOOSECOLS(data,XMATCH("timestamp",INDEX(data,1))))