What happens when the main table contains BS1234 as well as BS12345 ?
As ugly as it might perform, you may need to join like this:
SELECT fld1, fld2, fld3
FROM VISITS AS V
LEFT JOIN REVISITS AS R
ON V.Reference = LEFT(R.Reference, CHARINDEX('R', R.Reference) - 1)
Steve (aka sgmunson) 🙂 🙂 🙂
Rent Servers for Income (picks and shovels strategy)