How to find least non-null column in one particular row in SQL?

Question

I am trying to find the lowest number in two columns of a row in the same table, with the caveat that one of the columns may be null in a particular row. If one of the colum

Answer 1

SELECT MIN(LEAST(COALESCE(COL1, COL2), COALESCE(COL2,CO1))) WHERE COL1 IS NOT NULL AND COL2 IS NOT NULL;