I have two columns in a table , say "colA", "colB" and "colC" need to be computed.
Case 1: Here, colC is a combination of colA and colB with delimiter as space.
For example , if colA = 'abc' and colB = 'xyz' then colC = 'abc xyz'.
Case 2: Here , if either of the colums (colA , colB) is null then colC should contain the non-null value among colA and colB.
For example , if colA = null and colB = 'xyz' then colC = 'xyz'. if colA = 'abc' and colB = null then colC = 'abc'.
How can I achieve this in a select statement using
CASE or some other best approach?