Question

can some one please explain how would I add a prefix to column “Name” in my scenario.

I would like to create UNION between two identical tables.
Both contain a field “Name”. In the column name I want to add a prefix “TABLE-A-” or “TABLE-B-“.

I know i can do this by N'PREFIX' + Name in the select, but the problem is that some records already have the prefix and some dont. So by using this would create a double prefix for those records…

Any idea?

Answer 1

You can use a CASE expression to conditionally add the prefix:

CASE WHEN Name like 'A1-%' THEN Name ELSE N'A1-' + Name END