[CX] Union operation not supported,no space between UNION and with in message"Operation UNIONwith set semantics is not supported."

Query issued:
select name from default_shadow union select email from default_shadow;

Result:
"msg": "Operation UNIONwith set semantics is not supported."

We can mark the label of this bug as documentation if UNION with set is not to be supported in DP but please add a space between UNION and with in above message