Coalesce( <Expression,...> ) --> <Expression>
CoalesceEmpty( <Expression,...> ) --> <Expression>
DbSetNullValue([<lNullAllowed>]) -> lNullAllowed
Coalesce( <Expression,...> ) --> <Expression>
CoalesceEmpty( <Expression,...> ) --> <Expression>
DbSetNullValue([<lNullAllowed>]) -> lNullAllowed