How to call a scalar function in a stored procedure

Question

I am wacking my head over the problem with this code.

DECLARE @root hierarchyid
DECLARE @lastchild hierarchyid
SELECT @root = NodeHierarchyID FROM NodeHierar         


        

Answer 1

Use

set @lastchild = dbo.getlastchild(@root)

From CREATE FUNCTION

Scalar-valued functions may be invoked where scalar expressions are used, including computed columns and CHECK constraint definitions. When invoking scalar-valued functions, at minimum use the two-part name of the function.