In this test, a tall, thin tube holds a sample of your blood. The speed at which the red blood cells fall to the bottom of the tube is measured. Inflammation can cause abnormal proteins to appear in your blood. These proteins cause your red blood cells to clump together.
From Wikipedia, the free encyclopedia. A user-defined function (UDF) is a function provided by the user of a program or environment, in a context where the usual assumption is that functions are built into the program or environment. 1 BASIC language.
1 User Defined Functions: Allow you to define your own Transact-SQL functions using the CREATE FUNCTION statement. 2  User Defined Functions use zero or more input parameters, and return a single value. 3  Some User Defined Functions return a single, scalar data value, such as an int, char, or decimal value.