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.
Creating a User-Defined Aggregate. The process of creating a user-defined aggregate function has two steps, illustrated in Example 11-2 and Example 11-3. Both examples use the SpatialUnion() aggregate function defined by the spatial cartridge. The function computes the bounding geometry over a set of input geometries.