DLURLSCHEME

Returns the scheme from a DataLink value with a linktype of URL. The argument must be an expression that results in a value with data type of DataLink.

Example:

Given a DataLink value that was inserted into column COLA of a row in table TBLA using the scalar function:

       DLVALUE('http://dlfs.almaden.ibm.com/x/y/a.b','URL','A comment')

then the following function operating on that value:

       DLURLSCHEME(COLA)

will return the value: HTTP