INTRODUCTION:
------------
This example illustrates the use of LibDMI calls from within a server
UDR. It queries for a column in a table and returns the values as a
set.  While it primarily illustrates the use of LibDMI calls and query 
processing in general, it also illustrates the use of sets and 
returning sets in a server UDR. 


RUNNING TESTS:
-------------
The following steps describe how to register and test this blade.
1. Install the blade and register it to a database.
3. Run 'main.sh all' and this will run the functional tests. 


DESCRIPTION:
-----------
This blade defines one function
function CIter( boolean ) returns set( money not null );

The function depends on the following schema.
table blt_tab
(
	bool_col boolean,
	money_col money,
	set_col set(money not null)
);

This table is created in a custom SQL script, that gets executed when
the DataBlade is registered.

The final set_col is to ensure that the set( money not null) type always
exists.

It executes the query "SELECT money_col FROM blt_tab WHERE bool_col = b"  
where b is the boolean argument to the function.