How do I perform a meaningful join on monSysStatement and monSysSQLText?

Question

I'm having difficulty understanding the relationship between records in the monSysStatement table and the monSysSQLText. Generally speaking, monSysStatement appears to contain statistics on SQL statements, while monSysSQLText contains the corresponding text. However, I've not been able to find any clear documentation on which fields connect the two.
I'm looking for something like the following: (SQL Text, CPU Time, Memory Usage)

Answer 1

You're (obviously?) going to be limited to SPID/KPID/InstanceID/BatchID.
Keep in mind that a 'batch' of SQL text could include many statements, eg:
=================== 1 batch, 5 statements
declare @a int
select @a = 5
select @a = @a + @@maxpagesize
select getdate()
select 'get me out of here'
go
=================== 1 batch, # of statements depends on size of mycur result set
declare @myvalue varchar(100)
open mycur
fetch mycur into @myvalue
while @@sqlstatus = 0
begin
     ... do something with @myvalue
     fetch mycur into @myvalue
end
close mycur
go
===================
SQL text is stored as a batch (not as individual statements) in monSysSQLText, so there's no easy way to match a statement to a line of SQL text.  (I'm not saying it can't be done with some additional T-SQL programming ... it's just not doable with the current MDA table column definitions.)