[U2] [UV] Select Question

[iggchamp]

Hi all,

Can someone tell me the diference between the following two examples of 
executing an external select?

SELECT FILE TO LIST
LOOP
    READNEXT ID FROM LIST ELSE ID = @AM
UNTIL ID = @AM DO
REPEAT

SELECT FILE
LOOP
    READNEXT ID ELSE ID = @AM
UNTIL ID = @AM DO
REPEAT

Someone pointed out to me that there is overhead in selecting to a list that I 
need not be exposing myself to.  Aren't they both kind of reading from a list 
somewhere anyways?

Thanks
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