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In this case the functions are very simple. Each of the functions described would get a different field out of the same file. I'm just wondering if this is an I/O nightmare in the making. Dave >>It depends on how complex your functions are. >>Rule of thumb I use with my UDFs is to make them as simple as possible >>(single purpose functions). >>If your UDFs are rather simple (i.e. add these two numbers and return the >>sum, convert decimal to date), there shouldn't be much overhead. >>If each function runs another SQL statement in turn and the FROM file has >>lots of records, I can see lots of 'slamming' going on. >> >>Test in on a large file. >> >>Elvis >>
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