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  2. MIDRANGE-L
  3. October 2004

sql syntax for update

How would i code a sql update statement
to change only the first 8 characters in a 40 byte alpha field?
(i need to substring)
update filename set field1 = 'XXXXXXXX'
where field2 = 'W'

I have 2 diff as/400 based sql books & none show this (which
seems pretty basic).  
tia
jim

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