(B)0[mfirst-clause =
qqqqqq> [4mFIRST[m qqqq> value-expr qqqqqq>
Specifies how many records are in the record stream formed by
the record selection expression. If you include the element FIRST
n, the record stream has no more than n records. The argument n
should be a positive integer or a value expression that evaluates
to a positive integer. For more information on value expressions,
ask for HELP on Value_expr.
Additional Information:
explode
extract