Oracle® Database SQL Reference 10g Release 2 (10.2) Part Number B14200-01 |
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Syntax
last::=
See Also: "Analytic Functions" for information on syntax, semantics, and restrictions of thequery_partitioning_clause |
Purpose
FIRST
and LAST
are very similar functions. Both are aggregate and analytic functions that operate on a set of values from a set of rows that rank as the FIRST
or LAST
with respect to a given sorting specification. If only one row ranks as FIRST
or LAST
, the aggregate operates on the set with only one element.
This function takes as an argument any numeric datatype or any nonnumeric datatype that can be implicitly converted to a numeric datatype. The function returns the same datatype as the numeric datatype of the argument.
Please refer to FIRST for complete information on this function and for examples of its use.