Return object with maximum value from item sequence.

Related Syntax Constructs

The following construct(s) refer to this construct:

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Syntax

fn:max(sequence $sequence) => anySimpleType?

fn:max(sequence $sequence, string $collation) => anySimpleType?

Description

This aggregate function returns the maximum value of all values in a sequence that are of a single type or one of its subtypes, for which the gt operator is defined. For numeric values type promotion is used to coerce all values to a single common type. If the argument is the empty sequence, the function returns the empty sequence.

Argument

$sequence	a sequence of items
$collation	optional valid collation string literal
$flags	modifiers for patternmatching

Example

• Get maximum value from sequence with numeric values:

  let $a := (17, 23, 11)
  return max($a)