📅  最后修改于: 2020-11-09 05:43:17             🧑  作者: Mango
下表列出了XQuery提供的常用序列函数。
Sr.No | Name & Description |
---|---|
1 |
Counts the items in a sequence. |
2 |
Returns the sum of the items in a sequence. |
3 |
Returns the average of the items in a sequence. |
4 |
Returns the minimum valued item in a sequence. |
5 |
Returns the maximum valued item in a sequence. |
6 |
distinct-values($seq as item()*) Returns select distinct items from a sequence. |
7 |
subsequence($seq as item()*, $startingLoc as xs:double, $length as xs:double) Returns a subset of provided sequence. |
8 |
insert-before($seq as item()*, $position as xs:integer, $inserts as item()*) Inserts an item in a sequence. |
9 |
remove($seq as item()*, $position as xs:integer) Removes an item from a sequence. |
10 |
Returns the reversed sequence. |
11 |
index-of($seq as anyAtomicType()*, $target as anyAtomicType()) Returns indexes as integers to indicate availability of an item within a sequence. |
12 |
Returns the last element of a sequence when used in predicate expression. |
13 |
Used in FLOWR expressions to get the position of an item in a sequence. |