📅 最后修改于: 2020-12-25 05:06:11 🧑 作者: Mango
XQuery中使用了很多字符串函数，但是这里我们使用的是选定的函数。
XQuery的常用字符串操作功能列表：
| Index | Name | Description |
|---|---|---|
| 1) | string-length($string as xs:string) as xs:integer | It returns the length of the string. |
| 2) | concat($input as xs:anyatomictype?) as xs:string | It returns the concatenated string as output. |
| 3) | string-join($sequence as xs:string*, $delimiter as xs:string) as xs:string | It returns the combination of items in a sequence separated by a delimiter. |