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我想使用给定输出生成xquery。 我的XML如下:将要产生使用给定输出生成xquery
<?xml version="1.0" encoding="UTF-8"?>
<S_db>
<student id="94811">
<name>Rusty Nail</name>
<quizzes>
<quiz>16</quiz>
<quiz>12</quiz>
</quizzes>
<projects>
<project>44</project>
<project>52</project>
</projects>
<exams>
<exam>77</exam>
<exam>68</exam>
<exam>49</exam>
</exams>
</student>
<student id="2562">
<name>Guy Wire</name>
<quizzes>
<quiz>15</quiz>
<quiz>23</quiz>
</quizzes>
<projects>
<project>33</project>
<project>47</project>
</projects>
<exams>
<exam>78</exam>
<exam>86</exam>
<exam>88</exam>
</exams>
</student>
<student id="137745">
<name>Barb Wire</name>
<quizzes>
<quiz>20</quiz>
<quiz>25</quiz>
</quizzes>
<projects>
<project>48</project>
<project>60</project>
</projects>
<exams>
<exam>38</exam>
<exam>48</exam>
<exam>66</exam>
</exams>
</student>
</S_db>
输出如下:
<?xml version="1.0" encoding="UTF‑8"?>
<projects>
<student>
<name>Barb Wire</name>
<total>108</total>
</student>
<student>
<name>Guy Wire</name>
<total>80</total>
</student>
<student>
<name>Rusty Nail</name>
<total>96</total>
</student>
我试图生成XQuery作为如下:
<student>
{for $i in (1 to 3) return
<total> { for $a in /S_db
let $s := sum($a/student[$i]/projects/project)
let $name := $a/student[$i]/name
return ($s)}
</total>
}
</student>
我的电流输出:
<?xml version="1.0" encoding="UTF-8"?>
<student>
<total>96</total>
<total>80</total>
<total>108</total>
</student>
我不知道如何获得具有相应总标签的名称标签。 我已经存储在名称变量尤其是学生的姓名元素
你可以在这里发布当前的输出吗? –
ERROR - 意外标记 “{” 在路径表达式 – riya
试试:' {为$ i的(1至3)返回 {为$一个在/ S_DB 设$名称:= $ A /学生[$ I] /名称 返回($名)} } {为$ i的(1至3)返回 {为$一个在/ S_DB 设$ S:= SUM($ A /学生[$ I] /项目/项目) 设$名称:= $ A /学生[$ i] /名称 回报($ S)} } '@ris嗨 –