使用給定輸出生成xquery

我想使用給定輸出生成xquery。我的XML如下：將要產生使用給定輸出生成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>

輸出如下：

<?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>

我試圖生成XQuery作爲如下：

<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>

我的電流輸出：

<?xml version="1.0" encoding="UTF-8"?> 
<student> 
<total>96</total> 
<total>80</total> 
<total>108</total> 
</student>

我不知道如何獲得具有相應總標籤的名稱標籤。我已經存儲在名稱變量尤其是學生的姓名元素

來源

2015-10-16 riya

你可以在這裏發佈當前的輸出嗎？ –

ERROR - 意外標記「{」在路徑表達式 – riya

試試：' {爲$ i的（1至3）返回 {爲$一個在/ S_DB 設$名稱：= $ A /學生[$ I] /名稱返回（$名）} } {爲$ i的（1至3）返回 {爲$一個在/ S_DB 設$ S：= SUM（$ A /學生[$ I] /項目/項目）設$名稱：= $ A /學生[$ i] /名稱回報（$ S）} } '@ris嗨 –

這是一種可能的方式：

<projects> 
{ 
    for $s in /S_db/student 
    return 
    <student> 
    { 
     $s/name, 
     <total>{sum($s/projects/project)}</total> 
    } 
    </student> 
} 
</projects>

xpathtester.com demo

輸出：

<?xml version="1.0" encoding="UTF-8"?> 
<projects> 
    <student> 
     <name>Rusty Nail</name> 
     <total>96</total> 
    </student> 
    <student> 
     <name>Guy Wire</name> 
     <total>80</total> 
    </student> 
    <student> 
     <name>Barb Wire</name> 
     <total>108</total> 
    </student> 
</projects>

來源

2015-10-16 06:29:10 har07

使用給定輸出生成xquery

回答

相關問題