Marklogicѧϰ ¡ª¡ª XQueryÓï·¨»ù´¡4

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                                            <p>1.Ò»¸öÍêÕûµÄFLWORÓï·¨</p>



<pre class="blockcode"><code class="language-xquery hljs lasso">for <span class="hljs-variable">$prod</span> <span class="hljs-keyword">in</span> doc(<span class="hljs-string">"/product/catalog.xml"</span>)<span class="hljs-comment">//product</span>
<span class="hljs-keyword">let</span> <span class="hljs-variable">$prodDept</span> <span class="hljs-subst">:=</span> <span class="hljs-variable">$prod</span><span class="hljs-subst">/</span>@dept
<span class="hljs-keyword">where</span> <span class="hljs-variable">$prodDept</span> <span class="hljs-subst">=</span> <span class="hljs-string">"Äϼ«ÈË"</span> <span class="hljs-literal">or</span> <span class="hljs-variable">$prodDept</span> <span class="hljs-subst">=</span> <span class="hljs-string">"¹û¹ú¼Ê"</span>
<span class="hljs-keyword">return</span> <span class="hljs-variable">$prod</span>/name</code></pre>

<p>·µ»Ø£º</p>



<pre class="blockcode"><code class="hljs xml"><span class="hljs-tag">&lt;<span class="hljs-title">name</span> <span class="hljs-attribute">language</span>=<span class="hljs-value">"cn"</span>&gt;</span>ëÄØÍâÌ×<span class="hljs-tag">&lt;/<span class="hljs-title">name</span>&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-title">name</span> <span class="hljs-attribute">language</span>=<span class="hljs-value">"cn"</span>&gt;</span>Å£×пã<span class="hljs-tag">&lt;/<span class="hljs-title">name</span>&gt;</span></code></pre>

<p>2.·¶Î§±í´ïʽ</p>



<pre class="blockcode"><code class="language-xquery hljs bash"><span class="hljs-keyword">for</span> <span class="hljs-variable">$i</span> <span class="hljs-keyword">in</span> <span class="hljs-number">1</span> to <span class="hljs-number">3</span>
<span class="hljs-keyword">return</span> &lt;ele&gt;{<span class="hljs-variable">$i</span>}&lt;/ele&gt;</code></pre>

<p>·µ»Ø£º</p>



<pre class="blockcode"><code class="hljs xml"><span class="hljs-tag">&lt;<span class="hljs-title">ele</span>&gt;</span>1<span class="hljs-tag">&lt;/<span class="hljs-title">ele</span>&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-title">ele</span>&gt;</span>2<span class="hljs-tag">&lt;/<span class="hljs-title">ele</span>&gt;</span>
<span class="hljs-tag">&lt;<span class="hljs-title">ele</span>&gt;</span>3<span class="hljs-tag">&lt;/<span class="hljs-title">ele</span>&gt;</span></code></pre>

<p>3.¶à¸öforÓï¾äµþ¼Ó</p>

<pre class="blockcode"><code class="hljs ruby"><span class="hljs-keyword">for</span> <span class="hljs-variable">$i</span> <span class="hljs-keyword">in</span> (<span class="hljs-number">1</span>, <span class="hljs-number">2</span>)
<span class="hljs-keyword">for</span> <span class="hljs-variable">$j</span> <span class="hljs-keyword">in</span> (<span class="hljs-string">"a"</span>, <span class="hljs-string">"b"</span>)
<span class="hljs-keyword">return</span>&lt;ele&gt;i is {<span class="hljs-variable">$i</span>} <span class="hljs-keyword">and</span> j is {<span class="hljs-variable">$j</span>}&lt;<span class="hljs-regexp">/ele&gt;</span></code></pre>

<p>·µ»Ø£º</p>



<pre class="blockcode"><code class="hljs vbnet">&lt;ele&gt;i <span class="hljs-keyword">is</span> <span class="hljs-number">1</span> <span class="hljs-keyword">and</span> j <span class="hljs-keyword">is</span> a&lt;/ele&gt;
&lt;ele&gt;i <span class="hljs-keyword">is</span> <span class="hljs-number">1</span> <span class="hljs-keyword">and</span> j <span class="hljs-keyword">is</span> b&lt;/ele&gt;
&lt;ele&gt;i <span class="hljs-keyword">is</span> <span class="hljs-number">2</span> <span class="hljs-keyword">and</span> j <span class="hljs-keyword">is</span> a&lt;/ele&gt;
&lt;ele&gt;i <span class="hljs-keyword">is</span> <span class="hljs-number">2</span> <span class="hljs-keyword">and</span> j <span class="hljs-keyword">is</span> b&lt;/ele&gt;</code></pre>

<p>4.Ò»¸öforÓï¾ä°ó¶¨¶à¸ö±äÁ¿</p>

<pre class="blockcode"><code class="hljs ruby"><span class="hljs-keyword">for</span> <span class="hljs-variable">$i</span> <span class="hljs-keyword">in</span> (<span class="hljs-number">1</span>, <span class="hljs-number">2</span>), <span class="hljs-variable">$j</span> <span class="hljs-keyword">in</span> (<span class="hljs-string">"a"</span>, <span class="hljs-string">"b"</span>)
<span class="hljs-keyword">return</span> &lt;ele&gt;i is {<span class="hljs-variable">$i</span>} <span class="hljs-keyword">and</span> j is {<span class="hljs-variable">$j</span>}&lt;<span class="hljs-regexp">/ele&gt;</span></code></pre>

<p>·µ»Ø£º</p>

<pre class="blockcode"><code class="hljs vbnet">&lt;ele&gt;i <span class="hljs-keyword">is</span> <span class="hljs-number">1</span> <span class="hljs-keyword">and</span> j <span class="hljs-keyword">is</span> a&lt;/ele&gt;
&lt;ele&gt;i <span class="hljs-keyword">is</span> <span class="hljs-number">1</span> <span class="hljs-keyword">and</span> j <span class="hljs-keyword">is</span> b&lt;/ele&gt;
&lt;ele&gt;i <span class="hljs-keyword">is</span> <span class="hljs-number">2</span> <span class="hljs-keyword">and</span> j <span class="hljs-keyword">is</span> a&lt;/ele&gt;
&lt;ele&gt;i <span class="