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254 lines
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254 lines
27 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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<title>Executes an SQL statement directly</title>
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</head>
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<body class="docs"><div id="layout">
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<div id="layout-content"><div id="function.db2-exec" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">db2_exec</h1>
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<p class="verinfo">(PECL ibm_db2 >= 1.0.0)</p><p class="refpurpose"><span class="refname">db2_exec</span> — <span class="dc-title">
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Executes an SQL statement directly
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</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.db2-exec-description">
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<h3 class="title">说明</h3>
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<div class="methodsynopsis dc-description">
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<span class="methodname"><strong>db2_exec</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$statement</code></span>
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[, <span class="methodparam"><span class="type">array</span> <code class="parameter">$options</code></span>
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] ) : <span class="type">resource</span></div>
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<p class="para rdfs-comment">
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Executes an SQL statement directly.
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</p>
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<p class="para">
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If you plan to interpolate PHP variables into the SQL statement, understand
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that this is one of the more common security exposures. Consider calling
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<span class="function"><a href="db2_prepare.html" class="function">db2_prepare()</a></span> to prepare an SQL statement with parameter
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markers for input values. Then you can call <span class="function"><a href="db2_execute.html" class="function">db2_execute()</a></span>
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to pass in the input values and avoid SQL injection attacks.
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</p>
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<p class="para">
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If you plan to repeatedly issue the same SQL statement with different
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parameters, consider calling <span class="function"><a href="db2_prepare.html" class="function">db2_prepare()</a></span> and
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<span class="function"><a href="db2_execute.html" class="function">db2_execute()</a></span> to enable the database server to reuse its
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access plan and increase the efficiency of your database access.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.db2-exec-parameters">
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<h3 class="title">参数</h3>
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<p class="para">
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<dl>
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<dt>
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<code class="parameter">connection</code></dt>
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<dd>
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<p class="para">
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A valid database connection resource variable as returned from
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<span class="function"><a href="db2_connect.html" class="function">db2_connect()</a></span> or <span class="function"><a href="db2_pconnect.html" class="function">db2_pconnect()</a></span>.
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</p>
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</dd>
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<dt>
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<code class="parameter">statement</code></dt>
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<dd>
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<p class="para">
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An SQL statement. The statement cannot contain any parameter markers.
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</p>
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</dd>
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<dt>
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<code class="parameter">options</code></dt>
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<dd>
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<p class="para">
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An associative array containing statement options. You can use this
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parameter to request a scrollable cursor on database servers that
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support this functionality.
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</p>
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<p class="para">
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For a description of valid statement options, see
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<span class="function"><a href="db2_set_option.html" class="function">db2_set_option()</a></span>.
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</p>
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</dd>
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</dl>
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</p>
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</div>
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<div class="refsect1 returnvalues" id="refsect1-function.db2-exec-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns a statement resource if the SQL statement was issued successfully,
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or <strong><code>FALSE</code></strong> if the database failed to execute the SQL statement.
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</p>
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</div>
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<div class="refsect1 examples" id="refsect1-function.db2-exec-examples">
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<h3 class="title">范例</h3>
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<p class="para">
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<div class="example" id="example-1243">
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<p><strong>Example #1 Creating a table with <span class="function"><strong>db2_exec()</strong></span></strong></p>
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<div class="example-contents"><p>
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The following example uses <span class="function"><strong>db2_exec()</strong></span> to issue a set
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of DDL statements in the process of creating a table.
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// Create the test table<br /></span><span style="color: #0000BB">$create </span><span style="color: #007700">= </span><span style="color: #DD0000">'CREATE TABLE animals (id INTEGER, breed VARCHAR(32),<br /> name CHAR(16), weight DECIMAL(7,2))'</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$result </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$create</span><span style="color: #007700">);<br />if (</span><span style="color: #0000BB">$result</span><span style="color: #007700">) {<br /> print </span><span style="color: #DD0000">"Successfully created the table.\n"</span><span style="color: #007700">;<br />}<br /><br /></span><span style="color: #FF8000">// Populate the test table<br /></span><span style="color: #0000BB">$animals </span><span style="color: #007700">= array(<br /> array(</span><span style="color: #0000BB">0</span><span style="color: #007700">, </span><span style="color: #DD0000">'cat'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Pook'</span><span style="color: #007700">, </span><span style="color: #0000BB">3.2</span><span style="color: #007700">),<br /> array(</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #DD0000">'dog'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Peaches'</span><span style="color: #007700">, </span><span style="color: #0000BB">12.3</span><span style="color: #007700">),<br /> array(</span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #DD0000">'horse'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Smarty'</span><span style="color: #007700">, </span><span style="color: #0000BB">350.0</span><span style="color: #007700">),<br /> array(</span><span style="color: #0000BB">3</span><span style="color: #007700">, </span><span style="color: #DD0000">'gold fish'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Bubbles'</span><span style="color: #007700">, </span><span style="color: #0000BB">0.1</span><span style="color: #007700">),<br /> array(</span><span style="color: #0000BB">4</span><span style="color: #007700">, </span><span style="color: #DD0000">'budgerigar'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Gizmo'</span><span style="color: #007700">, </span><span style="color: #0000BB">0.2</span><span style="color: #007700">),<br /> array(</span><span style="color: #0000BB">5</span><span style="color: #007700">, </span><span style="color: #DD0000">'goat'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Rickety Ride'</span><span style="color: #007700">, </span><span style="color: #0000BB">9.7</span><span style="color: #007700">),<br /> array(</span><span style="color: #0000BB">6</span><span style="color: #007700">, </span><span style="color: #DD0000">'llama'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Sweater'</span><span style="color: #007700">, </span><span style="color: #0000BB">150</span><span style="color: #007700">)<br />);<br /><br />foreach (</span><span style="color: #0000BB">$animals </span><span style="color: #007700">as </span><span style="color: #0000BB">$animal</span><span style="color: #007700">) {<br /> </span><span style="color: #0000BB">$rc </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #DD0000">"INSERT INTO animals (id, breed, name, weight)<br /> VALUES (</span><span style="color: #007700">{</span><span style="color: #0000BB">$animal</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]}</span><span style="color: #DD0000">, '</span><span style="color: #007700">{</span><span style="color: #0000BB">$animal</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">]}</span><span style="color: #DD0000">', '</span><span style="color: #007700">{</span><span style="color: #0000BB">$animal</span><span style="color: #007700">[</span><span style="color: #0000BB">2</span><span style="color: #007700">]}</span><span style="color: #DD0000">', </span><span style="color: #007700">{</span><span style="color: #0000BB">$animal</span><span style="color: #007700">[</span><span style="color: #0000BB">3</span><span style="color: #007700">]}</span><span style="color: #DD0000">)"</span><span style="color: #007700">);<br /> if (</span><span style="color: #0000BB">$rc</span><span style="color: #007700">) {<br /> print </span><span style="color: #DD0000">"Insert... "</span><span style="color: #007700">;<br /> }<br />}<br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Successfully created the table.
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Insert... Insert... Insert... Insert... Insert... Insert... Insert...
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</pre></div>
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</div>
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</div>
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<div class="example" id="example-1244">
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<p><strong>Example #2 Executing a SELECT statement with a scrollable cursor</strong></p>
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<div class="example-contents"><p>
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The following example demonstrates how to request a scrollable cursor for
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an SQL statement issued by <span class="function"><strong>db2_exec()</strong></span>.
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br />$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #0000BB">$database</span><span style="color: #007700">, </span><span style="color: #0000BB">$user</span><span style="color: #007700">, </span><span style="color: #0000BB">$password</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$sql </span><span style="color: #007700">= </span><span style="color: #DD0000">"SELECT name FROM animals<br /> WHERE weight < 10.0<br /> ORDER BY name"</span><span style="color: #007700">;<br />if (</span><span style="color: #0000BB">$conn</span><span style="color: #007700">) {<br /> require_once(</span><span style="color: #DD0000">'prepare.inc'</span><span style="color: #007700">);<br /> </span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$sql</span><span style="color: #007700">, array(</span><span style="color: #DD0000">'cursor' </span><span style="color: #007700">=> </span><span style="color: #0000BB">DB2_SCROLLABLE</span><span style="color: #007700">));<br /> while (</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">)) {<br /> print </span><span style="color: #DD0000">"</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]</span><span style="color: #DD0000">\n"</span><span style="color: #007700">;<br /> }<br />} <br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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Bubbles
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Gizmo
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Pook
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Rickety Ride
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</pre></div>
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</div>
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</div>
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<div class="example" id="example-1245">
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<p><strong>Example #3 Returning XML data as an SQL ResultSet</strong></p>
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<div class="example-contents"><p>
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The following example demonstrates how to work with documents stored
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in a XML column using the SAMPLE database. Using some pretty simple
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SQL/XML, this example returns some of the nodes in a XML document in
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an SQL ResultSet format that most users are familiar with.
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /><br />$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"SAMPLE"</span><span style="color: #007700">, </span><span style="color: #DD0000">"db2inst1"</span><span style="color: #007700">, </span><span style="color: #DD0000">"ibmdb2"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">'SELECT * FROM XMLTABLE(<br /> XMLNAMESPACES (DEFAULT \'http://posample.org\'),<br /> \'db2-fn:xmlcolumn("CUSTOMER.INFO")/customerinfo\'<br /> COLUMNS<br /> "CID" VARCHAR (50) PATH \'@Cid\',<br /> "NAME" VARCHAR (50) PATH \'name\',<br /> "PHONE" VARCHAR (50) PATH \'phone [ @type = "work"]\'<br /> ) AS T<br /> WHERE NAME = \'Kathy Smith\'<br /> '</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br />while(</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_fetch_object</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">)){<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"</span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">CID</span><span style="color: #DD0000"> </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">NAME</span><span style="color: #DD0000"> </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">PHONE</span><span style="color: #DD0000">\n"</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">db2_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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1000 Kathy Smith 416-555-1358
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1001 Kathy Smith 905-555-7258
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</pre></div>
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</div>
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</div>
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<div class="example" id="example-1246">
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<p><strong>Example #4 Performing a "JOIN" with XML data</strong></p>
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<div class="example-contents"><p>
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The following example works with documents stored in 2 different
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XML columns in the SAMPLE database. It creates 2 temporary
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tables from the XML documents from 2 different columns and
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returns an SQL ResultSet with information regarding shipping
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status for the customer.
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /><br />$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"SAMPLE"</span><span style="color: #007700">, </span><span style="color: #DD0000">"db2inst1"</span><span style="color: #007700">, </span><span style="color: #DD0000">"ibmdb2"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">'<br /> SELECT A.CID, A.NAME, A.PHONE, C.PONUM, C.STATUS<br /> FROM<br /> XMLTABLE(<br /> XMLNAMESPACES (DEFAULT \'http://posample.org\'),<br /> \'db2-fn:xmlcolumn("CUSTOMER.INFO")/customerinfo\'<br /> COLUMNS<br /> "CID" BIGINT PATH \'@Cid\',<br /> "NAME" VARCHAR (50) PATH \'name\',<br /> "PHONE" VARCHAR (50) PATH \'phone [ @type = "work"]\'<br /> ) as A,<br /> PURCHASEORDER AS B,<br /> XMLTABLE (<br /> XMLNAMESPACES (DEFAULT \'http://posample.org\'),<br /> \'db2-fn:xmlcolumn("PURCHASEORDER.PORDER")/PurchaseOrder\'<br /> COLUMNS<br /> "PONUM" BIGINT PATH \'@PoNum\',<br /> "STATUS" VARCHAR (50) PATH \'@Status\'<br /> ) as C<br /> WHERE A.CID = B.CUSTID AND<br /> B.POID = C.PONUM AND<br /> A.NAME = \'Kathy Smith\'<br />'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br />while(</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_fetch_object</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">)){<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"</span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">CID</span><span style="color: #DD0000"> </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">NAME</span><span style="color: #DD0000"> </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">PHONE</span><span style="color: #DD0000"> </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">PONUM</span><span style="color: #DD0000"> </span><span style="color: #0000BB">$row</span><span style="color: #007700">-></span><span style="color: #0000BB">STATUS</span><span style="color: #DD0000">\n"</span><span style="color: #007700">);<br />}<br /><br /></span><span style="color: #0000BB">db2_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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1001 Kathy Smith 905-555-7258 5002 Shipped
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</pre></div>
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</div>
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</div>
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<div class="example" id="example-1247">
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<p><strong>Example #5 Returning SQL data as part of a larger XML document</strong></p>
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<div class="example-contents"><p>
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The following example works with a portion of the PRODUCT.DESCRIPTION
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documents in the SAMPLE database. It creates a XML document containing
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product description (XML data) and pricing info (SQL data).
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</p></div>
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<div class="example-contents">
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<div class="phpcode"><pre><span style="color: #000000">
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<span style="color: #0000BB"><?php<br /><br />$conn </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_connect</span><span style="color: #007700">(</span><span style="color: #DD0000">"SAMPLE"</span><span style="color: #007700">, </span><span style="color: #DD0000">"db2inst1"</span><span style="color: #007700">, </span><span style="color: #DD0000">"ibmdb2"</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$query </span><span style="color: #007700">= </span><span style="color: #DD0000">'<br />SELECT<br />XMLSERIALIZE(<br />XMLQUERY(\'<br /> declare boundary-space strip;<br /> declare default element namespace "http://posample.org";<br /> <promoList> {<br /> for $prod in $doc/product<br /> where $prod/description/price < 10.00<br /> order by $prod/description/price ascending<br /> return(<br /> <promoitem> {<br /> $prod,<br /> <startdate> {$start} </startdate>,<br /> <enddate> {$end} </enddate>,<br /> <promoprice> {$promo} </promoprice><br /> } </promoitem><br /> )<br /> } </promoList><br />\' passing by ref DESCRIPTION AS "doc",<br />PROMOSTART as "start",<br />PROMOEND as "end",<br />PROMOPRICE as "promo"<br />RETURNING SEQUENCE)<br />AS CLOB (32000))<br />AS NEW_PRODUCT_INFO<br />FROM PRODUCT<br />WHERE PID = \'100-100-01\'<br />'</span><span style="color: #007700">;<br /><br /></span><span style="color: #0000BB">$stmt </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_exec</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">, </span><span style="color: #0000BB">$query</span><span style="color: #007700">);<br /><br />while(</span><span style="color: #0000BB">$row </span><span style="color: #007700">= </span><span style="color: #0000BB">db2_fetch_array</span><span style="color: #007700">(</span><span style="color: #0000BB">$stmt</span><span style="color: #007700">)){<br /> </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"</span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">]</span><span style="color: #DD0000">\n"</span><span style="color: #007700">);<br />}<br /></span><span style="color: #0000BB">db2_close</span><span style="color: #007700">(</span><span style="color: #0000BB">$conn</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">?></span>
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</span>
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</pre></div>
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</div>
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<div class="example-contents"><p>以上例程会输出：</p></div>
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<div class="example-contents screen">
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<div class="cdata"><pre>
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<promoList xmlns="http://posample.org">
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<promoitem>
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<product pid="100-100-01">
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<description>
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<name>Snow Shovel, Basic 22 inch</name>
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<details>Basic Snow Shovel, 22 inches wide, straight handle with D-Grip</details>
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<price>9.99</price>
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<weight>1 kg</weight>
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</description>
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</product>
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|
<startdate>2004-11-19</startdate>
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<enddate>2004-12-19</enddate>
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<promoprice>7.25</promoprice>
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</promoitem>
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</promoList>
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</pre></div>
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</div>
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</div>
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</p>
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</div>
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<div class="refsect1 seealso" id="refsect1-function.db2-exec-seealso">
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<h3 class="title">参见</h3>
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<p class="para">
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<ul class="simplelist">
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<li class="member"><span class="function"><a href="db2_execute.html" class="function" rel="rdfs-seeAlso">db2_execute()</a> - Executes a prepared SQL statement</span></li>
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<li class="member"><span class="function"><a href="db2_prepare.html" class="function" rel="rdfs-seeAlso">db2_prepare()</a> - Prepares an SQL statement to be executed</span></li>
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</ul>
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</p>
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</div>
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</div></div></div></body></html> |