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147 lines
4.4 KiB
HTML
147 lines
4.4 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>Retrieves special columns</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.odbc-specialcolumns" class="refentry">
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<div class="refnamediv">
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<h1 class="refname">odbc_specialcolumns</h1>
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<p class="verinfo">(PHP 4, PHP 5, PHP 7)</p><p class="refpurpose"><span class="refname">odbc_specialcolumns</span> — <span class="dc-title">Retrieves special columns</span></p>
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</div>
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<div class="refsect1 description" id="refsect1-function.odbc-specialcolumns-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>odbc_specialcolumns</strong></span>
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( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection_id</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$type</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$qualifier</code></span>
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, <span class="methodparam"><span class="type">string</span> <code class="parameter">$table</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$scope</code></span>
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, <span class="methodparam"><span class="type">int</span> <code class="parameter">$nullable</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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Retrieves either the optimal set of columns that uniquely identifies a
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row in the table, or columns that are automatically updated when any
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value in the row is updated by a transaction.
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</p>
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</div>
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<div class="refsect1 parameters" id="refsect1-function.odbc-specialcolumns-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_id</code></dt>
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<dd>
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<p class="para">ODBC 连接标识符，详见
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<span class="function"><a href="odbc_connect.html" class="function">odbc_connect()</a></span>。</p>
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</dd>
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<dt>
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<code class="parameter">type</code></dt>
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<dd>
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<span class="simpara">
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When the type argument is <strong><code>SQL_BEST_ROWID</code></strong>,
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<span class="function"><strong>odbc_specialcolumns()</strong></span> returns the
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column or columns that uniquely identify each row in the table.
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</span>
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<span class="simpara">
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When the type argument is <strong><code>SQL_ROWVER</code></strong>,
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<span class="function"><strong>odbc_specialcolumns()</strong></span> returns the column or columns in the
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specified table, if any, that are automatically updated by the data source
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when any value in the row is updated by any transaction.
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</span>
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</dd>
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<dt>
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<code class="parameter">qualifier</code></dt>
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<dd>
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<p class="para">
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The qualifier.
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</p>
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</dd>
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<dt>
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<code class="parameter">table</code></dt>
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<dd>
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<p class="para">
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The table.
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</p>
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</dd>
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<dt>
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<code class="parameter">scope</code></dt>
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<dd>
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<p class="para">
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The scope, which orders the result set.
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</p>
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</dd>
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<dt>
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<code class="parameter">nullable</code></dt>
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<dd>
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<p class="para">
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The nullable option.
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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.odbc-specialcolumns-returnvalues">
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<h3 class="title">返回值</h3>
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<p class="para">
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Returns an ODBC result identifier or <strong><code>FALSE</code></strong> on
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failure.
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</p>
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<p class="para">
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The result set has the following columns:
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<ul class="itemizedlist">
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<li class="listitem"><span class="simpara">SCOPE</span></li>
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<li class="listitem"><span class="simpara">COLUMN_NAME</span></li>
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<li class="listitem"><span class="simpara">DATA_TYPE</span></li>
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<li class="listitem"><span class="simpara">TYPE_NAME</span></li>
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<li class="listitem"><span class="simpara">PRECISION</span></li>
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<li class="listitem"><span class="simpara">LENGTH</span></li>
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<li class="listitem"><span class="simpara">SCALE</span></li>
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<li class="listitem"><span class="simpara">PSEUDO_COLUMN</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> |