mirror of
https://github.com/fofolee/uTools-Manuals.git
synced 2025-06-17 21:16:57 +08:00
285 lines
8.7 KiB
HTML
285 lines
8.7 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>Returns a result set listing the unique row identifier columns for a table</title>
|
|
</head>
|
|
<body class="docs"><div id="layout">
|
|
<div id="layout-content"><div id="function.db2-special-columns" class="refentry">
|
|
<div class="refnamediv">
|
|
<h1 class="refname">db2_special_columns</h1>
|
|
<p class="verinfo">(PECL ibm_db2 >= 1.0.0)</p><p class="refpurpose"><span class="refname">db2_special_columns</span> — <span class="dc-title">
|
|
Returns a result set listing the unique row identifier columns for a table
|
|
</span></p>
|
|
|
|
</div>
|
|
<div class="refsect1 description" id="refsect1-function.db2-special-columns-description">
|
|
<h3 class="title">说明</h3>
|
|
<div class="methodsynopsis dc-description">
|
|
<span class="methodname"><strong>db2_special_columns</strong></span>
|
|
( <span class="methodparam"><span class="type">resource</span> <code class="parameter">$connection</code></span>
|
|
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$qualifier</code></span>
|
|
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$schema</code></span>
|
|
, <span class="methodparam"><span class="type">string</span> <code class="parameter">$table_name</code></span>
|
|
, <span class="methodparam"><span class="type">int</span> <code class="parameter">$scope</code></span>
|
|
) : <span class="type">resource</span></div>
|
|
|
|
|
|
<p class="para rdfs-comment">
|
|
Returns a result set listing the unique row identifier columns for a table.
|
|
</p>
|
|
|
|
</div>
|
|
|
|
<div class="refsect1 parameters" id="refsect1-function.db2-special-columns-parameters">
|
|
<h3 class="title">参数</h3>
|
|
<p class="para">
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">connection</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">qualifier</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
A qualifier for DB2 databases running on OS/390 or z/OS servers. For
|
|
other databases, pass <strong><code>NULL</code></strong> or an empty string.
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">schema</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
The schema which contains the tables.
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">table_name</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
The name of the table.
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
|
|
<dt>
|
|
<code class="parameter">scope</code></dt>
|
|
|
|
<dd>
|
|
|
|
<p class="para">
|
|
Integer value representing the minimum duration for which the
|
|
unique row identifier is valid. This can be one of the following
|
|
values:
|
|
<table class="doctable informaltable">
|
|
|
|
<thead>
|
|
<tr>
|
|
<th>Integer value</th>
|
|
<th>SQL constant</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
|
|
</thead>
|
|
|
|
<tbody class="tbody">
|
|
<tr>
|
|
<td>0</td>
|
|
<td>SQL_SCOPE_CURROW</td>
|
|
<td>Row identifier is valid only while the cursor is positioned
|
|
on the row.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>1</td>
|
|
<td>SQL_SCOPE_TRANSACTION</td>
|
|
<td>Row identifier is valid for the duration of the
|
|
transaction.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>2</td>
|
|
<td>SQL_SCOPE_SESSION</td>
|
|
<td>Row identifier is valid for the duration of the
|
|
connection.</td>
|
|
</tr>
|
|
|
|
</tbody>
|
|
|
|
</table>
|
|
|
|
</p>
|
|
</dd>
|
|
|
|
|
|
</dl>
|
|
|
|
</p>
|
|
</div>
|
|
|
|
<div class="refsect1 returnvalues" id="refsect1-function.db2-special-columns-returnvalues">
|
|
<h3 class="title">返回值</h3>
|
|
<p class="para">
|
|
Returns a statement resource with a result set containing rows with unique
|
|
row identifier information for a table. The rows are composed of the
|
|
following columns:
|
|
<table class="doctable informaltable">
|
|
|
|
<thead>
|
|
<tr>
|
|
<th>Column name</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
|
|
</thead>
|
|
|
|
<tbody class="tbody">
|
|
<tr>
|
|
<td>SCOPE</td>
|
|
<td>
|
|
<p class="para">
|
|
<table class="doctable informaltable">
|
|
|
|
<thead>
|
|
<tr>
|
|
<th>Integer value</th>
|
|
<th>SQL constant</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
|
|
</thead>
|
|
|
|
<tbody class="tbody">
|
|
<tr>
|
|
<td>0</td>
|
|
<td>SQL_SCOPE_CURROW</td>
|
|
<td>Row identifier is valid only while the cursor is positioned
|
|
on the row.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>1</td>
|
|
<td>SQL_SCOPE_TRANSACTION</td>
|
|
<td>Row identifier is valid for the duration of the
|
|
transaction.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>2</td>
|
|
<td>SQL_SCOPE_SESSION</td>
|
|
<td>Row identifier is valid for the duration of the
|
|
connection.</td>
|
|
</tr>
|
|
|
|
</tbody>
|
|
|
|
</table>
|
|
|
|
</p>
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>COLUMN_NAME</td>
|
|
<td>Name of the unique column.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>DATA_TYPE</td>
|
|
<td>SQL data type for the column.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>TYPE_NAME</td>
|
|
<td>Character string representation of the SQL data type for the
|
|
column.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>COLUMN_SIZE</td>
|
|
<td>An integer value representing the size of the column.</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>BUFFER_LENGTH</td>
|
|
<td>
|
|
Maximum number of bytes necessary to store data from this column.
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>DECIMAL_DIGITS</td>
|
|
<td>
|
|
The scale of the column, or <strong><code>NULL</code></strong> where scale is not applicable.
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>NUM_PREC_RADIX</td>
|
|
<td>
|
|
An integer value of either <em>10</em> (representing
|
|
an exact numeric data type), <em>2</em> (representing an
|
|
approximate numeric data type), or <strong><code>NULL</code></strong> (representing a data type for
|
|
which radix is not applicable).
|
|
</td>
|
|
</tr>
|
|
|
|
<tr>
|
|
<td>PSEUDO_COLUMN</td>
|
|
<td>Always returns 1.</td>
|
|
</tr>
|
|
|
|
</tbody>
|
|
|
|
</table>
|
|
|
|
|
|
</p>
|
|
</div>
|
|
|
|
|
|
|
|
|
|
<div class="refsect1 seealso" id="refsect1-function.db2-special-columns-seealso">
|
|
<h3 class="title">参见</h3>
|
|
<p class="para">
|
|
<ul class="simplelist">
|
|
<li class="member"><span class="function"><a href="db2_column_privileges.html" class="function" rel="rdfs-seeAlso">db2_column_privileges()</a> - Returns a result set listing the columns and associated privileges for a table</span></li>
|
|
<li class="member"><span class="function"><a href="db2_columns.html" class="function" rel="rdfs-seeAlso">db2_columns()</a> - Returns a result set listing the columns and associated metadata for a table</span></li>
|
|
<li class="member"><span class="function"><a href="db2_foreign_keys.html" class="function" rel="rdfs-seeAlso">db2_foreign_keys()</a> - Returns a result set listing the foreign keys for a table</span></li>
|
|
<li class="member"><span class="function"><a href="db2_primary_keys.html" class="function" rel="rdfs-seeAlso">db2_primary_keys()</a> - Returns a result set listing primary keys for a table</span></li>
|
|
<li class="member"><span class="function"><a href="db2_procedure_columns.html" class="function" rel="rdfs-seeAlso">db2_procedure_columns()</a> - Returns a result set listing stored procedure parameters</span></li>
|
|
<li class="member"><span class="function"><a href="db2_procedures.html" class="function" rel="rdfs-seeAlso">db2_procedures()</a> - Returns a result set listing the stored procedures registered in a database</span></li>
|
|
<li class="member"><span class="function"><a href="db2_statistics.html" class="function" rel="rdfs-seeAlso">db2_statistics()</a> - Returns a result set listing the index and statistics for a table</span></li>
|
|
<li class="member"><span class="function"><a href="db2_table_privileges.html" class="function" rel="rdfs-seeAlso">db2_table_privileges()</a> - Returns a result set listing the tables and associated privileges in a database</span></li>
|
|
<li class="member"><span class="function"><a href="db2_tables.html" class="function" rel="rdfs-seeAlso">db2_tables()</a> - Returns a result set listing the tables and associated metadata in a database</span></li>
|
|
</ul>
|
|
</p>
|
|
</div>
|
|
|
|
|
|
</div></div></div></body></html> |