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https://github.com/sigmasternchen/php-doc-en
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for file in `ack -i '\bA\s+SQL' -l`; do perl -i -pe 's/\b(a)(\s+SQL)/\1n\2/gi' $file; done git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@300101 c90b9560-bf6c-de11-be94-00142212c4b1
379 lines
10 KiB
XML
379 lines
10 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- Generated by xml_proto.php v2.2. Found in /scripts directory of phpdoc. -->
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<refentry xml:id="function.db2-exec" xmlns="http://docbook.org/ns/docbook">
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<refnamediv>
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<refname>db2_exec</refname>
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<refpurpose>
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Executes an SQL statement directly
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</refpurpose>
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</refnamediv>
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<refsect1 role="description">
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&reftitle.description;
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<methodsynopsis>
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<type>resource</type><methodname>db2_exec</methodname>
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<methodparam><type>resource</type><parameter>connection</parameter></methodparam>
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<methodparam><type>string</type><parameter>statement</parameter></methodparam>
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<methodparam choice="opt"><type>array</type><parameter>options</parameter></methodparam>
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</methodsynopsis>
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<para>
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Executes an SQL statement directly.
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</para>
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<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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<function>db2_prepare</function> to prepare an SQL statement with parameter
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markers for input values. Then you can call <function>db2_execute</function>
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to pass in the input values and avoid SQL injection attacks.
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</para>
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<para>
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If you plan to repeatedly issue the same SQL statement with different
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parameters, consider calling <function>db2_prepare</function> and
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<function>db2_execute</function> 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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</para>
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</refsect1>
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<refsect1 role="parameters">
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>connection</parameter></term>
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<listitem>
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<para>
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A valid database connection resource variable as returned from
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<function>db2_connect</function> or <function>db2_pconnect</function>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>statement</parameter></term>
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<listitem>
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<para>
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An SQL statement. The statement cannot contain any parameter markers.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>options</parameter></term>
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<listitem>
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<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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</para>
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<para>
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For a description of valid statement options, see
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<function>db2_set_option</function>.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1>
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<refsect1 role="returnvalues">
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&reftitle.returnvalues;
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<para>
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Returns a statement resource if the SQL statement was issued successfully,
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or &false; if the database failed to execute the SQL statement.
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</para>
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</refsect1>
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<refsect1 role="examples">
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&reftitle.examples;
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<para>
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<example>
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<title>Creating a table with <function>db2_exec</function></title>
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<para>
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The following example uses <function>db2_exec</function> to issue a set
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of DDL statements in the process of creating a table.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect($database, $user, $password);
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// Create the test table
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$create = 'CREATE TABLE animals (id INTEGER, breed VARCHAR(32),
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name CHAR(16), weight DECIMAL(7,2))';
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$result = db2_exec($conn, $create);
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if ($result) {
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print "Successfully created the table.\n";
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}
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// Populate the test table
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$animals = array(
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array(0, 'cat', 'Pook', 3.2),
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array(1, 'dog', 'Peaches', 12.3),
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array(2, 'horse', 'Smarty', 350.0),
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array(3, 'gold fish', 'Bubbles', 0.1),
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array(4, 'budgerigar', 'Gizmo', 0.2),
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array(5, 'goat', 'Rickety Ride', 9.7),
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array(6, 'llama', 'Sweater', 150)
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);
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foreach ($animals as $animal) {
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$rc = db2_exec($conn, "INSERT INTO animals (id, breed, name, weight)
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VALUES ({$animal[0]}, '{$animal[1]}', '{$animal[2]}', {$animal[3]})");
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if ($rc) {
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print "Insert... ";
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}
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}
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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Successfully created the table.
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Insert... Insert... Insert... Insert... Insert... Insert... Insert...
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]]>
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</screen>
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</example>
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<example>
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<title>Executing a SELECT statement with a scrollable cursor</title>
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<para>
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The following example demonstrates how to request a scrollable cursor for
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an SQL statement issued by <function>db2_exec</function>.
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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect($database, $user, $password);
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$sql = "SELECT name FROM animals
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WHERE weight < 10.0
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ORDER BY name";
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if ($conn) {
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require_once('prepare.inc');
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$stmt = db2_exec($conn, $sql, array('cursor' => DB2_SCROLLABLE));
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while ($row = db2_fetch_array($stmt)) {
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print "$row[0]\n";
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}
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}
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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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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]]>
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</screen>
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</example>
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<example>
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<title>Returning XML data as an SQL ResultSet</title>
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<para>
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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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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect("SAMPLE", "db2inst1", "ibmdb2");
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$query = 'SELECT * FROM XMLTABLE(
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XMLNAMESPACES (DEFAULT \'http://posample.org\'),
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\'db2-fn:xmlcolumn("CUSTOMER.INFO")/customerinfo\'
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COLUMNS
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"CID" VARCHAR (50) PATH \'@Cid\',
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"NAME" VARCHAR (50) PATH \'name\',
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"PHONE" VARCHAR (50) PATH \'phone [ @type = "work"]\'
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) AS T
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WHERE NAME = \'Kathy Smith\'
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';
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$stmt = db2_exec($conn, $query);
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while($row = db2_fetch_object($stmt)){
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printf("$row->CID $row->NAME $row->PHONE\n");
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}
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db2_close($conn);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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1000 Kathy Smith 416-555-1358
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1001 Kathy Smith 905-555-7258
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]]>
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</screen>
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</example>
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<example>
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<title>Performing a "JOIN" with XML data</title>
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<para>
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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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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect("SAMPLE", "db2inst1", "ibmdb2");
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$query = '
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SELECT A.CID, A.NAME, A.PHONE, C.PONUM, C.STATUS
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FROM
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XMLTABLE(
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XMLNAMESPACES (DEFAULT \'http://posample.org\'),
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\'db2-fn:xmlcolumn("CUSTOMER.INFO")/customerinfo\'
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COLUMNS
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"CID" BIGINT PATH \'@Cid\',
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"NAME" VARCHAR (50) PATH \'name\',
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"PHONE" VARCHAR (50) PATH \'phone [ @type = "work"]\'
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) as A,
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PURCHASEORDER AS B,
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XMLTABLE (
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XMLNAMESPACES (DEFAULT \'http://posample.org\'),
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\'db2-fn:xmlcolumn("PURCHASEORDER.PORDER")/PurchaseOrder\'
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COLUMNS
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"PONUM" BIGINT PATH \'@PoNum\',
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"STATUS" VARCHAR (50) PATH \'@Status\'
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) as C
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WHERE A.CID = B.CUSTID AND
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B.POID = C.PONUM AND
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A.NAME = \'Kathy Smith\'
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';
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$stmt = db2_exec($conn, $query);
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while($row = db2_fetch_object($stmt)){
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printf("$row->CID $row->NAME $row->PHONE $row->PONUM $row->STATUS\n");
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}
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db2_close($conn);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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1001 Kathy Smith 905-555-7258 5002 Shipped
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]]>
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</screen>
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</example>
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<example>
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<title>Returning SQL data as part of a larger XML document</title>
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<para>
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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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</para>
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<programlisting role="php">
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<![CDATA[
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<?php
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$conn = db2_connect("SAMPLE", "db2inst1", "ibmdb2");
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$query = '
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SELECT
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XMLSERIALIZE(
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XMLQUERY(\'
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declare boundary-space strip;
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declare default element namespace "http://posample.org";
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<promoList> {
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for $prod in $doc/product
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where $prod/description/price < 10.00
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order by $prod/description/price ascending
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return(
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<promoitem> {
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$prod,
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<startdate> {$start} </startdate>,
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<enddate> {$end} </enddate>,
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<promoprice> {$promo} </promoprice>
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} </promoitem>
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)
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} </promoList>
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\' passing by ref DESCRIPTION AS "doc",
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PROMOSTART as "start",
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PROMOEND as "end",
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PROMOPRICE as "promo"
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RETURNING SEQUENCE)
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AS CLOB (32000))
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AS NEW_PRODUCT_INFO
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FROM PRODUCT
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WHERE PID = \'100-100-01\'
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';
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$stmt = db2_exec($conn, $query);
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while($row = db2_fetch_array($stmt)){
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printf("$row[0]\n");
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}
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db2_close($conn);
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?>
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]]>
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</programlisting>
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&example.outputs;
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<screen>
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<![CDATA[
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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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]]>
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</screen>
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</example>
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</para>
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</refsect1>
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<refsect1 role="seealso">
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><function>db2_execute</function></member>
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<member><function>db2_prepare</function></member>
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</simplelist>
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</para>
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</refsect1>
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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