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| author | Joe Orton <jorton@apache.org> | 2020-08-19 07:31:23 +0000 |
|---|---|---|
| committer | Joe Orton <jorton@apache.org> | 2020-08-19 07:31:23 +0000 |
| commit | 7f6aec2cf7fb0caaa93dc98e25968d58b60107fd (patch) | |
| tree | 2218e4fdf202d9781910e0218b690acbdc92a0d5 /docs/manual/mod/mod_dbd.html.en | |
| parent | ac888899b7c2cecdda5ed98ad5dd73607b1ca5bc (diff) | |
| download | httpd-7f6aec2cf7fb0caaa93dc98e25968d58b60107fd.tar.gz | |
Follow up to r1880368 and r1880980:
Complete move to .en.utf8 suffixes in two steps:
1. From fresh checkout, renamed all existing files:
$ for f in *.html.en */*.html.en; do svn mv $f $f.utf8; done
2. Ran "./build.sh all" which also regenerates the typemaps.
[skip ci]
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1880982 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'docs/manual/mod/mod_dbd.html.en')
| -rw-r--r-- | docs/manual/mod/mod_dbd.html.en | 393 |
1 files changed, 0 insertions, 393 deletions
diff --git a/docs/manual/mod/mod_dbd.html.en b/docs/manual/mod/mod_dbd.html.en deleted file mode 100644 index 057edb184d..0000000000 --- a/docs/manual/mod/mod_dbd.html.en +++ /dev/null @@ -1,393 +0,0 @@ -<?xml version="1.0" encoding="UTF-8"?> -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> -<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en"><head> -<meta content="text/html; charset=UTF-8" http-equiv="Content-Type" /> -<!-- - XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX - This file is generated from xml source: DO NOT EDIT - XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX - --> -<title>mod_dbd - Apache HTTP Server Version 2.5</title> -<link href="../style/css/manual.css" rel="stylesheet" media="all" type="text/css" title="Main stylesheet" /> -<link href="../style/css/manual-loose-100pc.css" rel="alternate stylesheet" media="all" type="text/css" title="No Sidebar - Default font size" /> -<link href="../style/css/manual-print.css" rel="stylesheet" media="print" type="text/css" /><link rel="stylesheet" type="text/css" href="../style/css/prettify.css" /> -<script src="../style/scripts/prettify.min.js" type="text/javascript"> -</script> - -<link href="../images/favicon.ico" rel="shortcut icon" /></head> -<body> -<div id="page-header"> -<p class="menu"><a href="../mod/">Modules</a> | <a href="../mod/quickreference.html">Directives</a> | <a href="http://wiki.apache.org/httpd/FAQ">FAQ</a> | <a href="../glossary.html">Glossary</a> | <a href="../sitemap.html">Sitemap</a></p> -<p class="apache">Apache HTTP Server Version 2.5</p> -<img alt="" src="../images/feather.png" /></div> -<div class="up"><a href="./"><img title="<-" alt="<-" src="../images/left.gif" /></a></div> -<div id="path"> -<a href="http://www.apache.org/">Apache</a> > <a href="http://httpd.apache.org/">HTTP Server</a> > <a href="http://httpd.apache.org/docs/">Documentation</a> > <a href="../">Version 2.5</a> > <a href="./">Modules</a></div> -<div id="page-content"> -<div id="preamble"><h1>Apache Module mod_dbd</h1> -<div class="toplang"> -<p><span>Available Languages: </span><a href="../en/mod/mod_dbd.html" title="English"> en </a> | -<a href="../fr/mod/mod_dbd.html" hreflang="fr" rel="alternate" title="Français"> fr </a></p> -</div> -<table class="module"><tr><th><a href="module-dict.html#Description">Description:</a></th><td>Manages SQL database connections</td></tr> -<tr><th><a href="module-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="module-dict.html#ModuleIdentifier">Module Identifier:</a></th><td>dbd_module</td></tr> -<tr><th><a href="module-dict.html#SourceFile">Source File:</a></th><td>mod_dbd.c</td></tr></table> -<h3>Summary</h3> - - <p><code class="module"><a href="../mod/mod_dbd.html">mod_dbd</a></code> manages SQL database connections using - <a class="glossarylink" href="../glossary.html#apr" title="see glossary">APR</a>. It provides database connections on request - to modules requiring SQL database functions, and takes care of - managing databases with optimal efficiency and scalability - for both threaded and non-threaded MPMs. For details, see the - <a href="http://apr.apache.org/">APR</a> website and this overview of the - <a href="http://people.apache.org/~niq/dbd.html">Apache DBD Framework</a> - by its original developer. -</p> -</div> -<div id="quickview"><h3>Topics</h3> -<ul id="topics"> -<li><img alt="" src="../images/down.gif" /> <a href="#pooling">Connection Pooling</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#connecting">Connecting</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#API">Apache DBD API</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#prepared">SQL Prepared Statements</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#security">SECURITY WARNING</a></li> -</ul><h3 class="directives">Directives</h3> -<ul id="toc"> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdexptime">DBDExptime</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdinitsql">DBDInitSQL</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdkeep">DBDKeep</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdmax">DBDMax</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdmin">DBDMin</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdparams">DBDParams</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdpersist">DBDPersist</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdpreparesql">DBDPrepareSQL</a></li> -<li><img alt="" src="../images/down.gif" /> <a href="#dbdriver">DBDriver</a></li> -</ul> -<h3>Bugfix checklist</h3><ul class="seealso"><li><a href="https://www.apache.org/dist/httpd/CHANGES_2.4">httpd changelog</a></li><li><a href="https://bz.apache.org/bugzilla/buglist.cgi?bug_status=__open__&list_id=144532&product=Apache%20httpd-2&query_format=specific&order=changeddate%20DESC%2Cpriority%2Cbug_severity&component=mod_dbd">Known issues</a></li><li><a href="https://bz.apache.org/bugzilla/enter_bug.cgi?product=Apache%20httpd-2&component=mod_dbd">Report a bug</a></li></ul><h3>See also</h3> -<ul class="seealso"> -<li><a href="../misc/password_encryptions.html">Password Formats</a></li> -<li><a href="#comments_section">Comments</a></li></ul></div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="section"> -<h2><a name="pooling" id="pooling">Connection Pooling</a> <a title="Permanent link" href="#pooling" class="permalink">¶</a></h2> - <p>This module manages database connections, in a manner - optimised for the platform. On non-threaded platforms, - it provides a persistent connection in the manner of - classic LAMP (Linux, Apache, Mysql, Perl/PHP/Python). - On threaded platform, it provides an altogether more - scalable and efficient <em>connection pool</em>, as - described in <a href="http://www.apachetutor.org/dev/reslist">this - article at ApacheTutor</a>. Note that <code class="module"><a href="../mod/mod_dbd.html">mod_dbd</a></code> - supersedes the modules presented in that article.</p> -</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="section"> -<h2><a name="connecting" id="connecting">Connecting</a> <a title="Permanent link" href="#connecting" class="permalink">¶</a></h2> - - <p>To connect to your database, you'll need to specify - a driver, and connection parameters. These vary from - one database engine to another. For example, to connect - to mysql, do the following:</p> - -<pre class="prettyprint lang-config">DBDriver mysql -DBDParams host=localhost,dbname=pony,user=shetland,pass=appaloosa</pre> - - - <p>You can then use this connection in a variety of other - modules, including <code class="module"><a href="../mod/mod_rewrite.html">mod_rewrite</a></code>, - <code class="module"><a href="../mod/mod_authn_dbd.html">mod_authn_dbd</a></code>, and <code class="module"><a href="../mod/mod_lua.html">mod_lua</a></code>. - Further usage examples appear in each of those modules' - documentation.</p> - - <p>See <code class="directive"><a href="#dbdparams">DBDParams</a></code> for connection string - information for each of the supported database drivers.</p> - -</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="section"> -<h2><a name="API" id="API">Apache DBD API</a> <a title="Permanent link" href="#API" class="permalink">¶</a></h2> - <p><code class="module"><a href="../mod/mod_dbd.html">mod_dbd</a></code> exports five functions for other modules - to use. The API is as follows:</p> - -<pre class="prettyprint lang-c">typedef struct { - apr_dbd_t *handle; - apr_dbd_driver_t *driver; - apr_hash_t *prepared; -} ap_dbd_t; - -/* Export functions to access the database */ - -/* acquire a connection that MUST be explicitly closed. - * Returns NULL on error - */ -AP_DECLARE(ap_dbd_t*) ap_dbd_open(apr_pool_t*, server_rec*); - -/* release a connection acquired with ap_dbd_open */ -AP_DECLARE(void) ap_dbd_close(server_rec*, ap_dbd_t*); - -/* acquire a connection that will have the lifetime of a request - * and MUST NOT be explicitly closed. Return NULL on error. - * This is the preferred function for most applications. - */ -AP_DECLARE(ap_dbd_t*) ap_dbd_acquire(request_rec*); - -/* acquire a connection that will have the lifetime of a connection - * and MUST NOT be explicitly closed. Return NULL on error. - */ -AP_DECLARE(ap_dbd_t*) ap_dbd_cacquire(conn_rec*); - -/* Prepare a statement for use by a client module */ -AP_DECLARE(void) ap_dbd_prepare(server_rec*, const char*, const char*); - -/* Also export them as optional functions for modules that prefer it */ -APR_DECLARE_OPTIONAL_FN(ap_dbd_t*, ap_dbd_open, (apr_pool_t*, server_rec*)); -APR_DECLARE_OPTIONAL_FN(void, ap_dbd_close, (server_rec*, ap_dbd_t*)); -APR_DECLARE_OPTIONAL_FN(ap_dbd_t*, ap_dbd_acquire, (request_rec*)); -APR_DECLARE_OPTIONAL_FN(ap_dbd_t*, ap_dbd_cacquire, (conn_rec*)); -APR_DECLARE_OPTIONAL_FN(void, ap_dbd_prepare, (server_rec*, const char*, const char*));</pre> - -</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="section"> -<h2><a name="prepared" id="prepared">SQL Prepared Statements</a> <a title="Permanent link" href="#prepared" class="permalink">¶</a></h2> - <p><code class="module"><a href="../mod/mod_dbd.html">mod_dbd</a></code> supports SQL prepared statements on behalf - of modules that may wish to use them. Each prepared statement - must be assigned a name (label), and they are stored in a hash: - the <code>prepared</code> field of an <code>ap_dbd_t</code>. - Hash entries are of type <code>apr_dbd_prepared_t</code> - and can be used in any of the apr_dbd prepared statement - SQL query or select commands.</p> - - <p>It is up to dbd user modules to use the prepared statements - and document what statements can be specified in httpd.conf, - or to provide their own directives and use <code>ap_dbd_prepare</code>.</p> - - <div class="warning"><h3>Caveat</h3> - When using prepared statements with a MySQL database, it is preferred to set - <code>reconnect</code> to 0 in the connection string as to avoid errors that - arise from the MySQL client reconnecting without properly resetting the - prepared statements. If set to 1, any broken connections will be attempted - fixed, but as mod_dbd is not informed, the prepared statements will be invalidated. - </div> -</div><div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="section"> -<h2><a name="security" id="security">SECURITY WARNING</a> <a title="Permanent link" href="#security" class="permalink">¶</a></h2> - - <p>Any web/database application needs to secure itself against SQL - injection attacks. In most cases, Apache DBD is safe, because - applications use prepared statements, and untrusted inputs are - only ever used as data. Of course, if you use it via third-party - modules, you should ascertain what precautions they may require.</p> - <p>However, the <var>FreeTDS</var> driver is inherently - <strong>unsafe</strong>. The underlying library doesn't support - prepared statements, so the driver emulates them, and the - untrusted input is merged into the SQL statement.</p> - <p>It can be made safe by <em>untainting</em> all inputs: - a process inspired by Perl's taint checking. Each input - is matched against a regexp, and only the match is used, - according to the Perl idiom:</p> - <div class="example"><pre><code> $untrusted =~ /([a-z]+)/; - $trusted = $1;</code></pre></div> - <p>To use this, the untainting regexps must be included in the - prepared statements configured. The regexp follows immediately - after the % in the prepared statement, and is enclosed in - curly brackets {}. For example, if your application expects - alphanumeric input, you can use:</p> - <div class="example"><p><code> - <code>"SELECT foo FROM bar WHERE input = %s"</code> - </code></p></div> - <p>with other drivers, and suffer nothing worse than a failed query. - But with FreeTDS you'd need:</p> - <div class="example"><p><code> - <code>"SELECT foo FROM bar WHERE input = %{([A-Za-z0-9]+)}s"</code> - </code></p></div> - <p>Now anything that doesn't match the regexp's $1 match is - discarded, so the statement is safe.</p> - <p>An alternative to this may be the third-party ODBC driver, - which offers the security of genuine prepared statements.</p> -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDExptime" id="DBDExptime">DBDExptime</a> <a name="dbdexptime" id="dbdexptime">Directive</a> <a title="Permanent link" href="#dbdexptime" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Keepalive time for idle connections</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDExptime <var>time-in-seconds</var></code></td></tr> -<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DBDExptime 300</code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>Set the time to keep idle connections alive when the number - of connections specified in <code class="directive"><a href="#dbdkeep">DBDKeep</a></code> - has been exceeded (threaded platforms only).</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDInitSQL" id="DBDInitSQL">DBDInitSQL</a> <a name="dbdinitsql" id="dbdinitsql">Directive</a> <a title="Permanent link" href="#dbdinitsql" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Execute an SQL statement after connecting to a database</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDInitSQL <var>"SQL statement"</var></code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>Modules, that wish it, can have one or more SQL statements - executed when a connection to a database is created. Example - usage could be initializing certain values or adding a log - entry when a new connection is made to the database.</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDKeep" id="DBDKeep">DBDKeep</a> <a name="dbdkeep" id="dbdkeep">Directive</a> <a title="Permanent link" href="#dbdkeep" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maximum sustained number of connections</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDKeep <var>number</var></code></td></tr> -<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DBDKeep 2</code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>Set the maximum number of connections per process to be - sustained, other than for handling peak demand (threaded - platforms only).</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDMax" id="DBDMax">DBDMax</a> <a name="dbdmax" id="dbdmax">Directive</a> <a title="Permanent link" href="#dbdmax" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Maximum number of connections</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDMax <var>number</var></code></td></tr> -<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DBDMax 10</code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>Set the hard maximum number of connections per process - (threaded platforms only).</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDMin" id="DBDMin">DBDMin</a> <a name="dbdmin" id="dbdmin">Directive</a> <a title="Permanent link" href="#dbdmin" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Minimum number of connections</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDMin <var>number</var></code></td></tr> -<tr><th><a href="directive-dict.html#Default">Default:</a></th><td><code>DBDMin 1</code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>Set the minimum number of connections per process (threaded - platforms only).</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDParams" id="DBDParams">DBDParams</a> <a name="dbdparams" id="dbdparams">Directive</a> <a title="Permanent link" href="#dbdparams" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Parameters for database connection</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDParams -<var>param1</var>=<var>value1</var>[,<var>param2</var>=<var>value2</var>]</code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>As required by the underlying driver. Typically this will be - used to pass whatever cannot be defaulted amongst username, - password, database name, hostname and port number for connection.</p> - <p>Connection string parameters for current drivers include:</p> - <dl> - <dt>FreeTDS (for MSSQL and SyBase)</dt> - <dd>username, password, appname, dbname, host, charset, lang, server</dd> - <dt>MySQL</dt> - <dd>host, port, user, pass, dbname, sock, flags, fldsz, group, reconnect</dd> - <dt>Oracle</dt> - <dd>user, pass, dbname, server</dd> - <dt>PostgreSQL</dt> - <dd>The connection string is passed straight through to <code>PQconnectdb</code></dd> - <dt>SQLite2</dt> - <dd>The connection string is split on a colon, and <code>part1:part2</code> is used as <code>sqlite_open(part1, atoi(part2), NULL)</code></dd> - <dt>SQLite3</dt> - <dd>The connection string is passed straight through to <code>sqlite3_open</code></dd> - <dt>ODBC</dt> - <dd>datasource, user, password, connect, ctimeout, stimeout, access, txmode, bufsize</dd> - </dl> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDPersist" id="DBDPersist">DBDPersist</a> <a name="dbdpersist" id="dbdpersist">Directive</a> <a title="Permanent link" href="#dbdpersist" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Whether to use persistent connections</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDPersist On|Off</code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>If set to Off, persistent and pooled connections are disabled. - A new database connection is opened when requested by a client, - and closed immediately on release. This option is for debugging - and low-usage servers.</p> - - <p>The default is to enable a pool of persistent connections - (or a single LAMP-style persistent connection in the case of a - non-threaded server), and should almost always be used in operation.</p> - - <p>Prior to version 2.2.2, this directive accepted only the values - <code>0</code> and <code>1</code> instead of <code>Off</code> and - <code>On</code>, respectively.</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDPrepareSQL" id="DBDPrepareSQL">DBDPrepareSQL</a> <a name="dbdpreparesql" id="dbdpreparesql">Directive</a> <a title="Permanent link" href="#dbdpreparesql" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Define an SQL prepared statement</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDPrepareSQL <var>"SQL statement"</var> <var>label</var></code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>For modules such as authentication that repeatedly use a - single SQL statement, optimum performance is achieved by preparing - the statement at startup rather than every time it is used. - This directive prepares an SQL statement and assigns it a label.</p> - -</div> -<div class="top"><a href="#page-header"><img alt="top" src="../images/up.gif" /></a></div> -<div class="directive-section"><h2><a name="DBDriver" id="DBDriver">DBDriver</a> <a name="dbdriver" id="dbdriver">Directive</a> <a title="Permanent link" href="#dbdriver" class="permalink">¶</a></h2> -<table class="directive"> -<tr><th><a href="directive-dict.html#Description">Description:</a></th><td>Specify an SQL driver</td></tr> -<tr><th><a href="directive-dict.html#Syntax">Syntax:</a></th><td><code>DBDriver <var>name</var></code></td></tr> -<tr><th><a href="directive-dict.html#Context">Context:</a></th><td>server config, virtual host</td></tr> -<tr><th><a href="directive-dict.html#Status">Status:</a></th><td>Extension</td></tr> -<tr><th><a href="directive-dict.html#Module">Module:</a></th><td>mod_dbd</td></tr> -</table> - <p>Selects an apr_dbd driver by name. The driver must be installed - on your system (on most systems, it will be a shared object or dll). - For example, <code>DBDriver mysql</code> will select the MySQL - driver in apr_dbd_mysql.so.</p> - -</div> -</div> -<div class="bottomlang"> -<p><span>Available Languages: </span><a href="../en/mod/mod_dbd.html" title="English"> en </a> | -<a href="../fr/mod/mod_dbd.html" hreflang="fr" rel="alternate" title="Français"> fr </a></p> -</div><div class="top"><a href="#page-header"><img src="../images/up.gif" alt="top" /></a></div><div class="section"><h2><a id="comments_section" name="comments_section">Comments</a></h2><div class="warning"><strong>Notice:</strong><br />This is not a Q&A section. Comments placed here should be pointed towards suggestions on improving the documentation or server, and may be removed by our moderators if they are either implemented or considered invalid/off-topic. 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