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+<h1>Queries</h1>
+
+<h2>$this->db->query();</h2>
+
+<p>To submit a query, use the following function:</p>
+
+<code>$this->db->query('YOUR QUERY HERE');</code>
+
+<p>The <dfn>query()</dfn> function returns a database result <strong>object</strong> when "read" type queries are run,
+which you can use to <a href="results.html">show your results</a>. When "write" type queries are run it simply returns TRUE or FALSE
+depending on success or failure. When retrieving data you will typically assign the query to your own variable, like this:</p>
+
+<code><var>$query</var> = $this->db->query('YOUR QUERY HERE');</code>
+
+<h2>$this->db->simple_query();</h2>
+
+<p>This is a simplified version of the <dfn>$this->db->query()</dfn> function. It ONLY returns TRUE/FALSE on success or failure.
+It DOES NOT return a database result set, nor does it set the query timer, or compile bind data, or store your query for debugging.
+It simply lets you submit a query. Most users will rarely use this function.</p>
+
+
+<h1>Adding Database prefixes manually</h1>
+<p>If you have configured a database prefix and would like to add it in manually for, you can use the following.</p>
+<p><code>$this->db->dbprefix('tablename');<br />
+// outputs prefix_tablename</code></p>
+
+
+<h1>Protecting identifiers</h1>
+<p>In many databases it is advisable to protect table and field names - for example with backticks in MySQL. <strong>Active Record queries are automatically protected</strong>, however if you need to manually protect an identifier you can use:</p>
+<p><code>$this->db->protect_identifiers('table_name');</code></p>
+
+<p>This function will also add a table prefix to your table, assuming you have a prefix specified in your database config file. To enable the prefixing set <kbd>TRUE</kbd> (boolen) via the second parameter:</p>
+<p><code>$this->db->protect_identifiers('table_name', <kbd>TRUE</kbd>);</code></p>
+
+
+<h1>Escaping Queries</h1>
+<p>It's a very good security practice to escape your data before submitting it into your database.
+CodeIgniter has three methods that help you do this:</p>
+
+<ol>
+<li><strong>$this->db->escape()</strong> This function determines the data type so that it
+can escape only string data. It also automatically adds single quotes around the data so you don't have to:
+
+<code>$sql = "INSERT INTO table (title) VALUES(".$this->db->escape($title).")";</code></li>
+
+<li><strong>$this->db->escape_str()</strong> This function escapes the data passed to it, regardless of type.
+Most of the time you'll use the above function rather than this one. Use the function like this:
+
+<code>$sql = "INSERT INTO table (title) VALUES('".$this->db->escape_str($title)."')";</code></li>
+
+<li><strong>$this->db->escape_like_str()</strong> This method should be used when strings are to be used in LIKE
+conditions so that LIKE wildcards ('%', '_') in the string are also properly escaped.
+
+<code>$search = '20% raise';<br />
+$sql = "SELECT id FROM table WHERE column LIKE '%".$this->db->escape_like_str($search)."%'";</code></li>
+
+</ol>
+
+
+<h1>Query Bindings</h1>
+
+
+<p>Bindings enable you to simplify your query syntax by letting the system put the queries together for you. Consider the following example:</p>
+
+<code>
+$sql = "SELECT * FROM some_table WHERE id = <var>?</var> AND status = <var>?</var> AND author = <var>?</var>";
+<br /><br />
+$this->db->query($sql, array(3, 'live', 'Rick'));
+</code>
+
+<p>The question marks in the query are automatically replaced with the values in the array in the second parameter of the query function.</p>
+<p class="important">The secondary benefit of using binds is that the values are automatically escaped, producing safer queries. You don't have to remember to manually escape data; the engine does it automatically for you.</p>
+
+
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