updated docs

Author: tada5hi

user_guide_src/source/database/query_builder.rst

@@ -622,6 +622,22 @@ The first parameter is an object.
 
 .. note:: All values are escaped automatically producing safer queries.
 
+**$builder->ignore()**
+
+Generates an insert ignore string based on the data you supply, and runs the
+query. So if an entry with the same primary key already exists, the query won't be inserted.
+You can optionally pass an **boolean** to the function. Here is an example using the array of the above example::
+
+	$data = [
+		'title' => 'My title',
+		'name'  => 'My Name',
+		'date'  => 'My date'
+	];
+
+	$builder->ignore(true)->insert($data);
+	// Produces: INSERT OR IGNORE INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date')
+
+
 **$builder->getCompiledInsert()**
 
 Compiles the insertion query just like $builder->insert() but does not