Merge upstream branch

6 files changed, 42 insertions, 6 deletions

diff --git a/user_guide_src/source/database/configuration.rst b/user_guide_src/source/database/configuration.rst
index 4f88c25ab..040e7e33f 100644
--- a/user_guide_src/source/database/configuration.rst
+++ b/user_guide_src/source/database/configuration.rst
@@ -28,6 +28,10 @@ prototype::
 	$db['default']['autoinit'] = TRUE;
 	$db['default']['stricton'] = FALSE;
 
+If you use PDO as your dbdriver, you can specify the full DSN string describe a connection to the database like this::
+
+	$db['default']['dsn'] = 'pgsql:host=localhost;port=5432;dbname=database_name';
+
 You can also specify failovers for the situation when the main connection cannot connect for some reason.
 These failovers can be specified by setting the failover for a connection like this::
 
diff --git a/user_guide_src/source/database/connecting.rst b/user_guide_src/source/database/connecting.rst
index a834cc0f7..fb4524116 100644
--- a/user_guide_src/source/database/connecting.rst
+++ b/user_guide_src/source/database/connecting.rst
@@ -122,6 +122,12 @@ return the database object.
 	| $DB1->result();
 	| etc...
 
+.. note:: You don't need to create separate database configurations if you
+	only need to use a different database on the same connection. You
+	can switch to a different database when you need to, like this:
+
+	| $this->db->db_select($database2_name);
+
 Reconnecting / Keeping the Connection Alive
 ===========================================
 
diff --git a/user_guide_src/source/database/helpers.rst b/user_guide_src/source/database/helpers.rst
index 7ea19e9f6..e8a5ac801 100644
--- a/user_guide_src/source/database/helpers.rst
+++ b/user_guide_src/source/database/helpers.rst
@@ -7,9 +7,9 @@ $this->db->insert_id()
 
 The insert ID number when performing database inserts.
 
-.. note:: If using the PDO driver with PostgreSQL, this function requires
-	a $name parameter, which specifies the appropriate sequence to check
-	for the insert id.
+.. note:: If using the PDO driver with PostgreSQL, or using the Interbase
+	driver, this function requires a $name parameter, which specifies the 
+	appropriate sequence to check for the insert id.
 
 $this->db->affected_rows()
 ===========================
diff --git a/user_guide_src/source/database/queries.rst b/user_guide_src/source/database/queries.rst
index 971d5d61d..15a73614a 100644
--- a/user_guide_src/source/database/queries.rst
+++ b/user_guide_src/source/database/queries.rst
@@ -112,3 +112,20 @@ The secondary benefit of using binds is that the values are
 automatically escaped, producing safer queries. You don't have to
 remember to manually escape data; the engine does it automatically for
 you.
+
+***************
+Handling Errors
+***************
+
+$this->db->error();
+===================
+
+If you need to get the last error that has occured, the error() method
+will return an array containing its code and message. Here's a quick
+example::
+
+	if ( ! $this->db->simple_query('SELECT `example_field` FROM `example_table`'))
+	{
+		$error = $this->db->error(); // Has keys 'code' and 'message'
+	}
+
diff --git a/user_guide_src/source/database/results.rst b/user_guide_src/source/database/results.rst
index 4f93c794d..865345762 100644
--- a/user_guide_src/source/database/results.rst
+++ b/user_guide_src/source/database/results.rst
@@ -150,6 +150,12 @@ is the variable that the query result object is assigned to::
 	
 	echo $query->num_rows();
 
+.. note::
+	Not all database drivers have a native way of getting the total
+	number of rows for a result set. When this is the case, all of
+	the data is prefetched and count() is manually called on the
+	resulting array in order to achieve the same functionality.
+	
 $query->num_fields()
 =====================
 
@@ -182,5 +188,4 @@ Example::
 
 	$row = $query2->row();
 	echo $row->name;
-	$query2->free_result();// The $query2 result object will no longer be available
-
+	$query2->free_result(); // The $query2 result object will no longer be available
diff --git a/user_guide_src/source/database/utilities.rst b/user_guide_src/source/database/utilities.rst
index b0920109f..3805ffb87 100644
--- a/user_guide_src/source/database/utilities.rst
+++ b/user_guide_src/source/database/utilities.rst
@@ -161,7 +161,11 @@ $this->dbutil->backup()
 Permits you to backup your full database or individual tables. The
 backup data can be compressed in either Zip or Gzip format.
 
-.. note:: This features is only available for MySQL databases.
+.. note:: This features is only available for MySQL and Interbase/Firebird databases.
+
+.. note:: For Interbase/Firebird databases, the backup file name is the only parameter.
+	
+		Eg. $this->dbutil->backup('db_backup_filename');
 
 .. note:: Due to the limited execution time and memory available to PHP,
 	backing up very large databases may not be possible. If your database is