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-rw-r--r--user_guide_src/source/database/active_record.rst10
-rw-r--r--user_guide_src/source/database/helpers.rst6
-rw-r--r--user_guide_src/source/database/queries.rst17
-rw-r--r--user_guide_src/source/database/results.rst9
-rw-r--r--user_guide_src/source/database/utilities.rst6
5 files changed, 37 insertions, 11 deletions
diff --git a/user_guide_src/source/database/active_record.rst b/user_guide_src/source/database/active_record.rst
index c04e67d2a..e328c11e2 100644
--- a/user_guide_src/source/database/active_record.rst
+++ b/user_guide_src/source/database/active_record.rst
@@ -68,7 +68,7 @@ Example::
// Produces string: SELECT * FROM mytable
The second parameter enables you to set whether or not the active record query
-will be reset (by default it will be—just like `$this->db->get()`)::
+will be reset (by default it will be just like `$this->db->get()`)::
echo $this->db->limit(10,20)->get_compiled_select('mytable', FALSE);
// Produces string: SELECT * FROM mytable LIMIT 20, 10
@@ -533,7 +533,7 @@ Query grouping
**************
Query grouping allows you to create groups of WHERE clauses by enclosing them in parentheses. This will allow
-you to create queries with complex WHERE clauses. Nested groups are supported. Example:
+you to create queries with complex WHERE clauses. Nested groups are supported. Example::
$this->db->select('*')->from('my_table')
->group_start()
@@ -921,9 +921,9 @@ Method chaining allows you to simplify your syntax by connecting
multiple functions. Consider this example::
$query = $this->db->select('title')
- ->where('id', $id)
- ->limit(10, 20)
- ->get('mytable');
+ ->where('id', $id)
+ ->limit(10, 20)
+ ->get('mytable');
.. _ar-caching:
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