O Guia Definitivo do Yii 1.1

also use the following code to escape the special characters to prevent them from being
treated as wildcards:
$keyword=$_GET['q'];
// escape % and _ characters
$keyword=strtr($keyword, array('%'=>'\%', '_'=>'\_'));
$command->where(array('like', 'title', '%'.$keyword.'%'));
order
function order($columns)
The order method specifies the ORDER BY part of a query. The $columns parameter
specifies the columns to be ordered by, which can be either a string representing commaseparated
columns and order directions (ASC or DESC), or an array of columns and order
directions. Column names can contain table prefixes. The method will automatically quote
the column names unless a column contains some parenthesis (which means the column
is given as a DB expression).
Below are some examples:
// ORDER BY `name`, `id` DESC
order('name, id desc')
// ORDER BY `tbl_profile`.`name`, `id` DESC
order(array('tbl_profile.name', 'id desc')
limit and offset
function limit($limit, $offset=null)
function offset($offset)
The limit and offset methods specify the LIMIT and OFFSET part of a query. Note that
some DBMS may not support LIMIT and OFFSET syntax. In this case, the Query Builder
will rewrite the whole SQL statement to simulate the function of limit and offset.
Below are some examples:
// LIMIT 10
limit(10)
// LIMIT 10 OFFSET 20
limit(10, 20)
// OFFSET 20
offset(20)