src/Titon/Db/Query/ExprAware.php
public static function expr($field, $operator = null, $value = null) {
        return new Expr($field, $operator, $value);
    }
public static function expr($field, $operator = null, $value = null) {
        return new Expr($field, $operator, $value);
    }
public static function expr ( $ field , $ operator = null , $ value = null ) { return new Expr ( $ field , $ operator , $ value ) ; }
Instantiate a new database expression.

@param string $field
@param string $operator
@param mixed $value
@return \Titon\Db\Query\Expr
Instantiate a new database expression .