嵌套的where条件允许我们在查询中使用多个where子句,并通过逻辑运算符(如AND和OR)将它们组合起来。 以下是使用CodeIgniter的嵌套where条件的示例代码: 代码语言:txt 复制 $this->db->select('*'); $this->db->from('my_table'); $this->db->where('column1', 'value1'); $this->db->group_start();...
正如@M Khalid Junaid所指出的，Codeigniter的活动记录库不支持分组的where子句。您可以在防止Codeigniter...
() ->group_start() ->or_like($this->withLike) ->group_end(); } $this->getDatabaseRead() // 排序 ->order_by($this->withOrder) // 分组 ->group_by($this->withGroup) // 条数 ->limit($limit) // 偏移量 ->offset($offset); return $this; } /** * 设置 写入 生成器 * *...
主要涉及三个文件,数据库配置文件(数据库能否连接成功的关键),Db.php实例化数据库类(里面有连接到数据库是否成功的逻辑判断),DB.driver.php里面这是连接数据库的相关操作;重连,关闭连接等等如果涉及到自动连接还可以加一个文件 application/config/autoload.php。具体见:源码或者相关网站http://codeigniter.org.cn/use...
group_start() Returns: CI_DB_query_builder instance (method chaining) Return type: CI_DB_query_builder Starts a group expression, using ANDs for the conditions inside it. or_group_start() Returns: CI_DB_query_builder instance (method chaining) Return type: CI_DB_query_builder Starts a gro...
orNotGroupStart() Returns: BaseBuilder instance (method chaining) Return type: BaseBuilder Starts a group expression, using OR NOT for the conditions inside it. groupEnd() Returns: BaseBuilder instance (method chaining) Return type: BaseBuilder Ends a group expression. like($field[...
this->db->insert();$this->db->update();$this->db->delete();$this->db->select('title')->from('mytable')->where('id',$id)->limit(10, 20);$query=$this->db->get();$this->db->start_cache();$this->db->select('field1');$this->db->stop_cache();$this->db->get('...
//GROUP BY title, date $this->db->group_by(array("title", "date")); //ORDER BY title DESC $this->db->order_by("title", "desc"); //ORDER BY title DESC, name ASC $this->db->order_by('title desc, name asc'); //ORDER BY title DESC, name ASC ...
groupStart() refactorization #2270 (michalsn) testMode() method for BaseBuilder #2269 (michalsn) Validation session use only if exists #2268 (jim-parry) Tests setUp and tearDown: void #2267 (MGatner) RC.2 release prep #2266 (jim-parry) Fix a validation issue on multiple file upload #...
('zhaopin', $per_page, $start); return $query->result_array(); } else { $query = $this->db->get_where('zhaopin', array('id' => $id)); return $query->row_array(); } } //搜索带分页 public function search($search_type, $search_content, $per_page = 20, $start = 0) {...