搞代码

mysql使用自定义方法，以及cakephp分页使用join查询的方法

第一步：设置SET GLOBAL log_bin_trust_function_creators=TRUE;
如果报ERROR 1418 (HY000): This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)这种错误

第二步：

DELIMITER $$  USE `zhiku`$$  DROP FUNCTION IF EXISTS `getChildDept`$$  CREATE  FUNCTION `getChildDept`(rootId INT) RETURNS TEXT CHARSET utf8 BEGIN  DECLARE sTemp VARCHAR(1000);  DECLARE sTempChd VARCHAR(1000);  SET sTemp = '$';  SET sTempChd =CAST(rootId AS CHAR);  WHILE sTempChd IS NOT NULL DO   SET sTemp = CONCAT(sTemp,',',sTempChd);   SELECT GROUP_CONCAT(id) INTO sTempChd FROM zk_departments WHERE FIND_IN_SET(parent_id,sTempChd)>0;  END WHILE;  RETURN sTemp;     END$$ DELIMITER ; 

欢迎大家阅读《Mysql应用自定义方法，以及cakephp分页使用join查询的方法》,跪求各位点评，by 搞代码

第三步：直接调用
SELECT DISTINCT(d.user_id) AS user_id,d.dept_id,u.compellation FROM zk_user_departments d INNER JOIN zk_users u ON u.id=d.user_id  AND  INSTR(u.pinyin,'h')=2 WHERE FIND_IN_SET(d.dept_id, getChildDept(128)) GROUP BY d.user_id;

放在cakephp为:

$conditions = array('FIND_IN_SET(dept_id, getChildDept('.$dept_id.'))');    $condition_join = '`User`.`id` = `UserDepartment`.`user_id`';          if(!empty($c))$condition_join  .= ' AND INSTR(User.pinyin,"'.$c.'")=2';          //分页    $this->paginate = array(                  'UserDepartment' => array(                          'conditions' => $conditions,                           'order'      => array('dept_id'=>'ASC'),                           'limit'      => 10,                          'recursive'  => -1,              'group'   => array('user_id'),              'fields'     => array('user_id','dept_id'),        'joins'      => array(array(              'alias' => 'User',                       'table' => 'zk_users',                       'type' => 'INNER',              'conditions' => $condition_join,            )),                  )          );          $data = $this->paginate('UserDepartment');

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