Mysql使用自定义方法以及cakephp分页使用join查询的方法_MySQL

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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：

Sql代码

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 ;

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:

Php代码

$conditions = array('FIND_IN_SET(dept_id, getChildDept('.$dept_id.'))');

$condition_join = '`User`.`id` = `UserDepartment`.`user_id`';

if(!emptyempty($c))$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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