mysql 多行合并一行

SELECT
	`w`.`id` AS `id`,
	`w`.`phone` AS `phone`,
	`w`.`belong_id` AS `belong_id`,
	`w`.`name` AS `name`,
	`w`.`password` AS `password`,
	`w`.`email` AS `email`,
	`w`.`qq` AS `qq`,
	`w`.`status_id` AS `status_id`,
	`w`.`level_id` AS `level_id`,
	`w`.`created_time` AS `created_time`,
	`l`.`name` AS `lname`,
	`s`.`status_name` AS `status_name`,
	group_concat(
		DISTINCT cast(
			`p`.`profession_code` AS CHAR charset utf8
		) SEPARATOR ','
	) AS `profession_code`,
	group_concat(
		DISTINCT `p`.`profession_name` SEPARATOR ','
	) AS `profession_name`,
	group_concat(
		DISTINCT `r`.`city_code` SEPARATOR ','
	) AS `city_code`,
	group_concat(
		DISTINCT `r`.`city_name` SEPARATOR ','
	) AS `city_name`,
	group_concat(
		DISTINCT `r`.`county_code` SEPARATOR ','
	) AS `county_code`,
	group_concat(
		DISTINCT `r`.`county_name` SEPARATOR ','
	) AS `county_name`,
	group_concat(
		DISTINCT `r`.`province_code` SEPARATOR ','
	) AS `province_code`,
	group_concat(
		DISTINCT `r`.`province_name` SEPARATOR ','
	) AS `province_name`
FROM
	`worker` `w`
LEFT JOIN `worker_level` `l` ON `w`.`level_id` = `l`.`id`
LEFT JOIN `worker_status` `s` ON `w`.`status_id` = `s`.`status_id`
LEFT JOIN `worker_profession` `p` ON `w`.`id` = `p`.`worker_id`
LEFT JOIN `worker_region` `r` ON `w`.`id` = `r`.`worker_id`
GROUP BY
	`w`.`id`

　　GROUP_CONCAT函数返回一个字符串结果，该结果由分组中的值连接组合而成。

　　distinct来返回去除重复的值

　SEPARATOR定义分隔符,GROUP_CONCAT()函数默认是以逗号符号分割

　　AS 重命名

结果:
洁具,灯具

33,22

潍坊市,开封市

333,222

安丘市,小开市

3,2 山东省