mysql搜索多表多字段模糊查询

select parttime_job_business_assessments.*, u.nick_name, u.mobile, pj.name as job_name, b.name as business_name from `parttime_job_business_assessments` 
	left join `users` as `u` on `u`.`id` = `parttime_job_business_assessments`.`user_id` 
	left join `parttime_jobs` as `pj` on `pj`.`id` = `parttime_job_business_assessments`.`job_id` 
	left join `businesses` as `b` on `b`.`id` = `parttime_job_business_assessments`.`business_id` 
where 1 = 1 
	AND concat(pj.`name`, u.`nick_name`,u.`mobile`,b.`name`) LIKE "%郝%" 
order by `parttime_job_business_assessments`.`sort_id` desc 
limit 10 offset 0

当搜索某一关键词的时候，要查询多个表的字段是否包含该关键字，这个时候可以使用：

concat(表1.字段1, 表二.字段二......) LIKE "%关键词%" 

上例为查询“郝“关键词，可以是users表的nick_name和mobile字段，也可以是parttime_jobs表的name字段，同时还可以是businesses的name字段