具有视图形成的Mysql查询？

我在db中有名称为的表

查询，查询\类别，联系人，类别

我做了一个视图来连接这两个表。但对于一个查询，可以有多个类别。所以在我看来，每个类别的查询记录都是重复的。但我想做一个视图，显示查询一次和类别列应该用逗号分隔多个类别

以前我的观点是这样的

select
  `i`.`id` AS `id`,
  `i`.`comment` AS `comment`,
  `i`.`doi` AS `doi`,
  `i`.`employee_id` AS `employee_id`,
  `i`.`bid` AS `inq_bid`,`i`.`park` AS `park`,
  `cat`.`category` AS `category`,
  `c`.`id` AS `cont_id`,
  `c`.`fname` AS `fname`,
  `c`.`lname` AS `lname`,
  concat(`c`.`fname`,' ',`c`.`lname`,' ',`c`.`mname`) AS `fullname`,
  `c`.`mobile` AS `mobile`,
  `c`.`mobile2` AS `mobile2`,
  `c`.`phone_no` AS `phone_no`,
  `c`.`email` AS `email`,
  `c`.`gender` AS `gender`,
  `c`.`image` AS `image`,
  `c`.`dob` AS `dob`,
  `c`.`parent_id` AS `parent_id`,
  `c`.`relation` AS `relation`,
  `c`.`address` AS `address`,
  `c`.`pincode` AS `pincode`,
  `c`.`city` AS `city`,
  `c`.`park` AS `cont_park`,
  `cg`.`contact_group` AS `contact_group`
from ((((`pf_Papafit_9510`.`contact` `c`
join `pf_Papafit_9510`.`contact_group` `cg`)
join `pf_Papafit_9510`.`category` `cat`)
join `pf_Papafit_9510`.`inquiry` `i`)
join `pf_Papafit_9510`.`inquiry_category` `ic`)
where
  ((`cg`.`id` = `c`.`contact_group_id`)
  and (`c`.`id` = `i`.`contact_id`)
  and (`i`.`id` = `ic`.`inquiry_id`)
  and (`ic`.`category_id` = `cat`.`id`))

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您的问题与PHP有什么关系？还有，你的问题到底是什么？请在@C0dekidUse GROUP_CONCAT上方阅读需要逗号分隔的列，并添加一个适当的GROUP BY子句。非常感谢@sloarchasher