MySQL视图以逗号分隔结果

Question

I am creating a view in MySQL Workbench:

Tables:

I want to create a view that will return records in such a way where, i get all rows from addressBook table & data field values separated by comma from addressBookData table.

How to do that?

My view is like this:

CREATE VIEW `addressBook_view` AS
SELECT
    `addressBook`.*,
    (SELECT `addressBookData`.`data` FROM `addressBookData` WHERE `addressBook_id` = `id` AND `type` = 'mobile') AS `mobile`,
    (SELECT `addressBookData`.`data` FROM `addressBookData` WHERE `addressBook_id` = `id` AND `type` = 'phone') AS `phone`,
    (SELECT `addressBookData`.`data` FROM `addressBookData` WHERE `addressBook_id` = `id` AND `type` = 'fax') AS `fax`
FROM
    `addressBook`

Answer 1

Try something like this:

SELECT ab.*, abd.type, GROUP_CONCAT(abd.data SEPARATOR ',')
FROM addressBook ab 
LEFT JOIN addressBookData abd ON ab.id = abd.addressBook_id
GROUP BY ab.id, abd.type

You can create view based on this query by yourself.

Answer 2

Ended up doing this:

CREATE VIEW `addressBook_view` AS
SELECT
    `addressBook`.*
    (SELECT GROUP_CONCAT(`data`) FROM `addressBookData` WHERE `addressBook_id` = `addressBook`.`id` AND `type` = 'mobile' GROUP BY `id`) AS `mobile`,
    (SELECT GROUP_CONCAT(`data`) FROM `addressBookData` WHERE `addressBook_id` = `addressBook`.`id` AND `type` = 'phone' GROUP BY `id`) AS `phone`,
    (SELECT GROUP_CONCAT(`data`) FROM `addressBookData` WHERE `addressBook_id` = `addressBook`.`id` AND `type` = 'fax' GROUP BY `id`) AS `fax`
FROM
    `addressBook`