sql - How create json format with group-concat mysql?

Question

How create json format with group-concat mysql?

(I use MySQL)

Example1:

table1:

email            |    name  |   phone
-------------------------------------
[email protected]    | Ben      | 6555333
[email protected]    | Tom      | 2322452
[email protected]    | Dan      | 8768768
[email protected]    | Joi      | 3434356

like syntax code that not give me the format:

select email, group-concat(name,phone) as list from table1 
group by email

output that I need:

email         |    list
------------------------------------------------
[email protected] |  {name:"Ben",phone:"6555333"},{name:"Joi",phone:"3434356"}
[email protected] |  {name:"Tom",phone:"2322452"},{name:"Dan",phone:"8768768"}

Thanks

Answer 1

With the newer versions of MySQL, you can use JSON_OBJECT function to achieve the desired result, like so:

GROUP_CONCAT(
  JSON_OBJECT(
    'name', name,
    'phone', phone
  )
) AS list

To get the SQL response ready to be parsed as an array:

CONCAT(
  '[',
  GROUP_CONCAT(
    JSON_OBJECT(
      'name', name,
      'phone', phone
    )
  ),
  ']'
) AS list

This will give you a string like: [{name: 'ABC', phone: '111'}, {name: 'DEF', phone: '222'}] which can be JSON parsed. Hope this helps.