如何在json列中查询包含给定元素的行Laravel Postgres

Question

Hello all I have a postgresql table that has a json column called agents. See below

SELECT agents FROM cnms_rosters;

result

      agents      
------------------
 [1,13,3,16,15]
 [12,13,14,15,15]
 [11,73,55,16,44]
(3 rows)

This column contains the id of an agent. What I want to do is to query the row or rows that has the specific agent id.

How can I achieve that?

I am currently using Laravel Framework is there any eloquent approach in querying the data? if not how to query it using DB::raw or other query builder.

Answer 1

You can use regex searching from the model:

CnmsRoster::where('agents', '~', "/[^0-9]{$agent_id}[^0-9]/")

The [^0-9] is intended to match either a square bracket or a comma. This lets you look inside the string for the numeric agent id you want sandwiched between control characters.

Answer 2

sql query would be using @> operator, eg:

t=# with cnms_rosters(agents) as (values('[1,13,3,16,15]'::jsonb),('[12,13,14,15,15]'),('[11,73,55,16,44]'))
select agents FROM cnms_rosters where agents @> '[13]'::jsonb;
        agents
----------------------
 [1, 13, 3, 16, 15]
 [12, 13, 14, 15, 15]
(2 rows)

or

t=# with cnms_rosters(agents) as (values('[1,13,3,16,15]'::jsonb),('[12,13,14,15,15]'),('[11,73,55,16,44]'))
select agents FROM cnms_rosters where agents @> '[16]'::jsonb;
        agents
----------------------
 [1, 13, 3, 16, 15]
 [11, 73, 55, 16, 44]
(2 rows)

and same for array:

t=# with cnms_rosters(agents) as (values(array[1,13,3,16,15]),(array[12,13,14,15,15]),(array[11,73,55,16,44]))
select agents FROM cnms_rosters where agents @> array[13];
      agents
------------------
 {1,13,3,16,15}
 {12,13,14,15,15}
(2 rows)

or

t=# with cnms_rosters(agents) as (values(array[1,13,3,16,15]),(array[12,13,14,15,15]),(array[11,73,55,16,44]))
select agents FROM cnms_rosters where agents @> array[16];
      agents
------------------
 {1,13,3,16,15}
 {11,73,55,16,44}
(2 rows)