node.jssequelize.jssequelize-cli

Query Postgres Nested JSONB column using sequelize


Hi I have a table where I use JSONB to store Nested JSON data and need to query this JSONB column Below is the structure of the table

 {
          "id": "5810f6b3-fefb-4eb1-befc-7df11a24d997",
          "entity": "LocationTypes",
          "event_name": "LocationTypes added",
          "data": {
            "event":{
            "id": "b2805163-78f0-4384-bad6-1df8d35b456d",
            "name": "builidng",
            "company_id": "1dd83f77-fdf1-496d-9e0b-f502788c3a7b",
            "is_address_applicable": true,
            "is_location_map_applicable": true}
          },
          "notes": null,
          "event_time": "2020-11-05T10:56:34.909Z",
          "company_id": "1dd83f77-fdf1-496d-9e0b-f502788c3a7b",
          "created_at": "2020-11-05T10:56:34.909Z",
          "updated_at": "2020-11-05T10:56:34.909Z"
        }

The code below is giving blank array as response


    const dataJson = await database.activity_logs.findAll({
          where: {
            'data.event.id': {
              $eq: 'b2805163-78f0-4384-bad6-1df8d35b456d',
            },
          },
          raw: true,
        });

Is there any way I can accomplish querying nested json object using sequelize in a better way .


Solution

  • You should try sequelize.literal with JSON-operators/functions wrapped into sequelize.where. Something like this:

    sequelize.where(sequelize.literal("data->'event'->'id'"), '=', 'b2805163-78f0-4384-bad6-1df8d35b456d')
    

    more recent syntax (not sure from what Sequelize version it starts to work) to construct conditions against JSON:

    {
      data: {
        event: {
         id: 'b2805163-78f0-4384-bad6-1df8d35b456d'
        }
      }
    }