How to do PostgreSQL '||' operator with knex.update - postgresql

Question

I am working with the following data in table my_table:
[
{
"item": {
"id": 1,
"data": {
"name": "ABC",
"status": "Active"
}
}
},
{
"item": {
"id": 2,
"data": {
"name": "DEF",
"status": "Active"
}
}
}
]
I would like to update name property of data, keeping the rest of data intact. A PostgreSQL query for that purpose would look like this:
UPDATE my_table SET data = data || '{"name":"GHI"}' WHERE id = 1;
However, I am struggling to achieve this with knex, as I've tried:
knex('my_table')
.update({ data: knex.raw('data || ?', [{ name: 'GHI' }]) })
.where('id', 1);
and many other similar queries, but in vain. If you might have any ideas about this, please share them below. Thanks in advance!

Answer 1

Using knex you indeed have to use raw expressions to update single field inside JSONB column.
However in objection.js which is an ORM, built on top of knex, there are some additional support for JSONB operations.
With objection.js your update would look like
await MyTableModel.query(knex).update({'data:name', 'GHI'}).where('id', 1);
Which outputs SQL like this (with bindings ["GHI", 1]):
update "my_table" set "data" = jsonb_set("data", '{name}', ?, true) where "id" = ?
Runkit example https://runkit.com/embed/0dai0bybplxv