SQL query OpenJson with deep nested arrays loop - sql

Question

I know there a lot of similar questions and answers here. I've read most of them but I'm unable to query nested arrays in a JSON structure. I'm lost in the CROSS APPLY's.
I'm actually querying a web API but for the sake of my question I've put it in a variable.
I'm trying to insert the ID (3519) and all the info of "worker_contracts" into a table.
declare #json nvarchar(max)
set #json = '
{
"data": [
{
"id": "3519",
"type": "affiliate_workers",
"attributes": {
"title": "mr",
"first_name": "John",
"last_name": "Doe",
"telephone": "[phone]",
"worker_contracts": [
{
"start_date": "2020-01-06",
"end_date": null,
"social_secretary_specific_data": {
"affiliate_id": 54,
"worker_details_id": 3378,
"start_date": "2020-01-06",
"end_date": null,
"affiliate_worker_id": 3519,
},
"work_hours_per_week": 25.0,
"comment": "",
"roster_week": [
{
"start_date": "2020-01-13",
"number_hours": 25
},
{
"start_date": "2020-01-06",
"number_hours": 25
}
],
"social_secretary_identifier": "123456"
},
{
"start_date": "2019-09-23",
"end_date": "2020-01-05",
"social_secretary_specific_data": {
"affiliate_id": 54,
"worker_details_id": 3378,
"start_date": "2019-09-23",
"end_date": "2020-01-05",
"affiliate_worker_id": 3519,
},
"work_hours_per_week": 21.0,
"comment": "",
"roster_week": [
{
"start_date": "2019-09-30",
"number_hours": 21
},
{
"start_date": "2019-09-23",
"number_hours": 21
}
],
"social_secretary_identifier": "123456"
}
],
"sodexo_reference": "56789",
"region": "Vlaanderen",
"identity_card_number": "A1122334455",
"can_work_with_animals": false
}
}
]
}
My SQL query only selects the start and end date values. I don't understand how I can add the other nested data.
insert into AffiliateWorkersContract_WRK
select WA.id, wc.*
from OpenJson((CAST(#json as nvarchar(max))),'$.data')
WITH (
id int,
worker_contracts nvarchar(max) as json
)
as WA
cross apply openjson (WA.worker_contracts)
with
(
start_date date '$.start_date',
end_date date '$.end_date',
) as WC
Thank you all for your help in advance.

Answer 1

Found the solution myself. I just had to keep going with the cross apply
insert into AffiliateWorkersContract_WRK
select WA.id, wawc.start_date, wawc.end_date, wawc.signing_date, wawc.contract_variability,
wawc.vehicle_type, wawc.addendum, wawc.work_hours_per_week,wawc.comment, wawc.social_secretary_identifier,
wssd.affiliate_id, wssd.worker_details_id, wssd.created_at, wssd.updated_at, wssd.affiliate_worker_id, wssd.comment, wssd.author_id,
wssd.parent_id, wssd.operating_headquarter_id, wssd.reference_period, wssd.varvar_ref_period_avg_minutes_per_week,
wssd.varvar_min_work_minutes_per_week, wssd.varvar_max_work_minutes_per_week
from OpenJson((CAST(#pootsy_AWWC_request as nvarchar(max))),'$.data')
WITH (
id int,
attributes nvarchar(max) as json
) as WA
cross apply openjson ((CAST(WA.attributes as nvarchar(max))))
WITH (
worker_contracts nvarchar(max) as json
) as WC
cross apply OpenJson ((CAST(WC.worker_contracts as nvarchar(max))))
WITH (
start_date date,
end_date date,
signing_date date,
contract_variability varchar(20),
vehicle_type varchar(20),
addendum varchar(10),
work_hours_per_week decimal(4,2),
comment nvarchar(max),
social_secretary_identifier int,
social_secretary_specific_data nvarchar(max) as json,
roster_week nvarchar(max) as json
) AS WAWC
cross apply OpenJson (WAWC.social_secretary_specific_data)
WITH (
affiliate_id int,
worker_details_id int,
created_at varchar(40),
updated_at varchar(40),
affiliate_worker_id int,
comment nvarchar(max),
author_id int,
parent_id int,
operating_headquarter_id int,
reference_period varchar(10),
varvar_ref_period_avg_minutes_per_week decimal(4,2),
varvar_min_work_minutes_per_week decimal(4,2),
varvar_max_work_minutes_per_week decimal(4,2)
) AS WSSD