Read JSON data from sql server and convert to row and column - sql-server

Question

{
"product": "car",
"fuel": {
"Maruti": {
"Model": {
"LXI": [
{
"Price": "700000"
}
],
"VXI": [
{
"Price": "800000"
}
],
"ZXI": [
{
"Price": "900000"
}
]
}
}
}
}
}
i have this JSON stored in SQL table and need t fetch it from CarDetails Table
table structure is as below:
ID
JSONData(this col has JSON stored)
CreatedDate
there can be more models as well like 10 or 20 or 1000....... I need all different prices for this in SQL Server. Can anyone assist
I need this data as:
700000
800000
900000
can anyone help me out in this.
I tried cross apply but it did not helped.

Answer 1

Having the model names as property keys complicates things slightly, but it's still possible to extract this data with multiple cross applies of the OPENJSON() function, e.g.:
declare #demo table (
ID int,
JSONData nvarchar(max)
);
insert #demo (ID, JSONData) values (47, N'{
"product": "car",
"fuel": {
"Maruti": {
"Model": {
"LXI": [
{
"Price": "700000"
}
],
"VXI": [
{
"Price": "800000"
}
],
"ZXI": [
{
"Price": "900000"
}
]
}
}
}
}
}');
select ID, J.product, K.[key] as [Model], L.Price
from #demo
cross apply openjson(JSONData) with (
product nvarchar(50),
ModelJSON nvarchar(max) '$.fuel.Maruti.Model' as JSON
) J
cross apply openjson(J.ModelJSON) K -- default columns: [key],[value],[type]
cross apply openjson(K.[value]) with (
Price nvarchar(10)
) L;
Which yields the results:
ID
product
Model
Price
47
car
LXI
700000
47
car
VXI
800000
47
car
ZXI
900000