Query for nested JSON property in azure CosmosDb - json

Question

I am having some difficulty crafting a query for nested data in cosmosDB.
Say I have data stored in this structure:
{
id:"1234",
data:{
people:{
"a826bbc5-add9-42d8-ba52-f5de52973556":{
first_name: "Kyle"
},
"efb119d-9f12-4d11-a7e1-38e4719a699c":{
first_name: "Bob"
},
"b402faac-d1ba-4317-9ba6-673c76a8fc37":{
first_name: "Jane"
}
}
}
}
Now I want to write a query that would return all of the people with the first name of "Bob"
I need something like:
Select * from c where c.data.people[*].first_name = "Bob";
Notice that the "people" object is an actual JSON object not a JSON array, so no array_contains, I need basically the JSON obj equivalent.
I've looked around and can't seem to find the appropriate query for this common use-case.
Anyone know how I can accomplish this query?

Answer 1

Since the key of people objects is random,i'm afraid you can't query it with normal sql.I tried to implement your needs with UDF in cosmos db.
Udf code:
function userDefinedFunction(peopleObj){
var returnArray = [];
for(var key in peopleObj){
if (peopleObj[key].first_name == "Bob"){
var map = {};
map[key] = peopleObj[key];
returnArray.push(map);
}
}
return returnArray;
}
Sql:
SELECT udf.test(c.data.people) as BobPeople FROM c
Sample data:
Output:

Answer 2

Marked Jay's answer as the accepted answer as I ended up using udfs - I'll post the function I ended up using and the query for anyone looking for something a little more generic.
function userDefinedFunction(properties, fieldName, filedValue){
for(var k in properties){
if(properties[k][fieldName] && properties[k][fieldName] == filedValue)
return true;
}
return false;
}
with a query of:
select * from c where udf.hasValue(c.data.people,"first_name","Bob")