How do I access the VALUE using CosmosQueryableExtensions - entity-framework-core

Question

EFCore Cosmos provider does not implement subquery yet and so I have implemented the query using the following FromRawSql as per this post:
SqlParameter userMasterGuidParam = new("userMasterGuid", userMasterGuid);
SqlParameter statusNewParam = new("statusNew", CaseStatusGuids.New);
SqlParameter statusInProgressParam = new("statusInProgress", CaseStatusGuids.InProgress);
SqlParameter statusOnHoldParam = new("statusOnHold", CaseStatusGuids.OnHold);
const string TICKET_SQL =
#"SELECT * FROM c " +
"WHERE c.StatusGuid IN (#statusNewParam, #statusInProgress, #statusOnHold) " +
"AND EXISTS ( " +
"SELECT VALUE n FROM n IN c.caseservicepartner_collection " +
"WHERE n.PartnerAssignedUserGuid = #userMasterGuid) ";
// Use CosmosQueryableExtensions instead of _context.Cases.FromSqlRaw to avoid ambiguous namespace.
// https://github.com/dotnet/efcore/issues/26502
return CosmosQueryableExtensions
.FromSqlRaw(_contextCosmos.Tickets, TICKET_SQL, statusNewParam, statusInProgressParam, statusOnHoldParam, userMasterGuidParam)
.OrderByDescending(t => t.CreatedDateTime)
.ToListAsync();
When I execute this query in the Cosmos Data Explorer I get a valid result - an array of items.
SELECT * FROM c WHERE c.StatusGuid IN ('63295b5e-de34-4555-b736-408dae18aaa0', '55d05dde-6b71-475f-8ee5-5549e2187423', 'e5267754-d416-4d1f-b42f-700dc5bb13d3') AND EXISTS ( SELECT VALUE n FROM n IN c.caseservicepartner_collection WHERE n.PartnerAssignedUserGuid = 'f3e9dd05-c580-4390-8998-61ce915d2da3')
[
{
"CreatedDateTime": "2022-08-17T08:22:54.017000+00:00",
"CaseNumber": 111,
"AssignedTeamGuid": null,
"TicketTypeGuid": "18ba2bba-557f-4bbd-9b45-029194761980",
...
},
{
...
}
]
However, when I execute this using EFCore, it returns no data. Looking at the EFCore log, it seems to wrap this query in an outer select, as follows:
-- EFCore adds this
SELECT c
FROM (
-- My Query
SELECT * FROM c WHERE c.StatusGuid IN (#statusNewParam, #statusInProgress, #statusOnHold) AND EXISTS ( SELECT VALUE n FROM n IN c.caseservicepartner_collection WHERE n.PartnerAssignedUserGuid = #userMasterGuid)
) c
...which when I plug into the Data Explorer, returns a nested structure like this:
[
{
"c": {
"CreatedDateTime": "2022-08-17T08:22:54.017000+00:00",
"CaseNumber": 111,
"AssignedTeamGuid": null,
"TicketTypeGuid": "18ba2bba-557f-4bbd-9b45-029194761980",
...
}
},
]
I suspect this is why the data is not being returned, perhaps due to a type mismatch.
Is there a way to fix this so the array is returned at the root, rather than nested within the c value?
Thanks
UPDATE
I removed the SqlParameters and instead used the string format-like option to pass parameters. That sorted out my issue and date is being returned now.
string TICKET_SQL =
"SELECT * FROM c " +
"WHERE c.StatusGuid IN ({0}, {1}, {2}) " +
"AND EXISTS (SELECT VALUE n FROM n IN c.caseservicepartner_collection WHERE n.PartnerAssignedUserGuid = {3})";
return CosmosQueryableExtensions
.FromSqlRaw(contextCosmos.Tickets, TICKET_SQL, CaseStatusGuids.New, CaseStatusGuids.InProgress, CaseStatusGuids.OnHold, userMasterGuid)
.OrderByDescending(t => t.CreatedDateTime);
.ToList();