We have T_SC_SERVICE table with a INSTANCE_ID column which is type Timestamp(6) in Oracle.
I'm using .NET Framework 4.5, Entity Framework 6 and DB first approaches.
I'm trying to Add and Select item from this table with using LINQ.
Insert with LINQ as shown below:
Service newItem = new Service()
{
InstanceId = DateTime.Now,
};
this.ObjectSet.Add(newItem);
this.SaveChanges();
That LINQ generates SQL as below. As you can see INSTANCE_ID parameter is send as a DateTime as expected.
insert into "DGARSMART"."T_SC_SERVICE"("INSTANCE_ID")
values (:p0)
-- :p0: '29.08.2019 07:33:38' (Type = DateTime)
-- Executing at 29.08.2019 07:33:38 +03:00
-- Completed in 66 ms with result: 1
Here is my Problem:
Select with LINQ as shown below:
internal Service GetServiceByInstanceId(DateTime instanceId)
{
return this.ObjectSet.FirstOrDefault(i => i.InstanceId == instanceId);
}
That LINQ generates SQL as below. As you can see Instance_ID is send as a Date not DateTime. So it always return Null. This is the same entity object and same model. I could not figure out why this LINQ is sending DateTime as type of Date instead of DateTime.
SELECT
"Extent1"."INSTANCE_ID" AS "INSTANCE_ID",
FROM "DGARSMART"."T_SC_SERVICE" "Extent1"
WHERE (("Extent1"."INSTANCE_ID" = :p__linq__0) AND (:p__linq__0 IS NOT NULL)) AND (ROWNUM <= (1)
-- p__linq__0: '29.08.2019 07:33:38' (Type = Date)
-- Executing at 29.08.2019 07:34:47 +03:00
-- Completed in 5 ms with result: OracleDataReader
I'm using these packages:
<package id="Oracle.ManagedDataAccess" version="12.2.1100" targetFramework="net45" />
<package id="Oracle.ManagedDataAccess.EntityFramework" version="12.2.20190115" targetFramework="net45" />
<package id="EntityFramework" version="6.0.0" targetFramework="net45" />
