public static async Task <IEnumerable <e.target_route> > GetRoutes(e.trace_param param)
{
using (var db = d.ConnectionFactory())
{
return(await db.QueryAsync <e.target_route>(
@"SELECT lat, lng
FROM people_history
WHERE mhash=@mhash AND timestamp BETWEEN @start_date AND @end_date
ORDER BY timestamp" ,
param));
}
}
public static async Task <e.trace_result> GetTraceData(e.trace_param param)
{
using (var db = d.ConnectionFactory())
{
var rotues = await GetRoutes(param);
var contactPeople = await db.QueryAsync <e.contact_person>(
$@"WITH tbl AS
(
SELECT *
FROM people_history
WHERE timestamp BETWEEN @start_date AND @end_date
)
SELECT mhash, count, timestamp AS last_contact, lat, lng
FROM
(
SELECT *, MAX(r) OVER (PARTITION BY mhash) AS count
FROM
(
SELECT *, ROW_NUMBER() OVER (PARTITION BY mhash ORDER BY timestamp DESC) AS r
FROM
(
SELECT t2.mhash, t2.lat, t2.lng, t1.timestamp, dbo.GetDistance(t1.lat, t1.lng, t2.lat, t2.lng) AS distance
FROM
(
SELECT mhash, lat, lng, timestamp,
DATEADD(MI, -{v.ContactTime}, timestamp) AS start_time,
DATEADD(MI, {v.ContactTime}, timestamp) AS end_time
FROM tbl
WHERE mhash=@mhash
) t1,
(
SELECT mhash, lat, lng, timestamp
FROM tbl
WHERE mhash<>@mhash
) t2
WHERE t2.timestamp BETWEEN t1.start_time AND t1.end_time
) t3
WHERE distance < 3
) t4
) t5
WHERE r=1" ,
param);
return(new e.trace_result
{
target_routes = rotues,
contact_people = contactPeople
});
}
}
