Linq Left Join not working - linq

Question

I am trying to get this query into Linq
SELECT [ID], [Name], LastSync, Phase
FROM [Store]
LEFT JOIN (
SELECT GLog.[StoreId] AS [StoreId], LastSync, Phase
FROM [GGCSyncLog] AS GLog
INNER JOIN (
SELECT MAX(G1.[DateTime]) AS LastSync, G1.[StoreId]
FROM [GGCSyncLog] AS G1
GROUP BY G1.[StoreId]
) AS G2 ON (GLog.[StoreId] = G2.[StoreId]) AND (GLog.[DateTime] = G2.[LastSync])
) AS MostRecentLog ON Store.[ID] = MostRecentLog.[StoreId]
Its results are
ID Name LastSync Phase
1 Sarasota 2010-07-31 5
2 Wellington 2010-07-31 8
3 Tampa International 2013-03-12 8
5 Events NULL NULL
6 PO Holding Store NULL NULL
My Linq returns the correct results except I'm missing the two rows with the null LastSync & Phase. Any idea what's wrong?
from s in Stores
join gLog in
(from g1 in GGCSyncLogs.DefaultIfEmpty()
join g in
(from g in GGCSyncLogs
group g by g.StoreId into gM
select new {
StoreId = gM.Key, LastSync = gM.Max(gg=>gg.DateTime) })
on new {g1.StoreId, LastSync = g1.DateTime} equals new {g.StoreId, g.LastSync}
select new {g1.StoreId, g.LastSync, g1.Phase})
on s.ID equals gLog.StoreId
select new {s.ID, s.Name,
LastSync = (gLog != null ? (DateTime?)gLog.LastSync : null),
Phase = (gLog != null ? (int?)gLog.Phase : null) }

Answer 1

You should read about join clause and How to: Perform Left Outer Joins.
It's hard to get working solution without database here, but hope this will help you get back on track:
var g2 = from g1 in GGCSyncLogs
group g1 by g1.StoreId into gM;
var MostRecentLogs = from gLog in GGCSyncLogs
join g in g2 on new { gLog.StoreId, LastSync = gLog.DateTime} equals new { g.StoreId, g.LastSync }
select new { gLog.StoreId, LastSync = gLog.Date, Phase = gLog.Phase };
var results = from s in Stores
join gLog in MostRecentLogs on s.Id equals gLog.StoreId into gl
from l in gl.DefaultIfEmpty(new { LastSync = null, Phase = null })
select new {
s.Id,
s.Name,
l.LastSync,
l.Phase
};

Answer 2

I had to use an "into"
from s in Stores
join gRec in
(from g in GGCSyncLogs
join g2 in
(from g1 in GGCSyncLogs
group g1 by g1.StoreId into gM
select new {StoreId = gM.Key,LastSync = gM.Max(gg=>gg.DateTime)})
on new {g.StoreId, LastSync = g.DateTime} equals new {g2.StoreId, g2.LastSync}
select new {g.StoreId, g2.LastSync, g.Phase})
on s.ID equals gRec.StoreId into gRec2
from gRec3 in gRec2.DefaultIfEmpty()
select new {s.ID, s.Name,
LastSync = (gRec3 != null ? (DateTime?)gRec3.LastSync : null),
Phase = (gRec3 != null ? (int?)gRec3.Phase : null) }