How to use LEFT JOIN in LINQ

Question

I have this query in Oracle and I am trying to write a Linq query for this below sql. There are 2 datatables DATA_TABLE1 and DATA_TABLE2. Both tables have 2 fields ID1 and ID2.
SELECT A.ID1, A.ID2
FROM DATA_TABLE1 A
LEFT JOIN DATA_TABLE2 B
ON A.ID1 = B.ID1 AND A.ID2 = B.ID2
WHERE B.ID1 IS NULL OR B.ID2 IS NULL

Answer 1

In order to see what query the data provider sent to the server you can do the following.
Just after creating the data context place this line in the code.
db.Database.Log = Console.Write;
Then place a breakpoint after the next line of code, shown next.
var
a =
db.product.Where(p
=>
p.Name.Contains(asKeyword)).ToList();
Then run the application and when it hits the breakpoint open the Visual Studio Output window and the SQL sent to the server should be displayed.
Fernando (MCSD)
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