Question

Need to select data in entity framework but need to filter on the childrent and grandchildren

i have 4 tables. Parent -> Child -> GrandChild -> GreatGrandChild I want to return all the parents but filter on child and greatgrandchildren.

in other words (for example)

SELECT     Parent.* 
FROM       Parent 
INNER JOIN Child      
INNER JOIN Grandchild 
INNER JOIN GreatGrandChild 
WHERE      child.Column5           =  600   AND
           GreatGrandChild.Column3 = 1000 

it cant be anomymous type because i need to update the data and saveChanges to the db.

using vs 2010 and EF 4.0

Answer 1

Using linq you should need something like this.

var q = from q1 in dbContext.Parent
        join q2 in dbContext.Children
        on q1.key equals q2.fkey
        join q3 in  ........
        where q4.col1 == 3000
        select q1;