Common Table Expression in EntityFramework

Question

I have this query in Sql Server which I need to consume in EntityFramework, So how can I write a EntityFramwork code which will have the same result as this

Answer 1

Getting input from the other experts over SO, I have come up with my own way to achieve this.

IEnumerable<StockGroup> sg = dbContext.ExecuteStoreQuery<StockGroup>(
                        @"WITH    q AS
                                    (
                                    SELECT  *
                                    FROM    LedgerGroups
                                    WHERE   GroupParent = 'Customers'
                                    UNION ALL
                                    SELECT  m.*
                                    FROM    LedgerGroups m
                                    JOIN    q
                                    ON      m.GroupParent = q.GroupName
                                    )
                            SELECT  *
                            FROM    q
                        ");

Answer 2

I dont think there is support for recursive CTEs in LINQ nor in EF. The solution is to expose the CTE as a view. The article on Recursive or hierarchical queries using EF Code First and Migrations shows how to deploy such a view using EF code first migrations. Recursive or hierarchical queries using EF Code First and Migrations

Original source: https://stackoverflow.com/a/11929928/3850405

Answer 3

EF does not support recursive CTE's. Use a view or a table valued function.

Answer 4

You cannot use CTE recursion in Entity Framework.

Answer 5

Use stored procedure and call that stored procedure through EF