Optimize EF Core query with Include()

Question

Optimize EF Core query with Include()

entity-framework entity-framework-core optimization

Question

I have following query within my project and it is consuming lot of time to execute. I am trying to optimize it, but not able to successfully do it. Any suggestions would be highly appreciated.

_context.MainTable
.Include(mt => mt.ChildTable1)
.Include(mt => mt.ChildTable1.ChildTable2)
.Include(mt => mt.ChildTable3)
.Include(mt => mt.ChildTable3.ChildTable4)
.SingleOrDefault(
        mt =>
        mt.ChildTable3.ChildTable4.Id == id 
        &&
        mt.ChildTable1.Operation == operation
        && 
        mt.ChildTable1.Method = method
        && 
        mt.StatusId == statusId);

Pravin K.

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vivek nuna · Accepted Answer · 9/7/2018 12:52:21 PM

Include() gets translates to join and you are using too many joins in the code. You can optimize indexes with the help of DB engine execution plan.

I suggest you not to use all Include in one go. instead, you break the query and apply Include one by one. I meant you apply Include, get the result and then apply theIncludeagain and so..By having more than twoInclude` affect the performance.

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