Entity Framework is slow because of derived tables

Question

I am using MySQL Connector/Net 6.5.4 with LINQ to entities, and I frequently get terrible query performance because the entity framework generates queries that use derived table

Answer 1

I think your query statement is missing 'select'. You have not identified the record(s) you want. your query:

var culverCustomers = from cs in db.CustomerSummaries 
                        where cs.Street == "Culver";

//no select

what are you selecting from the table? try this

example:

var culverCustomers =  from cs in db.CustomerSummaries 
                        where cs.Street == "Culver"
                        select cs;