Path expected for join error

Question

I'm attempting to execute the following query and I get the above error. Any ideas?

session.CreateQuery("SELECT SUM(NumberHead) AS numberhead " +
                     "FROM Purchase "
                     +"INNER JOIN Lot " 
                     + "ON Purchase.FeedLot = Lot.Id "
                     + "WHERE Purchase.CohortState = 0").List();

Answer 1

try this

SELECT SUM(purchase.NumberHead) AS numberhead FROM Purchase purchase INNER JOIN Lot lot ON purchase.FeedLot = lot.Id WHERE purchase.CohortState = 0