anchor.diff:      query {
         for customers  in ctx.Main.Customers do
         where (customers.ContactTitle = "USA")
  -      select (customers)} |> Seq.toArray
  +      select (customers)}
   
   (**
  -The variable that is returned from the query is sometimes called a computation.
  -If you write a foreach loop and display the address field from the customers returned by this computation, you see the following output:
  -* GREAL|Great Lakes Food Market|Howard Snyder|Marketing Manager|2732 Baker Blvd.|Eugene|OR|97403|USA|(503) 555-7555|
  -* HUNGC|Hungry Coyote Import Store|Yoshi Latimer|Sales Representative|City Center Plaza 516 Main St.|Elgin|OR|97827|USA|(503) 555-6874|(503) 555-2376
  -* ...
  -* TRAIH|Trail's Head Gourmet Provisioners|Helvetius Nagy|Sales Associate|722 DaVinci Blvd.|Kirkland|WA|98034|USA|(206) 555-8257|(206) 555-2174
  -* WHITC|White Clover Markets|Karl Jablonski|Owner|305 - 14th Ave. S. Suite 3B|Seattle|WA|98128|USA|(206) 555-4112|(206) 555-4115// You can now write a second query against the results of this query:
  +The variable that is returned from the query is sometimes called a computation. If you write evaluate 
  +(e.g. a foreach loop or `|> Seq.toList`) and display the address field from the customers returned by this 
  +computation, you see the following output:
  +
  +```
  +GREAL|Great Lakes Food Market|Howard Snyder|Marketing Manager|2732 Baker Blvd.|Eugene|OR|97403|USA|(503) 555-7555|
  +HUNGC|Hungry Coyote Import Store|Yoshi Latimer|Sales Representative|City Center Plaza 516 Main St.|Elgin|OR|97827|USA|(503) 555-6874|(503) 555-2376
  +...
  +TRAIH|Trail's Head Gourmet Provisioners|Helvetius Nagy|Sales Associate|722 DaVinci Blvd.|Kirkland|WA|98034|USA|(206) 555-8257|(206) 555-2174
  +WHITC|White Clover Markets|Karl Jablonski|Owner|305 - 14th Ave. S. Suite 3B|Seattle|WA|98128|USA|(206) 555-4112|(206) 555-4115
  +```
   
   You can now write a second query against the result of this query:
   *)
  
positive.code: Therefore composable query means that you can do logics to compose just one database-SQL-query from multiple queryables.
  By using composable queries you can shorten the Database transactions and keep the connection open a minimum of time.
  
  ## Generate composable queries by using Linq IEnumerable
  
  With composable queries you can combine two queries in multiple ways, and one query can be used as the building block for the other query.
  To see how this works, let’s look at a simple query:
  
negative.code:         } |> Seq.toArray
  
  (**
  ### Generate composable queries by using FSharp.Linq.ComposableQuery
  
  The SQLProvider also supports composable queries by integrating following library FSharpLinqComposableQuery.
  You can read more about that library here: [FSharp.Linq.ComposableQuery](http://fsprojects.github.io/FSharp.Linq.ComposableQuery)
  