What is the difference between System.Linq.Dynamic.Core and System.Linq.Dynamic? I am currently using System.Linq.Dynamic and it does not contain support for Select and SelectMany (among other extension methods). Does System.Linq.Dynamic.Core support these methods?
System.Linq.Dynamic.Core is more up to date and has more functionality and does also support NET Core / NETStandard (besides net35, net40 and net45 and up)
SelectMany is indeed supported.
For more information see the github page and browse the examples, unit-tests and help page.
Note: I'm the maintainer from this project.