Expression builder does not support lt/gt comparision operators for strings

[vgpro54321]

Hello All,

in C# string do not implement string comparison operands >, <, >=, <=.
As a result, it is impossible to provide lambda to Filter library function that compares string value to a constant.

Similar problem Azure Table API solves by specially handling methods in lambdas: string.CompareTo and string.Compare.

Can this functionality be added?