Allow IndexAttribute on properties

[ajcvickers]

The EF Core 5.0 IndexAttribute is designed to be placed at the class level, rather than on individual properties. This aligns the definition of composite and single column indexes and avoids confusion about whether or not two columns form a single composite index or two single column indexes.

However, this means that it is not possible to put a simple attribute on a property to create a simple single column index on the mapped column. This issue is on the backlog to gather feedback on the level of demand for this feature.

[Lancelotbronner]

I'm very late to the party but I personally like the data attributes API, and having composite attributes at the class level and single attributes at the column makes a lot of sense!

In short, I'm manifesting my desire for this feature :)

[aradalvand]

Hey there, same here, I was surprised to see that this doesn't already exist in EF Core.
It would be nice to have it perhaps for v7.0?

Doesn't seem terribly complicated to implement.