How to Create Unique Constraint with Multiple Columns using ServiceStack.OrmLite?

问题

How does one create a unique constraint with ServiceStack.OrmLite (using attributes, hopefully)? The documentation shows how to create a unique constraint only on a single column:

ServiceStack.OrmLite Docs

If it helps, I am using ServiceStack.OrmLite.SqlServer.

回答1:

Service Stack appears to have a CompositeIndex attribute which takes multiple field names. Here's a look at the constructors...

CompositeIndexAttribute(params string[] fieldNames);
CompositeIndexAttribute(bool unique, params string[] fieldNames);

来源：https://stackoverflow.com/questions/21802023/how-to-create-unique-constraint-with-multiple-columns-using-servicestack-ormlite