在 Cosmos DB 中使用复合索引是否增强了具有多个相等过滤器且没有范围/orderby 过滤器的查询？

Question

The indexing policy document explains the composite index is useful when there is minimum of one equality and one range/orderby query. But it doesn't explain if it's useful when the query have only multiple equality filters and no range/order by filter.

The Mongo DB has a equivalent compound index that helps while querying with multiple equality filter and no range filter.

For example the query will be like this.

Select * from c where c.FirstName = "Hi" and c.LastName ="Hello"

Answer 1

In the precise query you have as an example it is unlikely to help. It could provide some benefit but you'd have to have data with extreme cardinality such as a time stamp.