Storage-Attached Indexing (SAI) Overview
Storage-Attached Indexing (SAI) lets you create one or multiple secondary indexes on the same database table, with each SAI index based on any single column.
Exception: There is no need to define an SAI index based on a single-column partition key.
Use Storage-Attached Indexing (SAI) to create multiple secondary indexes on the same table.
Follow the steps to get started quickly with SAI.
Frequently asked questions about SAI.
Create, check, alter, drop, and query SAI.
Configuring and monitoring SAI indexes.
Understand the columns on which you can define SAI indexes and run queries.
Reference: CREATE CUSTOM INDEX, DROP INDEX