Index Advisor for Couchbase N1QL Query Statement

Couchbase N1QL query statement

Overview

Index advisor is introduced in Couchbase server 6.5 as a developer preview feature. It targets at providing secondary index recommendation to help DBAs and developers optimize Couchbase N1QL query performance. This version is rule-based, and the index candidates will be generated following the design rules specified here.

Leading array index key for unnest
Equality predicates
IN predicates
Not less than/between/not greater than predicates
Less than/greater than predicates
Array predicates
Derived join filter as leading key for left-hand-side keyspace
IS NOT NULL/MISSING/VALUED predicates
Functional predicates
Partial index condition

Index advisor is designed to work in two ways:

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