# Which Problems Are Solved
During performance testing of the `eventstore.fields` table we found
some long running queries which searched for the aggregate id.
# How the Problems Are Solved
A new index was added to the `eventstore.fields`-table called
`f_aggregate_object_type_idx`.
# Additional Changes
None
# Additional Context
- Table was added in https://github.com/zitadel/zitadel/pull/8191
- Part of https://github.com/zitadel/zitadel/issues/7639
