ClickHouse now supports partial reloading of external dictionaries by updating only the records where a specified field's value is greater than in the previous load.
Why it matters
This feature improves efficiency and performance of dictionary updates by avoiding full reloads, reducing downtime and resource usage when only a subset of data has changed.How to use it
Users can enable partial reloads in external dictionaries by specifying a field to compare during dictionary update operations. Only records with field values greater than those in the previous load will be reloaded.