Taras Ledkov created IGNITE-13919:
-------------------------------------
Summary: Calcite integration. Single group aggregates
Key: IGNITE-13919
URL: https://issues.apache.org/jira/browse/IGNITE-13919
Project: Ignite
Issue Type: Improvement
Components: sql
Reporter: Taras Ledkov
Investigate the optimization for single group aggregates,
e.g.: {{SELECT <aggregates> FROM <table>}}
Now the hash based aggregates are used for this case.
We can obtain a little performance improvement.
Also the special cases (e.g.: {{SELECT COUNT(<any-columns>) FROM <table>}}) may
be optimized to use table/cache size.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
