[
https://issues.apache.org/jira/browse/HIVE-22064?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Gopal V updated HIVE-22064:
---------------------------
Component/s: CBO
> CBO: Rewrite year() predicate to a constant condition
> -----------------------------------------------------
>
> Key: HIVE-22064
> URL: https://issues.apache.org/jira/browse/HIVE-22064
> Project: Hive
> Issue Type: Improvement
> Components: CBO
> Reporter: Gopal V
> Priority: Major
>
> {code}
> CREATE TEMPORARY TABLE users (signup_date date, user_id bigint) stored as ORC;
> INSERT INTO users values("1999-01-01", 1);
> EXPLAIN ANALYZE
> SELECT year(signup_date), count(distinct user_id) from users where
> year(signup_date) BETWEEN 2017 and 2019
> GROUP BY year(signup_date);
> {code}
> The YEAR() or EXTRACT(.... YEAR) is not rewritten into a constant for
> push-down.
> {code}
> EXPLAIN ANALYZE
> SELECT year(signup_date), count(distinct user_id) from users where
> signup_date BETWEEN DATE'2017-01-01' and DATE'2019-12-31'
> GROUP BY year(signup_date);
> {code}
> Does push-down into the storage layers.
--
This message was sent by Atlassian JIRA
(v7.6.14#76016)
