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Posted to issues-all@impala.apache.org by "hexianqing (Jira)" <ji...@apache.org> on 2020/03/19 08:22:00 UTC
[jira] [Resolved] (IMPALA-8361) Bound predicates optimization
doesn't work for InlineView
[ https://issues.apache.org/jira/browse/IMPALA-8361?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
hexianqing resolved IMPALA-8361.
--------------------------------
Resolution: Fixed
> Bound predicates optimization doesn't work for InlineView
> ---------------------------------------------------------
>
> Key: IMPALA-8361
> URL: https://issues.apache.org/jira/browse/IMPALA-8361
> Project: IMPALA
> Issue Type: Improvement
> Components: Frontend
> Affects Versions: Impala 3.0, Impala 2.12.0, Impala 3.1.0, Impala 3.2.0, Impala 3.3.0
> Reporter: Fu Lili
> Assignee: hexianqing
> Priority: Major
> Fix For: Impala 3.4.0
>
> Attachments: image-2019-03-26-23-11-49-483.png, image-2019-03-26-23-12-05-276.png
>
>
> Tables for test:
>
> {code:java}
> CREATE TABLE test_a (
> id STRING,
> val STRING
> );
> CREATE TABLE test_b (
> id STRING,
> val STRING
> );
> {code}
>
>
> Bound predicates optimization (implement in Analyzer::getBoundPredicates) works for this sql:
>
> {code:java}
> EXPLAIN
> SELECT count(*) FROM test_a a
> LEFT JOIN
> (SELECT * FROM test_b) b
> ON a.id=b.id
> WHERE upper(b.val)='123';{code}
> !image-2019-03-26-23-11-49-483.png!
>
> But does't work for this one:
>
> {code:java}
> EXPLAIN
> SELECT count(*) FROM test_a a
> LEFT JOIN
> (SELECT *, upper(val) AS upper_val FROM test_b) b
> ON a.id=b.id
> WHERE upper_val='123';
> {code}
> !image-2019-03-26-23-12-05-276.png!
>
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