[
https://issues.apache.org/jira/browse/IMPALA-7083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Michael Smith updated IMPALA-7083:
----------------------------------
Target Version: (was: Impala 4.3.0)
> AnalysisException for GROUP BY and ORDER BY expressions that are folded to
> constants from 2.9 onwards
> -----------------------------------------------------------------------------------------------------
>
> Key: IMPALA-7083
> URL: https://issues.apache.org/jira/browse/IMPALA-7083
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 2.9.0
> Reporter: Eric Lin
> Priority: Critical
> Labels: regression
>
> To reproduce, please run below impala query:
> {code}
> DROP TABLE IF EXISTS test;
> CREATE TABLE test (a int);
> SELECT (
> CASE
> WHEN (1 =1)
> THEN 1
> ELSE a
> end) AS b
> FROM test
> GROUP BY 1
> ORDER BY (
> CASE
> WHEN (1 =1)
> THEN 1
> ELSE a
> end);
> {code}
> It will fail with below error:
> {code}
> ERROR: AnalysisException: ORDER BY expression not produced by aggregation
> output (missing from GROUP BY clause?): (CASE WHEN TRUE THEN 1 ELSE a END)
> {code}
> However, if I replace column name "a" as a constant value, it works:
> {code}
> SELECT (
> CASE
> WHEN (1 =1)
> THEN 1
> ELSE 2
> end) AS b
> FROM test
> GROUP BY 1
> ORDER BY (
> CASE
> WHEN (1 =1)
> THEN 1
> ELSE 2
> end);
> {code}
> This issue is identified in CDH5.12.x (Impala 2.9), and no issues in 5.11.x
> (Impala 2.8).
> We know that it can be worked around by re-write as below:
> {code}
> SELECT (
> CASE
> WHEN (1 =1)
> THEN 1
> ELSE a
> end) AS b
> FROM test
> GROUP BY 1
> ORDER BY 1;
> {code}
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-all-unsubscr...@impala.apache.org
For additional commands, e-mail: issues-all-h...@impala.apache.org
