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https://issues.apache.org/jira/browse/DRILL-2190?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14740247#comment-14740247
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Sean Hsuan-Yi Chu commented on DRILL-2190:
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[~vicky] Would you mind helping check again?
The commit id seems recent enough. It might have been worked
> Failure to order by function if DISTINCT clause is present
> ----------------------------------------------------------
>
> Key: DRILL-2190
> URL: https://issues.apache.org/jira/browse/DRILL-2190
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Affects Versions: 0.8.0
> Reporter: Victoria Markman
> Assignee: Sean Hsuan-Yi Chu
> Fix For: 1.2.0
>
>
> {code}
> 0: jdbc:drill:schema=dfs> select * from t1;
> +------------+------------+------------+
> | a1 | b1 | c1 |
> +------------+------------+------------+
> | 1 | aaaaa | 2015-01-01 |
> | 2 | bbbbb | 2015-01-02 |
> | 3 | ccccc | 2015-01-03 |
> | 4 | null | 2015-01-04 |
> | 5 | eeeee | 2015-01-05 |
> | 6 | fffff | 2015-01-06 |
> | 7 | ggggg | 2015-01-07 |
> | null | hhhhh | 2015-01-08 |
> | 9 | iiiii | null |
> | 10 | jjjjj | 2015-01-10 |
> +------------+------------+------------+
> 10 rows selected (0.092 seconds)
> 0: jdbc:drill:schema=dfs> select distinct count(distinct a1) from t1 group by
> b1 order by 1;
> Query failed: SqlValidatorException: Expression 'COUNT(`t1`.`a1`)' is not in
> the select clause
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> {code}
> Replaced ordinal with function: fails
> {code}
> 0: jdbc:drill:schema=dfs> select distinct count(distinct a1) from t1 group by
> b1 order by count(distinct a1);
> Query failed: SqlValidatorException: Expression 'COUNT(DISTINCT `a1`)' is not
> in the select clause
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> {code}
> Different aggregate function without DISTINCT clause: fails
> {code}
> 0: jdbc:drill:schema=dfs> select distinct sum(a1) from t1 group by b1 order
> by 1;
> Query failed: SqlValidatorException: Expression 'SUM(`t1`.`a1`)' is not in
> the select clause
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> {code}
> Added alias to the function and order by alias: fails
> {code}
> 0: jdbc:drill:schema=dfs> select distinct sum(a1) as x from t1 group by b1
> order by x;
> Query failed: SqlValidatorException: Expression 'SUM(`t1`.`a1`)' is not in
> the select clause
> Error: exception while executing query: Failure while executing query.
> (state=,code=0)
> {code}
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