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https://issues.apache.org/jira/browse/SOLR-10341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15936429#comment-15936429
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Joel Bernstein edited comment on SOLR-10341 at 3/22/17 2:42 PM:
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I'm seeing a bug with avg on a single table, with casting between long and
double. Looking into this now.
was (Author: joel.bernstein):
I've reproduced this on a single table, so this is a bug.
> SQL AVG function mis-interprets field type.
> -------------------------------------------
>
> Key: SOLR-10341
> URL: https://issues.apache.org/jira/browse/SOLR-10341
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Parallel SQL
> Affects Versions: 6.5
> Reporter: Timothy Potter
> Attachments: Screen Shot 2017-03-22 at 8.12.33 AM.png
>
>
> Using movielens data (users, movies, ratings), I tried the following SQL:
> {code}
> curl --data-urlencode "stmt=SELECT solr.title as title, avg(rating) as
> avg_rating FROM ratings INNER JOIN (select movie_id,title from movies where
> _query_='plot_txt_en:love') as solr ON ratings.movie_id = solr.movie_id GROUP
> BY title ORDER BY avg_rating DESC LIMIT 10"
> "http://localhost:8983/solr/movies/sql?aggregationMode=facet";
> {code}
> Solr returns this error:
> {code}
> {"result-set":{"docs":[{"EXCEPTION":"Failed to execute sqlQuery 'SELECT
> solr.title as title, avg(rating) as avg_rating FROM ratings INNER JOIN
> (select movie_id,title from movies where _query_='plot_txt_en:love') as solr
> ON ratings.movie_id = solr.movie_id GROUP BY title ORDER BY avg_rating DESC
> LIMIT 10' against JDBC connection 'jdbc:calcitesolr:'.\nError while executing
> SQL \"SELECT solr.title as title, avg(rating) as avg_rating FROM ratings
> INNER JOIN (select movie_id,title from movies where
> _query_='plot_txt_en:love') as solr ON ratings.movie_id = solr.movie_id GROUP
> BY title ORDER BY avg_rating DESC LIMIT 10\": From line 1, column 29 to line
> 1, column 39: Cannot apply 'AVG' to arguments of type 'AVG(<JAVATYPE(CLASS
> JAVA.LANG.STRING)>)'. Supported form(s):
> 'AVG(<NUMERIC>)'","EOF":true,"RESPONSE_TIME":92}]}}
> {code}
> rating is a TrieInt with docValues enabled.
> {code}
> <field name="rating" type="tint" docValues="true" multiValued="false"
> indexed="true" stored="true"/>
> {code}
> see screenshot
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