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https://issues.apache.org/jira/browse/HIVE-857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Carl Steinbach updated HIVE-857:
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Fix Version/s: 0.4.1
Affects Version/s: (was: 0.4.1)
Component/s: Query Processor
> Transform should produce objects in the same type as specified at runtime
> -------------------------------------------------------------------------
>
> Key: HIVE-857
> URL: https://issues.apache.org/jira/browse/HIVE-857
> Project: Hadoop Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.4.0
> Reporter: Zheng Shao
> Assignee: Zheng Shao
> Fix For: 0.4.1
>
> Attachments: HIVE-857.1.patch
>
>
> The following code fails at runtime, because the "clicked" field produced by
> "transform" is actually of type String at runtime, instead of boolean.
> {code}
> INSERT OVERWRITE TABLE feature_index
> SELECT
> temp.feature,
> temp.ad_id,
> sum(if(temp.clicked, 1, 0)) / cast(count(temp.clicked) as DOUBLE) as
> clicked_percent
> FROM (
> SELECT concat('ua:', trim(lower(ua.feature))) as feature, ua.ad_id,
> ua.clicked
> FROM (
> MAP raw_logs.user_agent, raw_logs.ad_id, raw_logs.clicked
> USING 'my.py' as (feature STRING, ad_id STRING, clicked BOOLEAN)
> FROM raw_logs
> ) ua
> ) temp
> GROUP BY temp.feature, temp.ad_id;
> {code}
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