[jira] [Resolved] (CALCITE-2050) Exception when pushing postaggregates into Druid

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-2050?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jesus Camacho Rodriguez resolved CALCITE-2050.
----------------------------------------------
    Resolution: Fixed

Fixed in http://git-wip-us.apache.org/repos/asf/calcite/commit/f7933c7.

> Exception when pushing postaggregates into Druid
> ------------------------------------------------
>
>                 Key: CALCITE-2050
>                 URL: https://issues.apache.org/jira/browse/CALCITE-2050
>             Project: Calcite
>          Issue Type: Bug
>          Components: druid
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>             Fix For: 1.15.0
>
>
> After Calcite is upgraded to 1.14 and the rule to push post-aggregations to Druid is enabled, the following query will fail:
> {code}
> EXPLAIN
> SELECT language, robot, sum(added) - sum(delta) AS a
> FROM druid_table_1
> WHERE extract (week from `__time`) IN (10,11)
>   AND robot='Bird Call'
> GROUP BY language, robot;
> {code}
> The error we get is the following:
> {code}
> Cannot add expression of different type to set:
> set type is RecordType(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary" language, VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary" robot, DOUBLE a) NOT NULL
> expression type is RecordType(VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary" language, DOUBLE postagg#0) NOT NULL
> set is rel#1507:HiveProject.HIVE.[](input=HepRelVertex#1514,language=$0,robot=CAST(_UTF-16LE'Bird Call'):VARCHAR(2147483647) CHARACTER SET "UTF-16LE" COLLATE "ISO-8859-1$en_US$primary",a=-($1, $2))
> expression is DruidQuery#1516
> {code}



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