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From "Krystal (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-4475) Joins containing join key between varbinary and non-varbinary fails
Date Fri, 04 Mar 2016 19:47:40 GMT
Krystal created DRILL-4475:
------------------------------

             Summary: Joins containing join key between varbinary and non-varbinary fails
                 Key: DRILL-4475
                 URL: https://issues.apache.org/jira/browse/DRILL-4475
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning & Optimization
    Affects Versions: 1.5.0
            Reporter: Krystal
            Assignee: Sean Hsuan-Yi Chu


Join queries that contain one join key as varbinary and the other join key as a non-varbinary
such as varchar fails.  For example:

select s.name, s.age, s.gpa, v.registration from student_csv_v s inner join voter_csv_v v
on (s.name = v.name);
Error: VALIDATION ERROR: From line 1, column 95 to line 1, column 109: Cannot apply '=' to
arguments of type '<VARBINARY(1)> = <CHAR(30)>'. Supported form(s): '<COMPARABLE_TYPE>
= <COMPARABLE_TYPE>'

s.name is a varbinary and v.name is char(30).  Drill should implicitly cast the join keys
to varchar at planning time.



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