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From "Arina Ielchiieva (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-4456) Hive translate function is not working
Date Tue, 01 Mar 2016 08:23:18 GMT
Arina Ielchiieva created DRILL-4456:
---------------------------------------

             Summary: Hive translate function is not working
                 Key: DRILL-4456
                 URL: https://issues.apache.org/jira/browse/DRILL-4456
             Project: Apache Drill
          Issue Type: Improvement
          Components: Functions - Hive
    Affects Versions: 1.5.0
            Reporter: Arina Ielchiieva
             Fix For: Future


In Hive "select translate(name, 'A', 'B') from users" works fine.
But in Drill "select translate(name, 'A', 'B') from hive.`users`" returns the following error:

org.apache.drill.common.exceptions.UserRemoteException: PARSE ERROR: Encountered "," at line
1, column 22. Was expecting one of: "USING" ... "NOT" ... "IN" ... "BETWEEN" ... "LIKE" ...
"SIMILAR" ... "=" ... ">" ... "<" ... "<=" ... ">=" ... "<>" ... "+" ...
"-" ... "*" ... "/" ... "||" ... "AND" ... "OR" ... "IS" ... "MEMBER" ... "SUBMULTISET" ...
"MULTISET" ... "[" ... "." ... "(" ... while parsing SQL query: select translate(name, 'A',
'B') from hive.users ^ [Error Id: ba21956b-3285-4544-b3b2-fab68b95be1f on localhost:31010]

Root cause:
Calcite follows the standard SQL reference.
SQL reference,  ISO/IEC 9075-2:2011(E), section 6.30

<character transliteration> ::=
  TRANSLATE <left paren> <character value expression>
USING <transliteration name> <right paren>

To fix:
1. add support to translate (expession, from_string, to_string) alternative syntax
2. add unit test in org.apache.drill.exec.fn.hive.TestInbuiltHiveUDFs

Changes can be made directly in Calcite and then upgrade to appropriate Calcite version. 



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