[Impala-CR](cdh5-trunk) IMPALA-3155: Disable implicit casting of CHAR to STRING in CASE statements

["Taras Bobrovytsky (Code Review)" <ge...@cloudera.org>]

Taras Bobrovytsky has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/2762

Change subject: IMPALA-3155: Disable implicit casting of CHAR to STRING in CASE statements
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IMPALA-3155: Disable implicit casting of CHAR to STRING in CASE statements

All CHAR children of a case expression were automaticallally implicitly
cast to STRING. This commit removes this behavior for the THEN clause of
a CASE statement.

Change-Id: I4aebac6849898693570bc3164fff40786c215358
---
M fe/src/main/java/com/cloudera/impala/analysis/CaseExpr.java
M fe/src/main/java/com/cloudera/impala/analysis/Expr.java
M testdata/workloads/functional-query/queries/QueryTest/exprs.test
3 files changed, 22 insertions(+), 13 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/62/2762/1
-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I4aebac6849898693570bc3164fff40786c215358
Gerrit-PatchSet: 1
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Taras Bobrovytsky <tb...@cloudera.com>