Author: hashutosh
Date: Wed Sep 17 15:33:38 2014
New Revision: 1625633
URL: http://svn.apache.org/r1625633
Log:
HIVE-8150 : [CBO] Type coercion in union queries (Ashutosh Chauhan via John
Pullokkaran)
Modified:
hive/branches/cbo/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
Modified:
hive/branches/cbo/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
URL:
http://svn.apache.org/viewvc/hive/branches/cbo/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java?rev=1625633&r1=1625632&r2=1625633&view=diff
==============================================================================
---
hive/branches/cbo/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
(original)
+++
hive/branches/cbo/ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java
Wed Sep 17 15:33:38 2014
@@ -12393,6 +12393,13 @@ public class SemanticAnalyzer extends Ba
tmpDTLst.add(rightFieldDT);
unionFieldDT = cluster.getTypeFactory().leastRestrictive(tmpDTLst);
+ if (null == unionFieldDT) {
+ //TODO : union32.q results in this, but it seems Optiq is too
+ // restrictive here. Follow-up with Optiq.
+ throw new OptiqSemanticException("Can't find common type for: "
+ + tmpDTLst);
+ }
+
if (!unionFieldDT.equals(leftFieldDT))
leftNeedsTypeCast = true;
leftProjs.add(cluster.getRexBuilder().ensureType(unionFieldDT,
