Github user parthchandra commented on a diff in the pull request:
https://github.com/apache/drill/pull/501#discussion_r65284923
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/resolver/ResolverTypePrecedence.java
---
@@ -78,6 +78,9 @@
precedenceMap.put(MinorType.INTERVALYEAR, i+= 2);
precedenceMap.put(MinorType.INTERVAL, i+= 2);
precedenceMap.put(MinorType.UNION, i += 2);
+ precedenceMap.put(MinorType.MAP, i += 2);
--- End diff --
List and Map cannot have a higher precedence than Map. Also, it is not
clear what the precedence of List and Map should be. Can you post a specific
question to the dev list?
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