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From gatorsmile <>
Subject [GitHub] spark issue #18986: [SPARK-21774][SQL] The rule PromoteStrings should cast a...
Date Fri, 18 Aug 2017 16:29:04 GMT
Github user gatorsmile commented on the issue:
    @stanzhai Implicit type casting has to follow some rules. If you think this is a bug,
could you do a complete investigation about this issue? For example, how Hive handles the
type promotion? 
    If needed, we can consider supporting different type promotion/casting modes. (e.g., one
is Hive compatible)

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