[SPARK-18950][SQL] Report conflicting fields when merging two StructTypes#16365

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jiayue-zhang wants to merge 4 commits intoapache:masterfrom

jiayue-zhang:spark-18950

Commits on Dec 20, 2016

[SPARK-18950][SQL] Report conflicting fields when merging two StructTypes
jiayue-zhang
committed

Commits on Jul 24, 2017

Add test for merge conflict message.
jiayue-zhang
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Commits on Jul 31, 2017