[SPARK-3363][SQL] Type Coercion should support every type to have null value#2246

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adrian-wang wants to merge 5 commits intoapache:masterfrom

adrian-wang:spark3363-0

Commits on Sep 3, 2014

Type Coercion should support every type to have null value
adrian-wang
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Commits on Sep 4, 2014

make double boolean miss in jsonRDD compatibleType
adrian-wang
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Commits on Sep 5, 2014