spark git commit: [SPARK-20620][TEST] Improve some unit tests for NullExpressionsSuite and TypeCoercionSuite

Repository: spark Updated Branches: refs/heads/master 8e96acf71 -> 5301a19a0 [SPARK-20620][TEST] Improve some unit tests for NullExpressionsSuite and TypeCoercionSuite ## What changes were proposed in this pull request? add more datatype for some unit tests ## How was this patch tested? uni

spark git commit: [SPARK-20211][SQL] Fix the Precision and Scale of Decimal Values when the Input is BigDecimal between -1.0 and 1.0

Repository: spark Updated Branches: refs/heads/master b78e3849b -> 8e96acf71 [SPARK-20211][SQL] Fix the Precision and Scale of Decimal Values when the Input is BigDecimal between -1.0 and 1.0 ### What changes were proposed in this pull request? The precision and scale of decimal values are wr