Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/17906#discussion_r116132265
--- Diff:
sql/core/src/test/scala/org/apache/spark/sql/MathFunctionsSuite.scala ---
@@ -231,6 +231,19 @@ class MathFunctionsSuite extends QueryTest with
SharedSQLContext {
Seq(Row(BigDecimal("0E3"), BigDecimal("0E2"), BigDecimal("0E1"),
BigDecimal(3),
BigDecimal("3.1"), BigDecimal("3.14"), BigDecimal("3.142")))
)
+
+ val bdPi: BigDecimal = BigDecimal(31415925L, 7)
+ checkAnswer(
+ sql(s"SELECT round($bdPi, 7), round($bdPi, 8), round($bdPi, 9),
round($bdPi, 10), " +
+ s"round($bdPi, 100), round($bdPi, 6), round(null, 8)"),
+ Seq(Row(bdPi, bdPi, bdPi, bdPi, bdPi, BigDecimal("3.141593"), null))
+ )
+
+ checkAnswer(
+ sql(s"SELECT bround($bdPi, 7), bround($bdPi, 8), bround($bdPi, 9),
bround($bdPi, 10), " +
+ s"bround($bdPi, 100), bround($bdPi, 6), bround(null, 8)"),
+ Seq(Row(bdPi, bdPi, bdPi, bdPi, bdPi, BigDecimal("3.141592"), null))
--- End diff --
we can do it in a follow-up
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