sathiyapk commented on a change in pull request #34593:
URL: https://github.com/apache/spark/pull/34593#discussion_r754671246
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala
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@@ -1500,26 +1514,37 @@ abstract class RoundBase(child: Expression, scale:
Expression,
}
/**
- * Round an expression to d decimal places using HALF_UP rounding mode.
- * round(2.5) == 3.0, round(3.5) == 4.0.
+ * Round an expression to d decimal places using given rounding mode, default
rounding mode HALF_UP.
+ * round(2.5) == 3.0, round(3.5) == 4.0,
+ * round(3.6, 0, 'half_down') == 4.0, round(3.6, 0, 'down') == 3.0.
*/
// scalastyle:off line.size.limit
@ExpressionDescription(
- usage = "_FUNC_(expr, d) - Returns `expr` rounded to `d` decimal places
using HALF_UP rounding mode.",
+ usage = "_FUNC_(expr, d) - Returns `expr` rounded to `d` decimal places
using given rounding mode.",
examples = """
Examples:
> SELECT _FUNC_(2.5, 0);
3
+ > SELECT _FUNC_(2.6, 0, 'down');
Review comment:
yes sure.
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