猪舍入小数点后两位 [英] Pig Round Decimal to Two Places

问题描述

关于如何在Apache Pig中将Float数据类型四舍五入到小数点后两位的任何想法?

Any ideas on how I Can Round a Float data type to 2 decimal places in Apache Pig?

例如:

  test = FOREACH (JOIN Load by (Op1, Op2), Load2 by (Op3,Op4)) GENERATE 
  Load2::Number2 *Load::Number1 as Output

Number1和Number2字段是浮点型，我目前的计算为我提供了5到6个小数位.

The fields Number1 and Number2 are floats.My current calculations give me 5 to 6 decimal places.

推荐答案

尝试一下:

 B = FOREACH A GENERATE (((A.myfloat1 * A.myfloat2)*100f)ROUND)/100f AS myfloat3

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