网站介绍:文章浏览阅读318次。代码 val ds = Seq( (Some("rowkey1"), "strname1", Some(1), 1.1f, 1.1d, 1L) , (None, "strname1", None, 1.1f, 1.1d, 1L) ).toDF( "rowKey" , "strName" , "intName" , "fload.._spark cast转换成double有null值
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