火花sql分析json列

代码示例

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据框列json分析器火花斯卡拉

import org.apache.spark.sql.functions.{lit, schema_of_json, from_json}
import collection.JavaConverters._

val schema = schema_of_json(lit(df.select($"jsonData").as[String].first))
df.withColumn("jsonData", from_json($"jsonData", schema, Map[String, String]().asJava))

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