Spark sql自定义函数UTF/UTAF
自定义UTF函数 弱类型
package SparkSql
import org.apache.log4j.{Level, Logger}
import org.apache.spark.SparkConf
import org.apache.spark.sql.expressions.{MutableAggregationBuffer, UserDefinedAggregateFunction}
import org.apache.spark.sql.types.{DataType, DoubleTyp
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2020-09-29 20:06:42 ·
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