PySpark 列的cast(~)方法返回指定类型的新Column。 参数 1.dataType|Type或string 将列转换为的类型。 返回值 一个新的Column对象。 例子 考虑以下PySpark DataFrame: df = spark.createDataFrame([("Alex",20), ("Bob",30), ("Cathy",40)], ["name","age"]) df.show() +---+---+ | name|...
import pyspark.sql.functions as F # That's not part of the solution, just a creation of a sample dataframe # df = spark.createDataFrame([(10, 1,2,3,4),(20, 5,6,7,8)],'Id int, Revenue int ,GROSS_PROFIT int ,Net_Income int ,Enterprise_Value int') cols_to_cast = ["...
using System; using System.Linq; using System.Data.Linq; using System.Data.Linq.Mapping; [Table(Name = "YourTableName")] public class YourTable { [Column(IsPrimaryKey = true)] public int ID { get; set; } [Column] public string Data { get; set; } } public class Program { public ...
If you are using PySpark and loaded Hive data into DataFrame you can readPySpark Cast Data type with Example Hive CAST String to Integer Data Types Hive support casting String into several numeric data types likeTINYINT(1-byte signed integer, from -128 to 127),SMALLINT(2-byte signed integer...
Python pyspark Column.cast用法及代码示例本文简要介绍 pyspark.sql.Column.cast 的用法。 用法: Column.cast(dataType)将列转换为类型 dataType。版本1.3.0 中的新函数。例子:>>> df.select(df.age.cast("string").alias('ages')).collect() [Row(ages='2'), Row(ages='5')] >>> df.select(df....