问关于使用cast函数在pyspark中处理时间信息EN在编写 PHP 应用时经常需要处理日期和时间，这篇文章带你...
Kafka 中,要求必须value字段值,类型为String val ds = df .selectExpr("CAST(key AS STRING)", "CAST(value AS STRING...", "2") .getOrCreate() // 导入隐式转换和函数库 import org.apache.spark.sql.functions._ import spark.implicits...导入隐式转换和函数库 import org.apache.spark.sql....
Reading time:10 mins readIn PySpark, you can cast or change the DataFrame column data type using cast() function of Column class, in this article, I will be using withColumn(), selectExpr(), and SQL expression to cast the from String to Int (Integer Type), String to Boolean e.t.c ...
I have just tested the same in pyspark2.1. That works fine my site. See below: beeline 0: jdbc:hive2://dkhdp262.openstacklocal:2181,> create table test_orc (b string,t timestamp) stored as ORC; 0: jdbc:hive2://dkhdp262.openstacklocal:2181,> select * from test_orc; +---+...
I have just tested the same in pyspark2.1. That works fine my site. See below: beeline 0: jdbc:hive2://dkhdp262.openstacklocal:2181,> create table test_orc (b string,t timestamp) stored as ORC; 0: jdbc:hive2://dkhdp262.openstacklocal:2181,> select * from test_orc; +-...