df.select("" + columnName + "").show()
;)https://stackoverflow.com/questions/49032451/dataf...df = df.withColumn("" + columnName + "", df.col("" + columnName + "").cast("double"));
df.select("" + columnName + "").show();
Ошибка org.apache.hive.jdbc.HiveBaseResultSet.getBigDecimal(HiveBaseResultSet.java:137) ~[hive-jdbc-3.1.2.jar:3.1.2]