How do I truncate a PySpark dataframe of timestamp type to the day?

Question

I have a PySpark dataframe that includes timestamps in a column (call the column \'dt\'), like this:

2018-04-07 16:46:00
2018-03-06 22:18:00

<

Answer 1

One simple way to do it with string manipulation:

from pyspark.sql.functions import lit, concat

df = df.withColumn('date', concat(df.date.substr(0, 10), lit(' 00:00:00')))