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[SPARK-31735][SQL] Include date/timestamp in the summary report #28554

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[SPARK-31735][SQL] Include date/timestamp in the summary report #28554

wants to merge 2 commits into from

Commits on Jun 7, 2020

  1. [SPARK-31735][CORE] Include date/timestamp in the summary report 

    Currently dates are missing from the export:

from datetime import datetime, timedelta, timezone
from pyspark.sql import types as T
from pyspark.sql import Row
from pyspark.sql import functions as F

START = datetime(2014, 1, 1, tzinfo=timezone.utc)

n_days = 22

date_range = [Row(date=(START + timedelta(days=n))) for n in range(0, n_days)]

schema = T.StructType([T.StructField(name="date", dataType=T.DateType(), nullable=False)])

rdd = spark.sparkContext.parallelize(date_range)

df = spark.createDataFrame(data=rdd, schema=schema)

df.agg(F.max("date")).show()

df.summary().show()
+-------+
|summary|
+-------+
|  count|
|   mean|
| stddev|
|    min|
|    25%|
|    50%|
|    75%|
|    max|
+-------+

Would be nice to include these as well

Signed-off-by: Fokko Driesprong <fokko@apache.org>
    @Fokko
    Fokko committed Jun 7, 2020
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  2. Add a test

    @Fokko
    Fokko committed Jun 7, 2020
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