如何在pyspark的数据框中的日期范围内添加新行

Question

我在pyspark中有如下数据框

ID  Name    add date from   date end 
1   aaa yyyyyy  20-01-2018  30-01-2018
2   bbb ffffff  02-11-2018  15-11-2018

但希望获得如下所示的输出量

ID  Name    add date from   date end 
1   aaa yyyyyy  20-01-2018  30-01-2018
1   aaa yyyyyy  21-01-2018  30-01-2018
1   aaa yyyyyy  22-01-2018  30-01-2018
1   aaa yyyyyy  23-01-2018  30-01-2018
1   aaa yyyyyy  24-01-2018  30-01-2018
1   aaa yyyyyy  25-01-2018  30-01-2018
1   aaa yyyyyy  26-01-2018  30-01-2018
1   aaa yyyyyy  27-01-2018  30-01-2018
1   aaa yyyyyy  28-01-2018  30-01-2018
1   aaa yyyyyy  29-01-2018  30-01-2018
1   aaa yyyyyy  30-01-2018  30-01-2018
2   bbb ffffff  02-11-2018  15-11-2018
2   bbb ffffff  03-11-2018  15-11-2018
2   bbb ffffff  04-11-2018  15-11-2018
2   bbb ffffff  05-11-2018  15-11-2018
2   bbb ffffff  06-11-2018  15-11-2018
2   bbb ffffff  07-11-2018  15-11-2018
2   bbb ffffff  08-11-2018  15-11-2018
2   bbb ffffff  09-11-2018  15-11-2018
2   bbb ffffff  10-11-2018  15-11-2018
2   bbb ffffff  11-11-2018  15-11-2018
2   bbb ffffff  12-11-2018  15-11-2018
2   bbb ffffff  13-11-2018  15-11-2018
2   bbb ffffff  14-11-2018  15-11-2018
2   bbb ffffff  15-11-2018  15-11-2018

Answer 1

尝试一下：

a = [(1,'aaa','yyyyyy','20-01-2018','30-01-2018'),
     (2,'bbb','ffffff','02-11-2018','15-11-2018')]
df = spark.createDataFrame(a,["ID","Name","add","date_from","date_end"])

df.show()

+---+----+------+----------+----------+
| ID|Name|   add| date_from|  date_end|
+---+----+------+----------+----------+
|  1| aaa|yyyyyy|20-01-2018|30-01-2018|
|  2| bbb|ffffff|02-11-2018|15-11-2018|
+---+----+------+----------+----------+

df.registerTempTable("temp")

result = sqlContext.sql("""
    select t.ID, 
        t.Name, 
        t.add, 
        date_format(date_add(to_date(t.date_from,'dd-MM-yyyy'),pe.i),'dd-MM-yyyy') as date_from, 
        t.date_end 
    from temp t 
    lateral view posexplode(split(space(datediff(to_date(t.date_end,'dd-MM-yyyy'),to_date(t.date_from,'dd-MM-yyyy'))),' ')) pe as i,x
    """)

result.show()

+---+----+------+----------+----------+
| ID|Name|   add| date_from|  date_end|
+---+----+------+----------+----------+
|  1| aaa|yyyyyy|20-01-2018|30-01-2018|
|  1| aaa|yyyyyy|21-01-2018|30-01-2018|
|  1| aaa|yyyyyy|22-01-2018|30-01-2018|
|  1| aaa|yyyyyy|23-01-2018|30-01-2018|
|  1| aaa|yyyyyy|24-01-2018|30-01-2018|
|  1| aaa|yyyyyy|25-01-2018|30-01-2018|
|  1| aaa|yyyyyy|26-01-2018|30-01-2018|
|  1| aaa|yyyyyy|27-01-2018|30-01-2018|
|  1| aaa|yyyyyy|28-01-2018|30-01-2018|
|  1| aaa|yyyyyy|29-01-2018|30-01-2018|
|  1| aaa|yyyyyy|30-01-2018|30-01-2018|
|  2| bbb|ffffff|02-11-2018|15-11-2018|
|  2| bbb|ffffff|03-11-2018|15-11-2018|
|  2| bbb|ffffff|04-11-2018|15-11-2018|
|  2| bbb|ffffff|05-11-2018|15-11-2018|
|  2| bbb|ffffff|06-11-2018|15-11-2018|
|  2| bbb|ffffff|07-11-2018|15-11-2018|
|  2| bbb|ffffff|08-11-2018|15-11-2018|
|  2| bbb|ffffff|09-11-2018|15-11-2018|
|  2| bbb|ffffff|10-11-2018|15-11-2018|
+---+----+------+----------+----------+

希望这会有所帮助

apache-spark pyspark apache-spark-sql