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[SPARK-22049][DOCS] Confusing behavior of from_utc_timestamp and to_utc_timestamp #19276

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[SPARK-22049][DOCS] Confusing behavior of from_utc_timestamp and to_utc_timestamp #19276

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3ff334a
Clarify behavior of to_utc_timestamp/from_utc_timestamp with an example
srowen Sep 19, 2017
fc10be8
Fix line lengths
srowen Sep 19, 2017
87874b6
Fix Python line length
srowen Sep 19, 2017
d81acdc
Fix R docs
srowen Sep 20, 2017
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Fix Python line length
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@srowen
srowen committed Sep 19, 2017
commit 87874b6d44731158ae82d432e65946809332c5f4
10 changes: 6 additions & 4 deletions python/pyspark/sql/functions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1150,8 +1150,9 @@ def unix_timestamp(timestamp=None, format='yyyy-MM-dd HH:mm:ss'):
@since(1.5)
def from_utc_timestamp(timestamp, tz):
"""
Given a timestamp like '2017-07-14 02:40:00.0', interprets it as a time in UTC, and renders that time as a
timestamp in the given time zone. For example, 'GMT+1' would yield '2017-07-14 03:40:00.0'.
Given a timestamp like '2017-07-14 02:40:00.0', interprets it as a time in UTC, and renders
that time as a timestamp in the given time zone. For example, 'GMT+1' would yield
'2017-07-14 03:40:00.0'.

>>> df = spark.createDataFrame([('1997-02-28 10:30:00',)], ['t'])
>>> df.select(from_utc_timestamp(df.t, "PST").alias('local_time')).collect()
Expand All @@ -1164,8 +1165,9 @@ def from_utc_timestamp(timestamp, tz):
@since(1.5)
def to_utc_timestamp(timestamp, tz):
"""
Given a timestamp like '2017-07-14 02:40:00.0', interprets it as a time in the given time zone, and renders
that time as a timestamp in UTC. For example, 'GMT+1' would yield '2017-07-14 01:40:00.0'.
Given a timestamp like '2017-07-14 02:40:00.0', interprets it as a time in the given time
zone, and renders that time as a timestamp in UTC. For example, 'GMT+1' would yield
'2017-07-14 01:40:00.0'.

>>> df = spark.createDataFrame([('1997-02-28 10:30:00',)], ['ts'])
>>> df.select(to_utc_timestamp(df.ts, "PST").alias('utc_time')).collect()
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