MaxGekk commented on a change in pull request #25410: [SPARK-28690][SQL] Add
`date_part` function for timestamps/dates
URL: https://github.com/apache/spark/pull/25410#discussion_r314586539
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/datetimeExpressions.scala
##########
@@ -1963,3 +1963,77 @@ case class Epoch(child: Expression, timeZoneId:
Option[String] = None)
defineCodeGen(ctx, ev, c => s"$dtu.getEpoch($c, $zid)")
}
}
+
+@ExpressionDescription(
+ usage = "_FUNC_(field, source) - Extracts a part of the date/timestamp.",
+ arguments = """
+ Arguments:
+ * field - selects which part of the source should be extracted.
Supported string values are:
+ ["MILLENNIUM", "MILLENNIA", "MIL", "MILS",
+ "CENTURY", "CENTURIES", "C", "CENT",
+ "DECADE", "DECADES", "DEC", "DECS",
+ "YEAR", "Y", "YEARS", "YR", "YRS",
+ "ISOYEAR",
+ "QUARTER", "QTR",
+ "MONTH", "MON", "MONS", "MONTHS",
+ "WEEK", "W", "WEEKS",
+ "DAY", "D", "DAYS",
+ "DAYOFWEEK", "DOW", "ISODOW", "DOY",
+ "HOUR", "H", "HOURS", "HR", "HRS",
+ "MINUTE", "M", "MIN", "MINS", "MINUTES",
+ "SECOND", "S", "SEC", "SECONDS", "SECS",
+ "MILLISECONDS", "MSEC", "MSECS", "MILLISECON", "MSECONDS",
"MS",
+ "MICROSECONDS", "USEC", "USECS", "USECONDS", "MICROSECON",
"US",
+ "EPOCH"]
Review comment:
Sounds good. I will do that.
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