Datetime Data Type

Cloud Dataprep by TRIFACTA® supports a variety of date-time formats, each of which has additional variations to it.

Supported Date Ranges:

  • Earliest: January 1, 1400
  • Latest: December 31, 2599

You can use dates in the Gregorian calendar system only. Dates in the Julian calendar are not supported.

You can use the following format strings to change the format of a column of dates:

LetterDate or Time ComponentPresentationExamples
MMonth in yearNumber1
MMMonth in yearNumber01
MMMMMonth in yearMonthJanuary
MMMMonth in yearMonthJan
yyYearNumber16
yyyyYearNumber2016
DDay in yearNumber352
dDay in monthNumber9
ddDay in a monthNumber09
EEE Day in week (three-letter abbreviation)TextWed
EEEEDay in weekTextWednesday
h

Hour in day (1-12)

NOTE: Requires an AM/PM indicator (a).

Number2
hh

Hour in am/pm (01-12)

NOTE: Requires an AM/PM indicator (a).

Number02
HHour in day (1-12)Number2
HHHour in day (0-23)Number20
mMinute in an hourNumber9

mm

Minute in an hourNumber09
sSecond in a minuteNumber3
ssSecond in a minuteNumber03
SSS MillisecondNumber218
XTime zoneISO 8601 time zone-08:00
aAM/PM indicatorStringAM

Tip: If your DateTime column contains data in multiple formats, you must change the format of the DateTime column to one format and then add a transform to convert that data to the other format. When all formats of your source date values are converted to a single format, the application should infer the appropriate date and time format.

Supported Separators:

  • Date separators: blank space, comma, single hyphen, or forward slash
  • Time separators: blank space, comma, single hyphen, colon, t or T
  • Non-delimited Datetime values are supported. For example, yyyymmdd, yyyymmddThhmmssX.

ISO 8601 Time Zone Notes:

  • Support for timezone offset from UTC indicated by +hh:mm, +hhmm, or +hh. For example, the date '2013-11-18 11:55-04:00' is recognized as a DateTime value.

  • Datetime part functions (for example, Hour) truncate time zones and return local time.
  • If you have a column with multiple time zones, you can convert the column to Unixtime so you can perform Date/Time operations with a standardized time zone. If you want to work with local times, you can truncate the time zone or use other Datetime functions. See UNIXTIME Function.

For more information on supported date formatting strings, see DATEFORMAT Function.

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Google Cloud Dataprep Documentation