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GREL Date Functions
allen joslin edited this page Jan 26, 2016
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Date functions supported by the OpenRefine Expression Language (GREL)
See also: All GREL functions.
Returns the current time.
Returns o converted to a date object.
All other arguments are optional:
- month_first: set false if the date is formatted with the day before the month.
- formatN: attempt to parse the date using an ordered list of possible formats. See SimpleDateFormat for the syntax.
Examples: You can parse the cells "Nov-09" and "11/09" using
value.toDate('MM/yy','MMM-yy').toString('yyyy-MM')
For a date of the form: "1/4/2012 13:30:00" use GREL function:
toDate(value,"dd/mm/YYYY H:m:s")
When o is a date, format specifies how to format the date.
For dates, returns the difference in given time units.
Returns a date changed by the given amount in the given unit of time. Unit defaults to 'hour'.
For example, if you want to decrement a date by 2 months:
value.inc(-2,'month')
Returns part of a date. Data type returned depends on the unit. Units supported are:
Unit | Date part returned | Returned data type | Example using [date 2014-03-14T05:30:04Z] as value |
---|---|---|---|
years | Year | Number | value.datePart("years") -> 2014 |
year | Year | Number | value.datePart("year") -> 2014 |
months | Month | Number | value.datePart("months") -> 2 |
month | Month | Number | value.datePart("month") -> 2 |
weeks | Week (of the year) | Number | value.datePart("weeks") -> 2 |
week | Week (of the year) | Number | value.datePart("week") -> 3 |
w | Week (of the year) | Number | value.datePart("w") -> 3 |
weekday | Day of the week | String | value.datePart("weekday") -> Friday |
hours | Hour | Number | value.datePart("hours") -> 5 |
hour | Hour | Number | value.datePart("hour") -> 5 |
h | Hour | Number | value.datePart("h") -> 5 |
minutes | Minute | Number | value.datePart("minutes") -> 30 |
minute | Minute | Number | value.datePart("minute") -> 30 |
min | Minute | Number | value.datePart("min") -> 30 |
seconds | Seconds | Number | value.datePart("seconds") -> 04 |
sec | Seconds | Number | value.datePart("sec") -> 04 |
s | Seconds | Number | value.datePart("s") -> 04 |
milliseconds | Millseconds | Number | value.datePart("milliseconds") -> 0 |
ms | Millseconds | Number | value.datePart("ms") -> 0 |
S | Millseconds | Number | value.datePart("S") -> 0 |
time | Date expressed as milliseconds since the Unix Epoch | Number | value.datePart("time") -> 1394775004000 |