xuanyuanking commented on a change in pull request #28558:
URL: https://github.com/apache/spark/pull/28558#discussion_r426367390
##########
File path: docs/sql-ref-datetime-pattern.md
##########
@@ -76,6 +76,57 @@ The count of pattern letters determines the format.
- Year: The count of letters determines the minimum field width below which
padding is used. If the count of letters is two, then a reduced two digit form
is used. For printing, this outputs the rightmost two digits. For parsing, this
will parse using the base value of 2000, resulting in a year within the range
2000 to 2099 inclusive. If the count of letters is less than four (but not
two), then the sign is only output for negative years. Otherwise, the sign is
output if the pad width is exceeded when 'G' is not present.
+- Month: If the number of pattern letters is 3 or more, the month is
interpreted as text; otherwise, it is interpreted as a number. The text form is
depend on letters - 'M' denotes the 'standard' form, and 'L' is for
'stand-alone' form. The difference between the 'standard' and 'stand-alone'
forms is trickier to describe as there is no difference in English. However, in
other languages there is a difference in the word used when the text is used
alone, as opposed to in a complete date. For example, the word used for a month
when used alone in a date picker is different to the word used for month in
association with a day and year in a date. Here are examples for all supported
pattern letters:
Review comment:
Do we also need to add an extra official description link for the
'standard' and 'standalone' mode?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org
For additional commands, e-mail: reviews-h...@spark.apache.org
