windows - What does %date:~-4,4%%date:~-10,2%%date:~-7,2%_%time:~0,2% . . . The above command line defines an environment variable with name fileName starting with fixed string db_, appending with %date:~-4,4% the last four characters of the current locale date which is obviously the year, appending with %date:~-10,2% the tenth and ninth characters from right side of the current locale date which is most likely the month,
DATE - Google Docs Editors Help DATE will silently recalculate numeric dates which fall outside of valid month or day ranges For example, DATE(1969,13,1), which specifies the illegal month 13, will create a date of 1 1 1970
日历月历