date

问题 I am using dplyr and lubridate. I am using read_excel to export a data.frame into R from excel. In Excel, I have a column that consists of mdy_hms AM or PM. In R, my code consists of: df$dateTimeEtc And this prints out as an example: "2017-03-07 11:10:37 UTC" "2017-03-22 10:04:42 UTC" "2017-03-08 09:36:49 UTC" However, I have tried to use: df <- df %>% mutate(dateTimeEtc = mdy_hms(dateTimeEtc)) So that R recognizes these data points in a mdy_hms (not sure what to do to include the AM/PM)

问题 I'm getting strange formatting issue when adding months to a LocalDate. Here is the Scala code and output: val virtualToday: LocalDate = LocalDate.parse("2015-01-01") val eightDaysFromToday: LocalDate = virtualToday.plusDays(8) val sixMonthsFromToday: LocalDate = virtualToday.plusMonths(6) println("virtualToday " + virtualToday) println("eightDaysFromToday " + eightDaysFromToday) println("sixMonthsFromToday " + sixMonthsFromToday) println( "virtualToday with formatting " + virtualToday

问题 I have a csv file consisting of last 3 years of timeseries monthly data. Based on today's date, I would like to read only the previous 2 years of data for forecasting the future. Data file example (has data from 01-01-15 to 31-10-19): Date,Value 01-01-17,2 01-02-17,5 01-03-17,8 01-04-17,4 01-05-17,2 01-06-17,9 01-07-17,8 01-08-17,7 01-09-17,5 01-10-17,1 01-11-17,2 01-12-17,3 01-01-18,5 01-02-18,6 01-03-18,8 01-04-18,2 01-05-18,5 01-06-18,6 Desired result: If today's date is 01/01/19, I want

问题 I have a csv file consisting of last 3 years of timeseries monthly data. Based on today's date, I would like to read only the previous 2 years of data for forecasting the future. Data file example (has data from 01-01-15 to 31-10-19): Date,Value 01-01-17,2 01-02-17,5 01-03-17,8 01-04-17,4 01-05-17,2 01-06-17,9 01-07-17,8 01-08-17,7 01-09-17,5 01-10-17,1 01-11-17,2 01-12-17,3 01-01-18,5 01-02-18,6 01-03-18,8 01-04-18,2 01-05-18,5 01-06-18,6 Desired result: If today's date is 01/01/19, I want

问题 I am using jpa 3.o with Hibernate. I have one named query: SELECT COUNT(wt.id) FROM WPSTransaction wt WHERE wt.createdDate>= CURRENT_DATE WPSTransaction is my entity class and createdDate is one of the columns in my class. It's working fine in the Mysql Database. However, I'm moving to SQL Server 2012 and SQL server doesn't seem to compile the CURRENT_DATE value. I've tried GETNOW() and NOW() methods as well as current_date() method and CURRENT_TIMESTAMP without any luck. 回答1: MS SQL Server

问题 This question already has answers here : want current date and time in “dd/MM/yyyy HH:mm:ss.SS” format (10 answers) display Java.util.Date in a specific format (10 answers) Closed 7 months ago . I get Date as java.util.Date(not String) : (java.util.Date) Mon Jul 13 00:00:00 IST 2020 I want to convert it to : 2020-07-13T00:00 format==>("yyyy-MM-dd'T'HH:mm") but as DATE not String. I tried following code: Date scheduleDate=details.getScheduledDate(); // This value is fetched from object passed-

问题 I have searched, but all results didn't help me to understand. I need to select names of people who are 18-23 years old. So my try was: WHERE ((People.Birth) Between (Now()-Year(18)) And (Now()-Year(23))) What I'm doing wrong? Solution as #some_date# is a bad idea! 回答1: For a true solution, you need to use DateAdd and a function like this: Public Function AgeSimple( _ ByVal datDateOfBirth As Date) _ As Integer ' Returns the difference in full years from datDateOfBirth to current date. ' '

问题 I have searched, but all results didn't help me to understand. I need to select names of people who are 18-23 years old. So my try was: WHERE ((People.Birth) Between (Now()-Year(18)) And (Now()-Year(23))) What I'm doing wrong? Solution as #some_date# is a bad idea! 回答1: For a true solution, you need to use DateAdd and a function like this: Public Function AgeSimple( _ ByVal datDateOfBirth As Date) _ As Integer ' Returns the difference in full years from datDateOfBirth to current date. ' '

问题 I have searched, but all results didn't help me to understand. I need to select names of people who are 18-23 years old. So my try was: WHERE ((People.Birth) Between (Now()-Year(18)) And (Now()-Year(23))) What I'm doing wrong? Solution as #some_date# is a bad idea! 回答1: For a true solution, you need to use DateAdd and a function like this: Public Function AgeSimple( _ ByVal datDateOfBirth As Date) _ As Integer ' Returns the difference in full years from datDateOfBirth to current date. ' '

问题 I have an text input box which needs to be validated. The user should be only able to enter the date in dd-Mmm-yyyy format. ex: 01-Jun-2013, 31-Aug-2015 and so on. Or they should be able to enter T+1, T+2,...T+99. What kind of a regex pattern I could use to validate both of these. I think for validating the dd-Mmnm-yyyy, the following regex works: ^(([0-9])|([0-2][0-9])|([3][0-1]))\-(Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)\-\d{4}$ Please help me with this! Update: I just need the