问题
I'm new to SSIS and I'm trying to convert a GetDate() to string "DD-MM-YYYY". This is the expression I've built so far:
(DT_WSTR, 8) DAY( GETDATE()) + "-" + (DT_WSTR, 8) (MONTH(GETDATE()) - 1) + "-" + (DT_WSTR, 8) YEAR(GETDATE())
The problem I've got is Month() converts the Month "23-4-2013" to a single character when I want it in Double character, same as day. How do i make it into a double character no matter what month it is?
回答1:
For SSIS you could go with:
RIGHT("0" + (DT_STR, 2, 1252) DATEPART("dd" , GETDATE()), 2) + "-" + RIGHT("0" + (DT_STR, 2, 1252) DATEPART("mm" , GETDATE()), 2) + "-" + (DT_STR, 4, 1252) DATEPART("yy" , GETDATE())
Expression builder screen:
回答2:
Something simpler than what @Milen proposed but it gives YYYY-MM-DD instead of the DD-MM-YYYY you wanted :
SUBSTRING((DT_STR,30, 1252) GETDATE(), 1, 10)
Expression builder screen:
回答3:
If, like me, you are trying to use GETDATE() within an expression and have the seemingly unreasonable requirement (SSIS/SSDT seems very much a work in progress to me, and not a polished offering) of wanting that date to get inserted into SQL Server as a valid date (type = datetime), then I found this expression to work:
@[User::someVar] = (DT_WSTR,4)YEAR(GETDATE()) + "-" + RIGHT("0" + (DT_WSTR,2)MONTH(GETDATE()), 2) + "-" + RIGHT("0" + (DT_WSTR,2)DAY( GETDATE()), 2) + " " + RIGHT("0" + (DT_WSTR,2)DATEPART("hh", GETDATE()), 2) + ":" + RIGHT("0" + (DT_WSTR,2)DATEPART("mi", GETDATE()), 2) + ":" + RIGHT("0" + (DT_WSTR,2)DATEPART("ss", GETDATE()), 2)
I found this code snippet HERE
回答4:
for the sake of completeness, you could use:
(DT_STR,8, 1252) (YEAR(GetDate()) * 10000 + MONTH(GetDate()) * 100 + DAY(GetDate()))
for YYYYMMDD or
RIGHT("000000" + (DT_STR,8, 1252) (DAY(GetDate()) * 1000000 + MONTH(GetDate()) * 10000 + YEAR(GetDate())), 8)
for DDMMYYYY (without hyphens). If you want / need the date as integer (e.g. for _key-columns in DWHs), just remove the DT_STR / RIGTH function and do just the math.
来源：https://stackoverflow.com/questions/16711349/ssis-expression-convert-date-to-string