SSIS expression: convert date to string

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