i am pulling vertical delimited txt file using ssis to the data warehouse. the date data type fields are being written NULL on the table. they're formatted as ddmmyyyy 11241986. i am using derived column but i am getting the error below.
script:
SUBSTRING([OUTD-OPEN-DATE],1,2) + "/" + SUBSTRING([OUTD-OPEN-DATE],3,2) + "/" + SUBSTRING([OUTD-OPEN-DATE], 5,4)
error message: