带条件拆分的SSIS检查日期格式

Question

I have a flat file that with a "date" column. The problem is that date could come in as

01-Jan-16 or

01Jan2016

If I run this in a derived column

(DT_DBDATE)(SUBSTRING(bene_dob,1,2) + "-" + SUBSTRING(bene_dob,3,3) + "-" + SUBSTRING(bene_dob,7,4))

it handles the second date fine, but really screws up the first date.

I'm trying to deal with this thru a conditional split, but I'm not sure how to proceed.

How do I verify that date format in a conditional split?

Or if you have an alternative suggestion, I'm open to ideas.

Thanks

Answer 1

一种快速而肮脏的方法是对日期列进行规范化 ，因此将其除去不需要的字符（在这种情况下为“-”），然后应用派生的列表达式，如下所示：

(DT_DBDATE)(SUBSTRING(REPLACE(bene_dob, "-", ""),1,2) + "-" + SUBSTRING(REPLACE(bene_dob, "-", ""),3,3) + "-" + SUBSTRING(REPLACE(bene_dob, "-", ""),7,4))

Answer 2

Replace the dashes with an empty string before the derived column so that all rows will have the same format (01Jan2016). You'll also need to add the first 2 digits of the year if they are missing.

Or if you really want to use a conditional split, just test for the presence of the hyphen character and split based on whether it is in the string or not.

Answer 3

在进行进一步处理之前，我将所有日期格式转换为相同格式，可以通过sql或sis中的数据转换来完成。