Keep getting informatica function error invalid string for converting to Date

Question

I am trying to convert a nvarchar into a date, but I keep getting this error below

TT_11132 Transformation [Expression] had an error evaluating output column [Run_Date1]. Error message is [<> [TO_DATE]: invalid string for converting to Date ... t:TO_DATE(u:'20190304',u:'MM/DD/YYYY HH24:MI:SS')].

but my function doesn't include a 'MM/DD/YYYY HH24:MI:SS'. Here is my function for reference.

TO_DATE(TO_CHAR(to_date(RUN_DATE),'mmddyyyy'),'mm/dd/yyyy')

Please Help

Thank you

Answer 1

Samik is right, just use the TO_DATE(RUN_DATE, 'YYYYMMDD')

What I'd like to add is some explanation why your function is wrong. So stripping it from innermost:

to_date(RUN_DATE)

Converts the RUN_DATE string to a DATE trying to guess the format as it has not been given. Let's call the result of it as NewDate and analyze further:

TO_CHAR(NewDate,'mmddyyyy')

Now this will convert NewDate to a string in the mmddyyyy format. Let's call this one as NewString_MMDDYYYY and see where it gets us. This leaves the final function as:

TO_DATE(NewString_MMDDYYYY,'mm/dd/yyyy')

See the error yet? You tell Informatica to convert NewString_MMDDYYYY to a date. And you tell the function that it is written in the mm/dd/yyyy format - which obviously is not being used, as the TO_CHAR function was told to store it in mmddyyyy .

So, if your input RUN_DATE is in YYYYMMDD format, then all you need to do is TO_DATE(RUN_DATE, 'YYYYMMDD') . If another formati is used by RUN_DATE , just replace the second argument accordingly.

Answer 2

仅用TO_DATE(RUN_DATE, 'YYYYMMDD')替换所有内容