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SSIS - format date

Posted on 2014-04-08
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Last Modified: 2016-02-10
Hi,

I am new to SSIS, I have SQL 2008 and VS 2008

I am trying to import an excel file into SQL, the datatype of the field is DATE, in the excel, the data looks like this

20140804
20130105
20091025

How can I convert it in SSIS during importing process?  thx
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Question by:mcrmg
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LVL 75

Expert Comment

by:Anthony Perkins
ID: 39985758
You should not have to.  It should be implicit.
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LVL 65

Expert Comment

by:Jim Horn
ID: 39985777
>How can I convert it in SSIS during importing process?
I recommend against this.  If something throws an error during a combined import and conversion process, then it's more work for you to figure out what generated the error: the data being imported, or the SSIS conversion.

A more supportable approach would be to import it all as a varchar field into a staging table, then once it's imported successfully perform your conversions, to include a methodology to report a conversion failure, e.g. 20140231 not being a valid date.
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Author Comment

by:mcrmg
ID: 39985880
Once I imported them into a staging table, would you recommend I do the conversions in SQL via query or do it in SSIS?

Also, assume there is only one field I need to convert, eg. from 20120522 to 5/22/2012.

What would you recommend to "correct" all the data type, as your post, initially would be all varchar most likely.  Should I create a new table with correct data type then import data from staging table to this table?  thx
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LVL 65

Accepted Solution

by:
Jim Horn earned 400 total points
ID: 39985913
>would you recommend I do the conversions in SQL via query or do it in SSIS?
Yes, but I'll admit that that's a style preference, so your mileage may vary.
It's easier in T-SQL, plus I can do fancy-schmancy things like incrememt a validation_errors (int) column if anything fails a validation, and add English-sounding messages to a validation_message (varchar(1000)) column, then those can be used as the basis of the 'what failed validation?' T-SQL and messanging.

>Also, assume there is only one field I need to convert
In that case, it would be easy enough to have just one table, with columns your_date varchar(100), and your_date_edited (date), and do the conversion as an UPDATE statement.
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Author Comment

by:mcrmg
ID: 39985928
thank you very much
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LVL 65

Expert Comment

by:Jim Horn
ID: 39985945
Thanks for the grade.  Good luck with your project.  -Jim
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