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# Data Controller for SAS: File Uploads
Files can be uploaded via the Editor interface - first choose the library and table, then click "Upload".
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< img src = "/img/dcu-files1.png" height = "350" style = "border:3px solid black" >
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The following should be considered when uploading data in this way:
- A header row (with variable names) is required
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- Variable names must match the target
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- Duplicate variable names are not permitted
- Missing columns are not permitted
- Additional columns are ignored
- The order of variables does not matter
- The delimiter is extracted from the header row (so for `var1;var2;var3` the delimeter would be assumed to be a semicolon)
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- The above assumes the delimeter is the first special character! so `var,1;var2;var3` would fail
- The following characters should not be used as delimeters: `"' ` (doubleqoute, quote, space)
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When loading dates, be aware that the data controller makes use of the `ANYDTDTE` and `ANYDTDTTME` informats.
This means that uploaded date / datetime values should be unambiguous (eg `01FEB1942` vs `01/02/42` ) to avoid confusion - as the latter could be interpreted as `02JAN2042` depending on your locale and options `YEARCUTOFF` settings.
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!!! tip
To get a copy of a file in the right format for upload, use the [file download ](/dc-userguide/#usage ) feature in the Viewer tab
