Why am I unable to concatenate four fields in a CSV data source with my current search syntax?

[sajeesh84]

I am trying to concatenate four fields in a CSV data source.
I have tried :

...|eval test=field1.field2.field3.field4| table test

But I am not getting any output.

[lguinn2]

Do all the fields exist? Have you spelled them properly (throughout the entire search string)? If you leave off the table command, what fields do you find the in fields sidebar?

What happens if you enter:

...|eval test=field1.field2.field3.field4| table test field1 field2 field3 field4

Did the base search return any results? Can we see the entire search string?