Ability to skip columns

[akariv]

e.g. I have this file:

Totals:	Department	Amount
	Sales	1,000,000
	Marketing	2,500,000

I want to get a stream that fetches only columns 2 & 3. If I use post_parse I can remove the first value but but the stream's headers property will still list the 'Totals:' column.

How can it be done?

[stale]

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[roll]

Updated to "Ability to skip columns" feature.