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https://issues.apache.org/jira/browse/CSV-166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15718672#comment-15718672
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Gary Gregory commented on CSV-166:
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Like the user reports, this is a gold-plating feature. It would a little less 
memory since each record only has the requested values. Yes, of course, you 
have to stream the whole thing. We could stream faster maybe if the columns are 
fixed size. But we do not have an allowance for that... another feature ;-)

> Read CSV file column by column
> ------------------------------
>
>                 Key: CSV-166
>                 URL: https://issues.apache.org/jira/browse/CSV-166
>             Project: Commons CSV
>          Issue Type: Improvement
>            Reporter: Carlos Gavidia
>            Priority: Minor
>              Labels: csvparser
>
> It would be nice if the library enables reading the CSV files in a column per 
> column basis. Here's a very popular StackOverflow thread were the issue is 
> discussed:
> http://stackoverflow.com/questions/12169038/read-csv-file-column-by-column



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