"WHERE date_corrected is NULL or date_corrected < '2011-06-01'"

dataset.filter({:date_corrected => nil} | {:date_corrected <
Date.civil(2011,6,1)})

Gives me "odd number list for Hash"

How can I do this?

On Jul 19, 6:36 am, Michael Lang <mwl...@cybrains.net> wrote:

dataset.filter({:date_corrected => nil} | (:date_corrected <
Date.civil(2011,6,1)))

Note that your code won't work on 1.9.  You need to do this to work on
both 1.8 and 1.9:

dataset.filter{{date_corrected => nil} | (date_corrected <
Date.civil(2011,6,1))}

Also, if the dataset is not already filtered, this is probably
equivalent and would be my recommendation:

dataset.filter(:date_corrected => nil).or{date_corrected <
Date.civil(2011,6,1)}