Hi all, I have a table containing a lot of data (millions of rows). The structure is like the following example:
(22777420, 'G', 18, '-') (22777421, 'G', 36, '-') (22777422, 'C', 29, '-') (22777423, 'C', 17, '-') (22777424, 'A', 31, '-') (22777425, 'A', 42, '-') (22777426, 'C', 49, '-') (22777305, 'T', 0, '-') (22777306, 'C', 18, '-') (22777307, 'C', 29, '-') (22777308, 'T', 26, '-') (22777309, 'T', 10, '-') (22777310, 'G', 15, '-') (22777311, 'G', 33, '-') The first column contains an integer. Now I'd like to sort my table according to numbers of the first column. Is there a way to perform this action? A second question concerns the iteration over a huge amount of data. For example, given the above table, I would to work on a subset of rows using an iterator in order to avoid memory errors. Is there also here a simple procedure? Thank you very much in advance for any suggestion, Ernesto ------------------------------------------------------------------------------ _______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
