- use SQL TRIM functions to avoid having '' and ' ' considered as
different values
- use Text::Unaccent to remove accents from columns or rows values when
accessing %table. This is required as MySQL consider as equals two
strings that differ only by their accents when using GROUP BY clause.
- Exclude '' values from the list of columns or rows. Otherwise we could
have a row 'UNKNOWN VALUE' and a row 'NULL' which both have the same
values in their cells.
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
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