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Using boolean charts, I can't directly query for an empty value. For example, if I want to find bugs where the blocks field is empty, I have to use a query like _does not match regexp "."_. I should be able to say _is equal to ""_.
Sam, i did an test and can not find an problems. This is an example of what i use for testing http://mylyn.org/bugs36/buglist.cgi?short_desc_type=allwordssubstr&short_desc=&product=ManualTest&product=Scratch&product=TestProduct&long_desc_type=allwordssubstr&long_desc=&status_whiteboard_type=allwordssubstr&status_whiteboard=&field0-0-0=blocked&type0-0-0=equals&value0-0-0= Did you have some more informations?
Created attachment 204461 [details] query If I do the query shown, I get bug 358554 in the results. I don't think I should get that task because its blocks field is not empty. I also think it would improve clarity if there were an "is empty" option in the boolean charts, but "is equal to" the empty string should work too.
(In reply to comment #2) > Created attachment 204461 [details] > query > > If I do the query shown, I get bug 358554 in the results. I don't think I > should get that task because its blocks field is not empty. I also think it > would improve clarity if there were an "is empty" option in the boolean charts, > but "is equal to" the empty string should work too. If you use the Bugzilla Search Page you get the same result. https://bugs.eclipse.org/bugs/buglist.cgi?query_format=advanced;short_desc=extensible;field0-0-0=blocked;short_desc_type=allwordssubstr;type0-0-0=equals;component=Framework;product=Mylyn%20Tasks Mylyn use https://bugs.eclipse.org/bugs/buglist.cgi?query_format=advanced&short_desc=extensible&field0-0-0=blocked&short_desc_type=allwordssubstr&type0-0-0=equals&value0-0-0=&component=Framework&classification=Mylyn&product=Mylyn%20Tasks but this generate the same result. So I see no way how we can fix this.
I guess this is a limitation of Bugzilla then. Perhaps the search button should be disabled if the value is blank, if it is not meaningful to search for blank values? That might depend on the kind of search being done though (e.g. equal, regexp).
(In reply to comment #4) > I guess this is a limitation of Bugzilla then. Perhaps the search button should > be disabled if the value is blank, if it is not meaningful to search for blank > values? That might depend on the kind of search being done though (e.g. equal, > regexp). OK I can look how we can do this! But I think we should fill an bug against bugzilla to solve this.
Thanks Frank. It looks like this has already been reported against Bugzilla: 345194: Add "is null" and "is not null" search operators to the boolean chart (ability to search for empty and not empty fields) https://bugzilla.mozilla.org/show_bug.cgi?id=345194
