[QGIS-trac] [Quantum GIS] #3111: filtering of shapefile with query builder not working when using 'excluding' query

[Quantum GIS]

#3111: filtering of shapefile with query builder not working when using
'excluding' query
------------------------------------------------+---------------------------
   Reporter:  nirvn                             |              Owner:  jef          
       Type:  bug                               |             Status:  new          
   Priority:  major: does not work as expected  |          Milestone:  Version 1.6.0
  Component:  Vectors                           |            Version:               
   Keywords:                                    |   Platform_version:               
   Platform:  All                               |           Must_fix:  Yes          
Status_info:  0                                 |  
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 Let's say you have 4 polygons in a shapefile

 |-----------------|

 | id | name       |

 +----+------------+

 | 0  | polygon-a  |

 | 1  | polygon-b  |

 | 2  | polygon-c  |

 | 3  | polygon-d  |

 |-----------------|


 If you filter the shapefile using this query:
  id = 1 AND id = 2 AND id = 3

 QGIS will properly display only the polygons with id 1, 2 and 3.

 However, if you filter the shapefile using this query:
  id != 0

 QGIS will fail to eliminate polygon with id 0.

 The problem started to occur 2 days ago.

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Ticket URL: <https://trac.osgeo.org/qgis/ticket/3111>
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